Quick Fit Check
The CNHL 2100mAh 6.6V 2S LiFe LiFePO4 Receiver Battery with EC3 & JST Plug is designed for RC pilots who need stable receiver-side power, compact size, and safer LiFe chemistry for onboard electronics. With 2100mAh capacity, 6.6V 2S LiFe voltage, EC3 and JST output leads, and a JST-XH balance connector, this pack is a practical choice for RC airplane receiver batteries, Spektrum PowerSafe-style receiver systems, ignition modules, onboard accessories, and selected transmitter battery applications where voltage, connector, polarity, and tray size match.
This battery is best used when your receiver system, power distribution unit, switch harness, ignition module, or transmitter supports 6.6V 2S LiFe / LiFePO4 power. Before buying, confirm the required connector, polarity, voltage range, battery tray size, wire routing, and capacity needs. EC3 and IC3 are often searched together in Spektrum receiver power systems, but connector fit and polarity should always be checked before use.
Product Specifications
| Capacity |
2100mAh |
| Voltage |
6.6V / 2S |
| Chemistry |
LiFe / LiFePO4 |
| Discharge Rate |
20C Continuous / 40C Burst |
| Output Connector |
EC3 & JST Plug |
| Dimensions (L × W × H) |
90 × 42 × 17mm |
| Weight |
Approx. 138g |
| Charge Rate |
3C Max |
| Balance Connector |
JST-XH |
| Wire Gauge |
12 / 20AWG |
| Stock Number |
LF210202EC3 |
Core Description
The CNHL 2100mAh 6.6V 2S LiFe receiver battery is built for RC systems that need dependable receiver-side power without using a main drive battery or ESC BEC as the only power source. It is especially useful for larger RC airplanes, gas aircraft, ignition systems, receiver battery setups, and PowerSafe-style systems where a dedicated onboard battery is preferred.
LiFe / LiFePO4 chemistry is popular for receiver batteries because it provides a stable 6.6V nominal output, a flatter discharge curve than many older NiMH packs, and a more electronics-friendly voltage profile than a fully charged 2S LiPo. For servos, receivers, ignition modules, and onboard accessories, that stable power behavior can be more important than maximum voltage.
The EC3 and JST dual-output design gives this pack more flexibility than a single-lead receiver battery. The EC3 lead is useful for compatible Spektrum PowerSafe-style receiver systems, EC3 / IC3 receiver battery inputs, and selected transmitter or power-box applications. The JST lead can support compatible receiver-side accessories, switch harnesses, ignition systems, or onboard electronics when voltage and current requirements are suitable.
Dual-Purpose Design: Receiver Battery and Selected Transmitter Battery Use
This 2100mAh 2S LiFe pack is designed primarily as a receiver battery for RC aircraft and onboard electronics, but it may also be used as a transmitter battery in radios that specifically support 2S LiFe voltage, EC3-style input, and the physical battery size. Always check the transmitter manual, polarity, tray size, and charging procedure before use.
For receiver-side use, this pack can power compatible receiver systems directly through EC3 / IC3-style battery inputs, or through a suitable switch harness or power distribution system. For standard receivers that do not use EC3 or IC3 battery inputs, an adapter, switch, voltage-compatible harness, BEC, or power distribution system may be required.
For more plug variations and capacity options, explore the full CNHL LiFe battery collection.
Why Choose LiFe / LiFePO4 for Receiver Power?
A 6.6V LiFe receiver battery is often chosen because it gives a practical balance of safety, voltage stability, and compatibility for RC electronics. Compared with older NiMH receiver packs, LiFe batteries usually provide stronger voltage stability under load and less voltage drop during servo movement.
Compared with 2S LiPo batteries, LiFe batteries operate at a lower full-charge voltage, which can be easier for many receiver systems and servos to manage. That makes LiFe / LiFePO4 a popular choice for receiver packs, ignition packs, gas aircraft, large-scale airplanes, and pilots who want a stable onboard battery without pushing electronics to higher LiPo voltage.
This battery is not intended as a main motor battery for high-current propulsion systems. It is designed for receiver-side power, transmitter use where supported, ignition modules, accessories, and onboard electronics that match the voltage and connector requirements.
Spektrum EC3 / IC3 PowerSafe Receiver Compatibility
The CNHL 2100mAh 6.6V 2S LiFe LiFePO4 Battery with EC3 & JST Plug is a practical receiver-side power option for pilots using compatible Spektrum PowerSafe receiver systems with EC3 or IC3 battery inputs. Spektrum PowerSafe receivers are commonly used in larger aircraft with multiple servos, high-current loads, telemetry, and receiver battery monitoring.
| Receiver Model |
Battery Input Type |
CNHL Fitment Note |
| Spektrum AR10400T |
Dual IC3 battery inputs |
Compatible direction for EC3 / IC3 receiver battery systems. Check capacity, polarity, and receiver setup before use. |
| Spektrum AR12310T |
Dual EC3 battery leads |
Strong match for EC3 LiFe receiver battery applications in larger aircraft. |
| Spektrum AR14400T |
Dual IC3 battery input leads |
Suitable direction for compatible IC3 / EC3 PowerSafe receiver power setups. |
| Spektrum AR20310T |
Dual EC3 battery leads |
Compatible EC3 LiFe receiver battery direction for high-current aircraft receiver systems. |
| Spektrum AR20400T |
Dual IC3 battery input leads |
Suitable direction for compatible IC3 / EC3 PowerSafe receiver systems in larger aircraft. |
Compatibility Note: This EC3 LiFe pack is intended for compatible EC3 / IC3 receiver-side power systems, PowerSafe-style receivers, aircraft receiver packs, ignition systems, and onboard electronics. Standard Spektrum receivers without EC3 / IC3 battery inputs may require an adapter, switch harness, BEC, or compatible power distribution system. Always confirm connector type, polarity, voltage range, servo voltage rating, and capacity requirements before use.
