Optimization Guide

Shopify RC LiPo Battery Schema — Cell Count S Rating, XT60 vs EC5 Connector Incompatibility, LiPo vs LiHV Overcharge Fire Risk, C-Rating Discharge Current, Capacity and Weight Trade-off

Q: What happens if I use a 4S LiPo on a 3S ESC?

Using a 4S pack (14.8V nominal) on an ESC rated for 3S (maximum 12.6V fully charged) results in immediate ESC destruction the moment current flows. ESCs contain MOSFETs rated for a maximum voltage — typically 30V for 3S, 40–60V for 4S, 60–80V for 6S. When 4S voltage (up to 16.8V fully charged) is applied to a 3S ESC, it either triggers an overvoltage shutdown instantly, or more commonly with lower-quality ESCs, the MOSFETs fail catastrophically, often with visible burning or an audible pop. There is no warning — the ESC is simply destroyed. Similarly, a motor rated for 3S at high Kv (2300–3000 Kv) running on 4S will spin at roughly 35% higher RPM. If the motor is already at its maximum RPM or thermal limit on 3S, it will overheat and fail on 4S, or the propeller will generate forces beyond its structural rating and shatter. The S cell count is a hard compatibility gate that must be validated before any other recommendation. Encode lipo.cell_count_s as an integer and match it against esc.max_cell_count_s and motor.recommended_cell_count_s in AI agent compatibility checks.

Q: Can I use an XT30 connector on a battery in place of XT60?

No. XT30 and XT60 connectors are physically incompatible — the XT30 male plug will not insert into an XT60 female socket and vice versa, despite using the same gold bullet pin design at different diameters (2mm bullets in XT30, 4mm bullets in XT60). Beyond physical incompatibility: XT30 is rated for 30A continuous and should not be used with packs whose C-rating × capacity exceeds 30A. A 1500mAh 50C pack can deliver 75A continuous — using an XT30 would cause the connector to overheat and potentially arc or melt. The XT60 handles 60A continuous. XT90 handles 90A and uses 5mm bullets — also physically incompatible with XT60. EC5 uses circular 5mm bullets in a square housing — also incompatible with XT60, EC3, or Deans despite visually similar housings. Deans T-plug uses flat blade contacts and is incompatible with all bullet-type connectors. The connector type is the most common cause of returns for LiPo batteries because buyers assume they can simply swap packs between different RC vehicles. Encode lipo.connector_type as a controlled vocabulary string and surface it as a mandatory compatibility filter.

Q: What is the difference between LiPo and LiHV chemistry and why does it matter for charging?

Standard LiPo (Lithium Polymer) cells have a nominal voltage of 3.7V per cell, charge to a maximum safe voltage of 4.20V per cell, and should be stored at 3.80–3.85V per cell. LiHV (High Voltage LiPo, sometimes labeled HV or LiPo HV) cells have a nominal voltage of 3.85V per cell and charge to a maximum safe voltage of 4.35V per cell. The connectors — main power and balance — are physically identical between LiPo and LiHV. The difference is entirely in the cell chemistry. The danger: if you charge a standard LiPo battery on a LiHV charging profile, the charger will push each cell to 4.35V — 0.15V over the safe maximum. This overcharges the cells, causing the electrolyte to decompose and generate heat rapidly — a process called thermal runaway. Thermal runaway in a LiPo produces intense heat exceeding 400°C, releases flammable gases, and causes fire or explosion. LiPo fires are a class D metal fire and cannot be extinguished with water (water causes hydrogen gas release) or a standard CO2 or dry chemical fire extinguisher. Conversely, charging a LiHV battery on a standard LiPo profile (4.20V/cell) is safe but leaves the pack at approximately 97% of its potential capacity — the pack underperforms but is not damaged. Encode lipo.chemistry as 'LiPo' or 'LiHV' and include a legalDisclaimer noting the fire risk of chemistry mismatch.

Q: How reliable are C-rating claims on LiPo batteries?

