Description
The 7.4V 4000mAh Lithium-ion Battery Pack is a high-capacity, rechargeable power solution designed for a wide range of electronic devices and DIY projects. Built using a 2S configuration (two cells in series), it delivers a stable 7.4V output with reliable performance and long cycle life.
Key Features
- High Capacity: 4000mAh for extended runtime
- 7.4V Output (2S Configuration) – Stable and reliable voltage
- Rechargeable Li-ion Chemistry – Long lifespan and high energy density
- Built-in Protection Circuit (BMS) – Protects against overcharge, over-discharge, and short circuit
- Compact and Lightweight Design
- Multiple Connector Options – JST / Tamiya / XT60 (varies by batch)
Specification
- Battery Type: Lithium-ion (Li-ion)
- Nominal Voltage: 7.4V
- Full Charge Voltage: 8.4V
- Capacity: 4000mAh (4Ah)
- Configuration: 2S (2 cells in series)
- Max Continuous Discharge Current: ~8A (2C typical)
- Max Charge Current: ~2A (0.5C recommended)
- Discharge Cut-off Voltage: 5.5V – 6.0V
- Cycle Life: 500+ cycles (typical)
- Dimensions: Approx. 65 mm × 35 mm × 35 mm
- Weight: Approx. 150 g
- Temperature Range
- Charging: 0°C to 45°C
- Discharging: -20°C to 60°C
- Storage: -20°C to 25°C
Application
- Battery Type: Lithium-ion (Li-ion)
- Nominal Voltage: 7.4V
- Full Charge Voltage: 8.4V
- Capacity: 4000mAh (4Ah)
- Configuration: 2S (2 cells in series)
- Max Continuous Discharge Current: ~8A (2C typical)
- Max Charge Current: ~2A (0.5C recommended)
- Discharge Cut-off Voltage: 5.5V – 6.0V
- Cycle Life: 500+ cycles (typical)