Application Examples
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Spektrum TX Battery Use: Can be considered for Spektrum NX6, NX8, NX10, iX12, and similar radios that support 2S LiFe voltage, EC3-style battery input, correct polarity, and this pack size. Always check the transmitter manual before installation or charging.
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Spektrum PowerSafe Receiver Systems: Practical receiver-side power option for compatible Spektrum PowerSafe receivers with EC3 or IC3 battery inputs, including AR10400T, AR12310T, AR14400T, AR20310T, AR20400T, and similar aircraft receiver systems where 6.6V LiFe power is supported.
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RC Airplane Receiver Pack: Suitable for 1.5m to 1.7m RC warbirds, sport planes, EDF jets, scale aircraft, and larger electric airplanes that use a dedicated receiver battery for stable onboard control power.
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Gas Airplane Receiver Battery: A strong option for gas and gasoline RC airplanes where the receiver, servos, switch harness, or power distribution system is designed for 6.6V LiFe receiver battery input.
-
Ignition Battery: Can be used for compatible gas engine ignition modules that support 2S LiFe / LiFePO4 voltage and the available EC3 or JST connector setup. Always confirm current draw, polarity, and manufacturer voltage range.
-
RC Helicopter Receiver Power: Useful for compatible RC helicopter receiver systems that need stable 6.6V onboard power, especially when the model does not rely only on the ESC BEC.
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Accessory Power: The JST lead can support compatible onboard accessories such as lights, ignition modules, switches, telemetry accessories, or other low-current electronics when voltage and current requirements are suitable.
-
Power Distribution and Switch Harness Setups: Can be used with compatible switch harnesses, power boxes, or receiver power distribution systems that accept 6.6V LiFe input and match the EC3 / JST connector layout.
What to Check Before Buying
-
Voltage: Your receiver, transmitter, ignition module, or power system must support 6.6V 2S LiFe / LiFePO4 power.
-
Connector: This pack includes EC3 and JST output leads. Confirm the correct connector and polarity before use.
-
Battery size: Confirm your battery tray or radio compartment can fit 90 × 42 × 17mm.
-
Servo rating: Check whether your servos and receiver system are rated for direct 6.6V LiFe operation.
-
Capacity: 2100mAh is practical for many receiver systems, but large aircraft with many high-current servos may require larger capacity or dual-pack setups.
-
PowerSafe use: If using dual battery inputs, follow the receiver manual and use matched, properly charged packs when required.
-
Charging: Use a charger with LiFe / LiFePO4 mode and JST-XH balance support.
FAQ
What is this CNHL 2100mAh 6.6V LiFe battery best used for?
It is best used as an RC receiver battery, ignition battery, onboard accessory battery, or selected transmitter battery when the equipment supports 6.6V 2S LiFe power and the EC3 / JST connector setup.
Can this battery work with Spektrum PowerSafe receivers?
Yes, it can be used with compatible Spektrum PowerSafe receiver systems that use EC3 or IC3 battery inputs, provided voltage, polarity, capacity, and connector fit are confirmed before use.
Is EC3 the same as IC3?
No. EC3 and IC3 are related in the sense that they are often used in similar Spektrum-style power systems and are commonly searched together. This battery has an EC3 plug, so exact connector fit, polarity, and receiver input requirements should be checked before use.
Is this a LiPo battery?
No. This is a LiFe / LiFePO4 battery. It must be charged in LiFe / LiFePO4 mode, not standard LiPo mode.
Can I connect this battery directly to a standard receiver?
Only if the receiver, servos, connector, polarity, and voltage range support direct 6.6V LiFe input. Many setups require a switch harness, adapter, regulator, BEC, or power distribution system.
Can this be used as a transmitter battery?
It may be used only in transmitters that specifically support 2S LiFe voltage, EC3-style battery connection, correct polarity, and this pack size. Always check the radio manual before installation or charging.
What charger should I use?
Use a balance charger with LiFe / LiFePO4 mode and JST-XH balance support. Do not charge this battery in standard LiPo mode.
Charging and Safety Notice
- Charge only with a compatible balance charger in LiFe / LiFePO4 mode.
- Do not charge this battery in standard LiPo mode.
- Do not exceed 3.65V per cell when charging.
- Check connector polarity, pack voltage, receiver voltage range, and servo voltage rating before use.
- Inspect the battery surface, connector, wires, balance lead, and cell voltage before first use.
- Do not use the battery if it becomes swollen, damaged, overheated, or physically deformed.
- For receiver battery use, perform a proper range check, load check, and receiver battery monitor check before flying.
- For ignition or accessory use, confirm current draw and connector rating before installation.
- For long-term storage, store the battery partially charged in a cool and dry place.
- If a new battery does not initially hold full performance, several normal LiFe balance charge and discharge cycles may help stabilize the cells.
- Always follow standard LiFe battery safety procedures during charging, storage, transport, and use.