C-ratings on LiPo batteries are manufacturer claims and are not independently verified or governed by a standardized test procedure. Marketing inflation of 30–50% is common in the budget segment. A budget pack labeled 100C may perform worse than a reputable brand's 35C pack from a known manufacturer like Tattu, CNHL, or Gens ace. The most reliable objective proxy for a LiPo's actual power delivery capability is internal resistance (IR) measured in milliohms (mΩ) per cell. IR is measured with an impedance meter or a capable charger. Lower IR means less voltage sag under load and better power delivery. As a practical guide: IR below 5 mΩ per cell indicates a high-performance racing pack; below 15 mΩ per cell is good for most FPV and RC use; above 20 mΩ per cell indicates an aged or lower-quality cell. IR also increases as cells age and as a result of abuse (over-discharge, over-temperature). A pack with rising IR will show increased voltage sag under load — the quad's flight controller may trigger low-voltage protection mid-flight and the quad will drop from altitude. Encode lipo.c_rating_continuous and lipo.c_rating_burst as integers with a disclaimer that values are manufacturer claims. Where available, include internal_resistance_mohm_per_cell as the more reliable metric.

Q: What is the relationship between LiPo capacity (mAh), weight, and flight time?

In FPV quad design, battery weight is typically 25–35% of all-up-weight (AUW). Increasing capacity increases both stored energy (longer potential flight time) and weight (which requires more thrust to maintain altitude, consuming more energy to compensate). The relationship is non-linear: going from a 1500mAh to an 1800mAh 4S pack (assuming same C-rating and format) adds approximately 30–40 grams. On a 5-inch freestyle quad with an AUW of 350g, that's roughly a 10% weight increase. The result: approximately 8–10% more flight time from the extra capacity, offset by 8–10% more power draw from the extra weight. Net flight time gain is small — typically 3–7% in real-world testing. The real impact is on performance: the heavier quad accelerates more slowly, has a lower thrust-to-weight ratio, and feels 'sluggish' compared to the lighter pack. For racing (where every gram of performance matters), pilots prefer the lightest pack that provides enough flight time (typically 3–4 minutes). For long-range cruising or aerial photography, a heavier pack may be acceptable. AI agents must encode both lipo.capacity_mah and lipo.weight_g and present both values for weight-limited applications — capacity without weight is insufficient information for drone builds.

An AI agent recommending a "4S 1500mAh LiPo" to a buyer with a 3S ESC causes immediate ESC burnout the moment current flows. Encoding lipo.cell_count_s, connector_type, chemistry, and c_rating_continuous enables AI agents to gate on hard compatibility constraints and prevent equipment damage — or worse, charging fires.

TL;DR Cell count S is a hard gate: 4S pack on 3S ESC = instant ESC burnout. XT60, XT30, XT90, EC5, EC3, and Deans connectors are physically incompatible — the most common return cause. LiPo charges to 4.20V/cell, LiHV to 4.35V/cell — charging LiPo on LiHV profile causes thermal runaway fire. C-ratings are unverified marketing claims; internal resistance in mΩ/cell is the reliable proxy. Encode lipo.cell_count_s, connector_type, chemistry, c_rating_continuous, capacity_mah, and weight_g.

Cell Count (S Rating): The Single Most Critical Compatibility Field

LiPo (Lithium Polymer) cells have a nominal voltage of 3.7V each. Multiple cells are connected in series (denoted S) to produce higher pack voltages. The S count determines whether a battery is electrically compatible with a given ESC and motor — it is a hard gate, not a preference.

S Rating to Pack Voltage

S Rating	Nominal Voltage	Full Charge (4.20V/cell)	Storage (3.85V/cell)	Minimum Safe (3.0V/cell)
1S	3.7V	4.2V	3.85V	3.0V
2S	7.4V	8.4V	7.7V	6.0V
3S	11.1V	12.6V	11.55V	9.0V
4S	14.8V	16.8V	15.4V	12.0V
5S	18.5V	21.0V	19.25V	15.0V
6S	22.2V	25.2V	23.1V	18.0V

S Rating vs ESC and Motor Compatibility

The ESC (Electronic Speed Controller) has a maximum voltage rating determined by its MOSFETs. Running a pack whose fully-charged voltage exceeds this rating destroys the ESC instantly — the MOSFETs fail catastrophically. A 3S ESC is typically rated for up to 12.6V; a 4S fully charged delivers 16.8V. At the moment current flows, the ESC dies. There is no gradual failure mode, no warning light. This is the most destructive compatibility error in RC and FPV.

