3.7V 4000mAh Li-Polymer Battery - High Energy Density from China Suppliers | Reliable Factory for Custom Solutions
Product Introduction
The 605056 3.7V 4000mAh rechargeable Lithium Polymer battery delivers high-capacity power in a slim, lightweight form. Utilizing advanced gel polymer electrolyte and flexible aluminum-plastic packaging, it ensures absolute safety with no leakage, fire or explosion risk. This 4000mAh cell offers stable discharge voltage, low self-discharge and 500+ charge cycles. Its high energy density and customizable dimensions make it ideal for devices demanding extended runtime without added bulk, providing consistent, reliable performance for power-hungry portable electronics.
Technical Specifications
| Nominal Voltage | 3.7V | Nominal Capacity | 4000mAh |
| Size | 6.2*50.5*58.5mm | Rough Weight | 100g |
| Battery Type | Li-polymer | Cycle Life | 500 times |
| Standard Charge | 0.2C | Max Charge | 1.0C |
| Standard Discharge | 0.2C | Max Discharge | 1.0C |
| Charge Temperature | 0 ~ 45℃ | Discharge Temperature | -10 ~ +60℃ |
Frequently Asked Questions
This 3.7V 4000mAh Li-polymer battery offers more than 500 charge-discharge cycles while maintaining stable voltage and high capacity retention under standard operating conditions.
The standard charge and discharge rate is 0.2C, while the maximum allowable charge and discharge current can reach up to 1.0C.
The battery safely charges between 0°C and 45°C and discharges reliably across a wide operating temperature range from -10°C to +60°C.
Engineered with advanced gel polymer electrolyte and flexible aluminum-plastic packaging, it prevents electrolyte leakage and significantly minimizes fire or explosion risks.
Yes, its high energy density and adaptable Li-polymer architecture support customizable dimensions and configurations for compact and slim electronics.