Factory KC CE 502530 350mah lipo battery


The 502530 is a 3.7V 350mAh small rechargeable polymer battery that can quickly be integrated into a wide range of smart electronic devices. The battery comprises a single prismatic cell in a 1-series, 1-parallel configuration. An integrated battery protection circuit board (PCB) provides protection against over-charge, over-discharge, over-current, and short-circuit. Wire length and connector are optional.

Product Type

3.7V lipo battery

Model number


Voltage (Nominal)


Capacity (Nominal)



Cell 5.0±0.2*25±0.5*30±0.5mm

Constant Discharge Current

0.2C(Standard), 1C(Max )

Working Temperature

charge: 0-45℃; discharge: -20-60℃

Details about Factory KC CE 502530 350mah lipo battery

Product description

Li-ion polymer battery has many own advantages, like variable size, lightweight, high safety, high energy density, no memory effect, and so on.

Size, voltage, capacity, rated power, temperature……can be customized; PCB, wires, connector,…can be assembled. Contact us now!

Product features

  • Lithium polymer battery has high energy density.
  • Long cycle life of charge&discharge.
  • Enhanced safety parameters with Japan SEIKO PCB &MOS protectors.
  • Support OEM&ODM service for customize size.
  • Can be assembled with pointed connectors(JST, Molex, HRS, and so on).

Product details


Basic Information

Cell Dimension( thickness*width*length) 5.0±0.2*25±0.5*30±0.5mm
Charge voltage 4.2V±0.03V
Nominal voltage 3.7V
Nominal capacity 350mAh
Fully charge voltage 4.2V
Ship out voltage 3.8-4.1V
Battery specification Charge current Standard Charging:0.2C (70mA)
Rapid charge:1.0C(350mA)
Charging method Charge with constant current 0.2c to 4.2V, then charge with constant voltage 4.2v till until charge current is less than 0.01C
Standard discharge current 0.2C(70mA)
Max.discharge current 1.0C(350mA)
Discharge cut-off voltage 3.0V
Operating environment Charging:0℃~45℃
Storage temperature less than one month -20℃~40℃; less than half year -20℃~30℃
PCB&Wires&connector Optional
 Cycles 500 times
Warranty 12 months
Certificates KC/CE
Warning Do not overcharge, force charge, short circuit, disassemble, deform, heat, or place the battery near a direct flame. Any of the above actions could cause it to ignite, explode or become damaged.
Keep this battery out of the reach of children.
When storing the battery or throwing it away, be sure to cover it with tape.
Main Features Thin format, lightweight, flat size, and flexibility in design.
Easily customized, Energy density, High capacity.
Applications Smart wearable devices: smart watches, smart glasses, smart clothes, smart shoes, smart mask.
Electric tools: saws, electric drill, electric toys, remote control devices.
Medical devices: portable electronic medical devices, hearing aids, electric wheelchairs.
Beauty and bluetooth device: electronic beauty, hairdresser, bluetooth headset, loudspeaker.

Product assemble

502530 factory customized lipo battery


  1. Advanced automatic equipment production.
  2. Mass production with international certifications.
  3. Importantly 100% inspection before shipment.
  4. Professional R&D center to cooperate with specification, proofing process and free samples.
  5. Excellent service system to respond quickly for your questions and provide solution.

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