Motor Kv (RPM per volt) must also match the operating voltage. Running a high-Kv motor on excessive voltage produces RPM beyond the motor's design limit, overheating the windings and potentially shattering the propeller under centrifugal force:

Application	Typical Motor Kv	Recommended S Count	Notes
Micro 1S–2S whoops (65–75mm)	15,000–25,000 Kv	1S–2S	JST-PH or XT30 connectors; tiny packs
2S–3S micro/mini quads (2–3 inch)	3,000–8,000 Kv	2S–3S	XT30 connector common; light builds
5-inch FPV racing quad	2300–2700 Kv	4S	XT60 standard; 1300–1500mAh typical
5-inch FPV freestyle quad	1700–2200 Kv	4S–6S	XT60 standard; 1500–1800mAh typical
7-inch long-range / freestyle	1200–1600 Kv	4S–6S	XT60 or XT90; larger packs 2000–3000mAh
1/10 scale RC car	3,000–4,500 Kv	2S–3S	XT60 or Deans; 3000–5000mAh
1/8 scale RC car / truck	1,800–2,500 Kv	3S–4S	EC5 or XT90; 4000–6000mAh
Large RC boat	600–1,200 Kv	4S–6S	XT90 or EC5; high-capacity packs

Encode lipo.cell_count_s as an integer. This single field is the mandatory first filter in any AI compatibility recommendation for RC or FPV products — it must be validated before connector type, capacity, or C-rating.

Connector Type: Physical Incompatibility and the Most-Returned Field

LiPo battery connector types are not interchangeable. Each is a distinct physical standard — different pin diameters, housing shapes, locking mechanisms, or contact geometries. An agent recommending any LiPo without validating connector type against the vehicle or charger connector will generate returns at a high rate.

Connector	Continuous Rating	Pin Type	Common Applications	Interchangeable With
XT60	60A	4mm gold bullet, yellow housing	3S–6S FPV drones, 1/10–1/8 RC cars, most hobby packs above 1000mAh	Nothing — XT60 male fits only XT60 female
XT30	30A	2mm gold bullet, yellow housing	1S–2S micro builds, small receivers, packs under ~600mAh	Nothing — smaller bullet than XT60
XT90	90A	5mm gold bullet, black housing	Large RC vehicles, boats, high-draw applications	Nothing — larger bullet than XT60
EC5	120A	5mm circular bullet, square housing	DJI Agras drones, large Spektrum/Dynamite packs, Traxxas X-Maxx	Nothing — housing incompatible with XT90 despite same bullet diameter
EC3	60A	3mm circular bullet, square housing	Older Horizon Hobby vehicles, mid-size Spektrum packs	Nothing — different pin size than EC5; housing shape similar but not mating
Deans (T-Plug)	50A	Flat blade contacts, T-shaped housing	Legacy Traxxas vehicles, older RC cars, budget foam planes	Nothing — flat blade geometry incompatible with all bullet connectors
JST-PH 2.0mm	2–3A	1.25mm pitch JST	1S micro whoop packs, small receivers — not suitable as main power above 1S	Not a high-current connector

Balance Connector: Not a Power Connector

Every LiPo pack above 1S has a separate balance connector — a small white JST-XH plug used by balancing chargers to monitor and equalize individual cell voltages during charging. The pin count is cell count + 1 (one wire per cell junction plus one ground). Balance connectors are NOT interchangeable with main power connectors and carry only milliamps during balancing — they cannot power a vehicle.

Cell Count	Balance Connector Pins	Balance Connector Type
2S	3 pins	JST-XH 2.54mm, 3-pin
3S	4 pins	JST-XH 2.54mm, 4-pin
4S	5 pins	JST-XH 2.54mm, 5-pin
5S	6 pins	JST-XH 2.54mm, 6-pin
6S	7 pins	JST-XH 2.54mm, 7-pin

Encode lipo.connector_type as a controlled vocabulary string (XT60 / XT30 / XT90 / EC5 / EC3 / Deans / JST-PH) and lipo.balance_connector_pins as an integer. Surface connector_type as a mandatory filter field — buyers cannot use a battery with the wrong connector without soldering, which invalidates the return and may void product liability.

C-Rating: Discharge Rate and Marketing Inflation

C-rating specifies the multiple of the pack's capacity that it can safely discharge continuously. A 50C rating on a 2200mAh (2.2Ah) pack means a maximum continuous discharge of 50 × 2.2 = 110A. Burst C-rating (typically 2× continuous, sustained for approximately 10 seconds) defines the peak current the pack can handle for short intervals such as full-throttle acceleration.

