Introduction

The 3.7V polymer lithium-ion battery is a high-energy-density, lightweight, and customizable rechargeable battery. Compared to traditional cylindrical cells, its flexible packaging and thin design allow for better integration into product structures.

Advantage

High Safety

The 3.7V polymer lithium-ion battery has passed drop tests and features overcharge, over-discharge, and short-circuit protection. It is fire-resistant and leak-proof, ensuring safety and reliability.

Long Cycle Life

≥300 complete charge-discharge cycles, reducing replacement frequency and saving overall costs.

Wide Temperature Range

The battery can be charged and discharged between 0°C and 45°C and can be stored between -10°C and 45°C, adapting to daily usage environments and seasonal changes.

Specification

Items	Specifications
Batteries	3.7v 200mah lipo battery
Charge voltage	4.2V
Nominal voltage	3.7V
Nominal capacity	280mAh 0.2C Discharge
Charge current	Standard Charging: 0.5C Rapid charge: 1.0C
Standard Charging Method	0.5C CC (constant current) charge to 4.2V, then CV (constant voltage 4.2V) charge till charge current decline to ≤0.05C
Charging time	Standard Charging: 2.75hours(Ref.) Rapid charge: 2hours(Ref.)
Max. charge current	1.0C
Max. discharge current	1.0C
Discharge cut-off voltage	2.75V(0.2C)
Operating temperature	Charging: 0 °C ~45 °C Discharging:0 °C ~45 °Carging: 0 °C ~45 °C
Discharging:Storage temperature0 °C ~45 °C	-10°C~ +45 °C
Dimension	Length: 50±2mm (not including tabs) Width: 20±0.5mm Thickness:10±0.2mm
Drop Test	The cell is to be dropped from a height of meters twice onto concrete ground. No fire, no leakage
Cycle time	≥300times

Customization

Customization Item	Customization Options
Cell Dimensions	Length, Width, Thickness
Voltage & Capacity	3.7V, 3.8V, 4.2V; flexible capacity configuration
Discharge Rate & Fast Charge	Discharge rate 1C ~ 3C+; supports fast charging
Protection Circuit Design	PCM/BMS; overcharge, over-discharge, overcurrent, short-circuit protection; temperature control module; smart interfaces (Bluetooth/I²C/SMBus)

Why Partner with Us

Large-Scale Production Capacity

Our daily production capacity reaches 600,000 units, with an annual output of approximately 120 million polymer lithium batteries, capable of stably meeting the demands of large-volume orders.

Strong R&D Capabilities

We possess a professional R&D center and core team with over 10 years of industry experience, providing product development and technical support.

Certifications
We hold CCC certification, ISO 9001 quality system certification, KC certification, UL certification, RoHS compliance certification, two invention patents, and one utility model patent.

Quality Control

From raw material selection to end-to-end production monitoring, 100% online functional testing, and multi-dimensional structural inspections, we ensure that every battery is stable, safe, and reliable.