Matching C-Rating to Application Current Draw

Application	Typical Full-Throttle Draw	Minimum Pack C-Rating (at capacity)	Example
FPV racing quad (5-inch)	60–80A	1500mAh: 40–54C minimum; 1800mAh: 33–44C	1500mAh 50C = 75A ✓ for 60A draw
FPV freestyle quad (5-inch)	40–60A	1500mAh: 27–40C; 1800mAh: 22–33C	1800mAh 35C = 63A ✓ for 55A draw
1/10 RC car (brushless)	50–80A peak	3000mAh: 17–27C; 5000mAh: 10–16C	5000mAh 25C = 125A ✓ for 80A peak
1/8 RC car / truck	80–150A peak	4000mAh: 20–38C; 6000mAh: 13–25C	6000mAh 30C = 180A ✓ for 150A peak
Large RC boat	100–200A peak	Requires high-capacity high-C packs or 2P configuration	5000mAh 40C = 200A at burst limit

C-Rating Inflation and Internal Resistance as a Reliable Proxy

C-ratings are not governed by a standardized independent test. Budget manufacturers commonly inflate ratings by 30–50%. A pack labeled "100C" from an unknown brand may perform below a reputable brand's "35C" under real-world load. The most reliable objective measure of a LiPo's actual power delivery is its internal resistance (IR) in milliohms (mΩ) per cell, measured by a capable charger or impedance meter:

IR per Cell	Performance Tier	Suitable For
<5 mΩ/cell	Competition grade	FPV racing, maximum performance builds
5–15 mΩ/cell	Enthusiast grade	FPV freestyle, fast RC cars, demanding applications
15–25 mΩ/cell	Standard grade	General flying, casual RC use, training packs
>25 mΩ/cell	Degraded / budget	Significant voltage sag under load; not suitable for high-draw applications

Under-C-rated packs (where actual deliverable current is less than the application demands) cause voltage sag — the pack voltage drops sharply under load. In an FPV quad, severe sag triggers the flight controller's low-voltage failsafe: the quad descends automatically or drops throttle, potentially falling from altitude. In an RC car, sag causes the ESC to detect undervoltage and cut motor power mid-run.

Encode lipo.c_rating_continuous and lipo.c_rating_burst as integers. Add a note in the product description that C-ratings are manufacturer claims not independently verified. Where available, include lipo.internal_resistance_mohm_per_cell as the authoritative performance indicator.

LiPo vs LiHV Chemistry: Same Connector, Different Maximum Voltage

Standard LiPo and LiHV (High Voltage LiPo) batteries use identical main power and balance connectors. The chemistry difference is invisible without reading the label — but the consequence of mixing them on a charger is severe.

Chemistry	Nominal V/cell	Max Charge V/cell	Storage V/cell	Min Safe V/cell
LiPo (standard)	3.7V	4.20V	3.80–3.85V	3.0V (3.5V recommended)
LiHV (high voltage)	3.85V	4.35V	3.85–3.90V	3.0V (3.5V recommended)

Cross-Chemistry Charging Consequences

LiPo charged on LiHV profile (4.35V/cell): This overcharges the standard LiPo cells by 0.15V per cell. A 4S pack is overcharged to 17.4V instead of the safe maximum 16.8V. The electrolyte decomposes, generating heat. If the pack is being observed it may puff visibly; if unattended it may reach thermal runaway — producing temperatures exceeding 400°C, releasing flammable gas, and causing fire or explosion. LiPo fires cannot be extinguished with water or standard ABC/CO2 extinguishers. Charging in a LiPo-safe fireproof bag on a fireproof surface is standard safety practice for exactly this reason.

LiHV charged on standard LiPo profile (4.20V/cell): The pack charges to only 4.20V per cell instead of the designed 4.35V. The pack is safe but performs at approximately 97% of its intended capacity — this is annoying but not dangerous. The cell is not damaged.

LiHV packs are increasingly common in FPV racing and micro quad applications where the extra 0.15V per cell (0.6V total on 4S) provides a meaningful power edge. The voltage advantage of LiHV over LiPo on a 4S pack: 17.4V vs 16.8V fully charged — a 3.6% higher motor RPM at full charge.

Encode lipo.chemistry as the string 'LiPo' or 'LiHV'. Include this in the legalDisclaimer property of the product's JSON-LD with explicit text noting the charging profile requirement. An AI agent matching a battery to a charger must validate lipo.chemistry against charger.supported_chemistry.

Capacity (mAh), Weight, and the Flight Time Trade-off

LiPo capacity in milliamp-hours (mAh) determines how much energy the pack stores. Higher mAh means more energy available for flight, but also more weight. In battery-powered aircraft and drones, the relationship between capacity and performance is a fundamental design trade-off.

Weight as a Percentage of All-Up-Weight

In FPV drone design, battery weight is typically 25–35% of all-up-weight (AUW). A 5-inch freestyle quad with an AUW of 600g might carry a 4S 1800mAh pack weighing 165g (27.5% of AUW). Exceeding this ratio degrades thrust-to-weight ratio and reduces both performance and efficiency.

Pack	Typical Weight	vs 1500mAh Baseline	Flight Time Gain (5-inch quad)	Performance Impact
4S 1300mAh XT60	~118g	−22g lighter	−10–12% shorter	+8–10% better performance, racing preference
4S 1500mAh XT60	~140g	Baseline	Baseline	Standard freestyle/racing balance
4S 1800mAh XT60	~165g	+25g heavier	+8–10% longer	−8–10% reduced performance, cruising preference
4S 2200mAh XT60	~195g	+55g heavier	+15–18% longer	−15% reduced performance; heavy freestyle use
4S 1500mAh 2P (4S2P 3000mAh)	~280g	+140g heavier	+90–100% longer	Significantly heavier; different form factor, not a drop-in swap

Encode both lipo.capacity_mah as an integer and lipo.weight_g as an integer. For weight-limited applications (competitive racing, long-range where every gram affects endurance), both fields are required. An AI agent recommending a LiPo based only on mAh without weight will cause performance surprises when the builder discovers the heavier pack.

Parallel Configuration (P Notation) and Form Factor

LiPo packs can also have cells in parallel within each series group. A 4S2P pack has 4 voltage-determining series groups, each made of 2 cells in parallel. The parallel cells double capacity and halve internal resistance at the same voltage — but also double the weight and create a larger physical form factor.

P Notation Effects

Capacity: multiplied by P. A 4S2P 5000mAh is functionally two 4S 2500mAh packs connected in parallel.
Internal resistance: halved per P doubling — a 4S2P pack delivers current more easily and sags less under heavy loads.
Weight: multiplied by P. A 4S2P pack weighs roughly twice a 4S1P of the same per-string capacity.
Form factor: a 4S2P pack is physically larger than a 4S1P pack with the same total mAh — it is not a drop-in replacement for two separate packs even if the total mAh and S count match.

Encode lipo.parallel_p as an integer (default 1 for single-string packs). Combined with lipo.dimensions_mm (length × width × height in mm), this allows AI agents to verify physical fit in battery bays where form factor is constrained — common in sub-250g drones, race-class quads, and RC car chassis with fixed battery compartments.

Safe Handling: Storage Voltage, Discharge Limits, and Fire Safety

LiPo batteries require specific handling procedures to maintain cell health and prevent fire. These are product safety requirements, not preferences, and should be encoded in product data for customer communication and legal compliance.

Discharge Limits

The absolute minimum safe discharge voltage is 3.0V per cell. Below this threshold, the lithium chemistry undergoes irreversible damage — internal copper dissolution creates dendrites that can eventually cause an internal short circuit. A pack discharged to 2.0V/cell is likely internally compromised and may short circuit spontaneously on the next charge. The recommended minimum in practice is 3.5V per cell — most FPV flight controllers are configured to trigger low-voltage warnings at 3.5V/cell and cut motor power at 3.3–3.4V/cell. Flying to absolute cutoff (3.0V/cell) ages cells rapidly.

Storage Voltage

Storing a LiPo pack fully charged (4.20V/cell) or fully depleted (<3.5V/cell) for more than 2–3 days accelerates cell degradation. The correct storage voltage is 3.80–3.85V per cell — most quality chargers have a "Storage Charge" mode that automatically brings the pack to this voltage from either direction. A 4S pack at storage voltage reads approximately 15.2–15.4V total. A pack left fully charged for weeks loses measurable capacity; a pack left discharged can be damaged beyond recovery.

LiPo Fire Safety

Thermal runaway is caused by: overcharging (most common with wrong chemistry profile), over-discharging, physical puncture of cells, crush damage, or manufacturing defect. Once initiated, thermal runaway is self-sustaining — the exothermic reaction generates more heat than it needs to continue. LiPo fires reach temperatures of 300–500°C, release flammable hydrogen fluoride gas, and cannot be extinguished with water (water reacts with lithium to produce hydrogen gas) or standard CO2 or dry chemical extinguishers (which lack the thermal mass to absorb the energy of a LiPo fire). The correct response to a LiPo fire is containment — a fireproof LiPo-safe bag, a metal container, or moving the battery outdoors away from structure.

Encode lipo.storage_voltage_v_per_cell as 3.85 (a numeric field), lipo.discharge_cutoff_v_per_cell as 3.5 (recommended) or 3.0 (absolute), and include in the product's JSON-LD legalDisclaimer property a statement on fire safety and correct charger chemistry selection.

Metafield Schema: lipo.*

Metafield	Type	Example	Notes
`lipo.cell_count_s`	number_integer	4	Series cell count; hard ESC and motor compatibility gate
`lipo.capacity_mah`	number_integer	1500	Capacity in milliamp-hours
`lipo.c_rating_continuous`	number_integer	100	Continuous C-rating; manufacturer claim, not independently verified
`lipo.c_rating_burst`	number_integer	200	Burst C-rating; typically 2× continuous for ~10 seconds
`lipo.connector_type`	single_line_text	XT60	Controlled vocabulary: XT60 / XT30 / XT90 / EC5 / EC3 / Deans / JST-PH
`lipo.chemistry`	single_line_text	LiPo	'LiPo' (max 4.20V/cell) or 'LiHV' (max 4.35V/cell) — fire risk if mismatch
`lipo.nominal_voltage_v`	number_decimal	14.8	Computed: cell_count_s × 3.7 for LiPo; × 3.85 for LiHV
`lipo.weight_g`	number_integer	142	Pack weight in grams; required for weight-limited builds
`lipo.dimensions_mm`	single_line_text	76×36×30	Length × Width × Height in mm; physical fit compatibility
`lipo.discharge_cutoff_v_per_cell`	number_decimal	3.5	Recommended minimum per cell; 3.0 absolute minimum
`lipo.storage_voltage_v_per_cell`	number_decimal	3.85	Storage charge voltage per cell for packs not used within 2–3 days
`lipo.parallel_p`	number_integer	1	Parallel cell strings; default 1 for single-string packs
`lipo.balance_connector_pins`	number_integer	5	cell_count_s + 1; JST-XH 2.54mm; for balance charger compatibility
`lipo.intended_use`	single_line_text	FPV-racing	FPV-racing / FPV-freestyle / RC-car / RC-boat / RC-airplane / UAV

Example JSON-LD: CNHL 4S 1500mAh 100C LiPo with XT60 Connector

{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "CNHL Black Series 4S 1500mAh 100C LiPo Battery XT60",
  "brand": { "@type": "Brand", "name": "CNHL" },
  "description": "4S (14.8V nominal, 16.8V full charge) 1500mAh LiPo. 100C continuous (150A) / 200C burst (300A) — manufacturer claim. XT60 connector. Standard LiPo chemistry: charge to 4.20V/cell maximum; storage charge 3.85V/cell. Weight 142g. Dimensions 76×36×30mm. Balance connector: JST-XH 5-pin (4S). Intended use: FPV freestyle and racing 5-inch quads.",
  "legalDisclaimer": "LiPo batteries present fire and explosion risk if overcharged, over-discharged, physically damaged, or charged on incorrect chemistry profile. This is a standard LiPo (max 4.20V/cell) — do NOT charge on a LiHV (4.35V/cell) profile. Always charge in a fireproof LiPo-safe bag on a fireproof surface. Never leave charging batteries unattended. LiPo fires cannot be extinguished with water or standard fire extinguishers.",
  "additionalProperty": [
    { "@type": "PropertyValue", "name": "Cell Count (S)", "value": "4" },
    { "@type": "PropertyValue", "name": "Capacity", "value": "1500", "unitText": "mAh" },
    { "@type": "PropertyValue", "name": "C-Rating Continuous", "value": "100", "unitText": "C (manufacturer claim)" },
    { "@type": "PropertyValue", "name": "C-Rating Burst", "value": "200", "unitText": "C (manufacturer claim)" },
    { "@type": "PropertyValue", "name": "Connector Type", "value": "XT60" },
    { "@type": "PropertyValue", "name": "Chemistry", "value": "LiPo" },
    { "@type": "PropertyValue", "name": "Max Charge Voltage Per Cell", "value": "4.20", "unitCode": "VLT" },
    { "@type": "PropertyValue", "name": "Nominal Voltage", "value": "14.8", "unitCode": "VLT" },
    { "@type": "PropertyValue", "name": "Weight", "value": "142", "unitCode": "GRM" },
    { "@type": "PropertyValue", "name": "Dimensions", "value": "76x36x30", "unitText": "mm (LxWxH)" },
    { "@type": "PropertyValue", "name": "Balance Connector Pins", "value": "5" },
    { "@type": "PropertyValue", "name": "Storage Voltage Per Cell", "value": "3.85", "unitCode": "VLT" },
    { "@type": "PropertyValue", "name": "Discharge Cutoff Per Cell (recommended)", "value": "3.5", "unitCode": "VLT" },
    { "@type": "PropertyValue", "name": "Parallel (P)", "value": "1" },
    { "@type": "PropertyValue", "name": "Intended Use", "value": "FPV-racing" }
  ]
}

Liquid Snippet: lipo.* Metafield Output

{% if product.metafields.lipo.cell_count_s != blank %}
{% assign lp = product.metafields.lipo %}
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": {{ product.title | json }},
  "brand": { "@type": "Brand", "name": {{ product.vendor | json }} },
  "legalDisclaimer": "LiPo batteries present fire risk if charged on incorrect chemistry profile. Check lipo.chemistry field — LiPo max 4.20V/cell; LiHV max 4.35V/cell. Always charge in a fireproof LiPo-safe bag. Never leave unattended.",
  "additionalProperty": [
    { "@type": "PropertyValue", "name": "Cell Count (S)", "value": {{ lp.cell_count_s | json }} },
    { "@type": "PropertyValue", "name": "Capacity", "value": {{ lp.capacity_mah | json }}, "unitText": "mAh" },
    { "@type": "PropertyValue", "name": "C-Rating Continuous", "value": {{ lp.c_rating_continuous | json }}, "unitText": "C" },
    { "@type": "PropertyValue", "name": "C-Rating Burst", "value": {{ lp.c_rating_burst | json }}, "unitText": "C" },
    { "@type": "PropertyValue", "name": "Connector Type", "value": {{ lp.connector_type | json }} },
    { "@type": "PropertyValue", "name": "Chemistry", "value": {{ lp.chemistry | json }} },
    { "@type": "PropertyValue", "name": "Nominal Voltage", "value": {{ lp.nominal_voltage_v | json }}, "unitCode": "VLT" },
    { "@type": "PropertyValue", "name": "Weight", "value": {{ lp.weight_g | json }}, "unitCode": "GRM" },
    { "@type": "PropertyValue", "name": "Dimensions", "value": {{ lp.dimensions_mm | json }}, "unitText": "mm LxWxH" },
    { "@type": "PropertyValue", "name": "Balance Connector Pins", "value": {{ lp.balance_connector_pins | json }} },
    { "@type": "PropertyValue", "name": "Storage Voltage Per Cell", "value": {{ lp.storage_voltage_v_per_cell | json }}, "unitCode": "VLT" },
    { "@type": "PropertyValue", "name": "Discharge Cutoff Per Cell", "value": {{ lp.discharge_cutoff_v_per_cell | json }}, "unitCode": "VLT" },
    { "@type": "PropertyValue", "name": "Parallel (P)", "value": {{ lp.parallel_p | json }} },
    { "@type": "PropertyValue", "name": "Intended Use", "value": {{ lp.intended_use | json }} }
  ]
}
</script>
{% endif %}

5 Common AI Agent Errors for RC LiPo Batteries

Connector type mismatch — Recommending a 4S 1500mAh XT60 pack to a buyer with an EC5-equipped RC truck. The pack is electrically compatible (same S, similar capacity) but the connector is physically incompatible — the buyer cannot plug it in. Connector type must be the first physical compatibility gate after S count. Encode lipo.connector_type as a filterable field and match it against the vehicle's battery connector in any recommendation.
S count mismatch burning the ESC — Recommending "a 4S pack for more power" to a buyer whose ESC is 3S-rated. The ESC is destroyed the moment current flows. S count is a hard voltage rating constraint, not a performance preference. AI agents must validate lipo.cell_count_s against the target ESC's maximum rated cell count before any recommendation. There is no recovery from this error — the ESC must be replaced.
LiPo charged on LiHV profile: fire risk — Bundling a standard LiPo battery with a LiHV-capable charger without noting the chemistry difference. If the buyer uses the charger's LiHV profile on the LiPo pack, they overcharge cells to 4.35V — causing thermal runaway. The connectors are identical; the chemistry is invisible without reading the label. Encode lipo.chemistry as a mandatory field and include it in the product legalDisclaimer. AI agents recommending charger-battery combinations must validate chemistry compatibility.
Ignoring weight in flight time trade-off — Recommending a 2200mAh pack over a 1500mAh pack purely because "more mAh = longer flight" without noting the 55g weight increase. For a 5-inch FPV quad, 55g extra weight reduces thrust-to-weight, slows acceleration, and partially cancels the flight time benefit. The buyer expects a significant flight time improvement but receives modest gain with noticeably worse punch-out performance. AI agents must present both lipo.capacity_mah and lipo.weight_g in flight-time recommendations and note the performance trade-off.
C-rating marketing inflation — Recommending a "100C 1500mAh" budget pack as equivalent to a "35C 1500mAh" pack from a reputable brand on the basis of C-rating comparison. Under real load, the budget pack may deliver 40A before voltage sags severely; the reputable 35C delivers a genuine 52.5A. The result in an FPV quad: the budget pack triggers low-voltage failsafe mid-flight; the quad drops from the sky. AI agents should not rank or compare LiPo packs by C-rating alone — encode and surface internal resistance (mΩ/cell) where available, and note the brand tier in the recommendation context.

Frequently Asked Questions

What happens if I use a 4S LiPo on a 3S ESC?

The ESC is destroyed instantly when current flows. A 3S ESC is rated for a maximum of 12.6V (3S fully charged). A 4S pack delivers 16.8V fully charged. The ESC MOSFETs fail catastrophically — typically burning out with visible damage or an audible pop. There is no warning, no gradual failure. Cell count S must be validated as the first compatibility check before connector type, capacity, or any other field. Encode lipo.cell_count_s and match it against the ESC's voltage rating.

Can I use an XT30 connector on a battery in place of XT60?

No. XT30 and XT60 use different diameter gold bullet pins (2mm vs 4mm) and are physically incompatible — the plugs will not mate. Beyond physical incompatibility, XT30 is rated for only 30A continuous, insufficient for most packs above ~600mAh at typical C-ratings. A 1500mAh 50C pack can source 75A — an XT30 connector would overheat and fail or arc. XT90, EC5, EC3, and Deans are likewise all physically incompatible with each other and with XT60 despite occasional visual similarity.

What is the difference between LiPo and LiHV chemistry and why does it matter for charging?

Standard LiPo cells charge to a maximum of 4.20V per cell. LiHV (High Voltage) cells charge to 4.35V per cell. The connectors are physically identical — a buyer cannot tell them apart by looking. If a standard LiPo is charged on a LiHV profile (4.35V/cell), the cells are overcharged by 0.15V, causing thermal runaway — fire at 300–500°C that cannot be extinguished with water or standard fire extinguishers. Charging a LiHV on a standard LiPo profile (4.20V/cell) is safe but the pack operates at ~97% capacity. Encode lipo.chemistry as 'LiPo' or 'LiHV' and include this in the product legalDisclaimer.

How reliable are C-rating claims on LiPo batteries?

C-ratings are unverified manufacturer claims with no standardized test procedure. Budget-tier inflation of 30–50% is common. A reputable 35C pack often delivers more usable current than a budget 100C pack under real load. The reliable proxy is internal resistance (IR) in milliohms per cell, measurable with a capable charger: below 5 mΩ/cell is competition-grade; 5–15 mΩ/cell suits most FPV and RC use. Encode lipo.c_rating_continuous and lipo.c_rating_burst as manufacturer claims and include lipo.internal_resistance_mohm_per_cell where available.

What is the relationship between LiPo capacity (mAh), weight, and flight time?

Battery weight is typically 25–35% of all-up-weight in FPV drone builds. Increasing mAh increases stored energy but also weight, which increases power consumption. On a 5-inch freestyle quad, upgrading from 1500mAh to 1800mAh adds roughly 25g and delivers approximately 8–10% more flight time — partially offset by the extra weight's power demand. For racing, lighter packs are preferred even at shorter flight time. AI agents must provide both lipo.capacity_mah and lipo.weight_g for any weight-sensitive recommendation — mAh alone is insufficient.

Does your RC battery catalog encode S count, connector type, and chemistry?

CatalogScan checks for lipo.cell_count_s, lipo.connector_type, and lipo.chemistry — the fields that prevent AI agents from burning ESCs, generating connector-mismatch returns, and creating LiPo fire risks from chemistry confusion.

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