606090 Li‑Po Replacement Battery 3.7V 4000mAh Rechargeable Lithium Polymer Cell for Portable Tablet Bluetooth Speaker DIY Power Bank Made in China

Basic Properties

Place of Origin: Shenzhen, China

Brand Name: MEISAEN

Certification: CE, RoHS, UN38.3, MSDS, IEC 62619

Trading Properties

Minimum Order Quantity: 100PCS

Payment Terms: T/T

Supply Ability: 300000 Pieces per Month

Rechargeable Li Polymer Battery

Lithium Polymer Battery Pack

Specifications

No custom attributes available for this product.

Product Description

606090 3.7V 4000mAh Lithium Polymer Rechargeable Battery

This model 606090 li‑poly battery delivers stable 3.7V nominal voltage and large 4000mAh capacity, comes with pre‑attached red and black wires for easy wiring and installation.

Built‑in PCM protection board prevents over‑charging, over‑discharging, over‑current and short‑circuit, greatly improving battery safety and service life. More than 500 charge‑discharge cycles for long‑term daily use.

Wide Application Scenarios

✅ Power bank DIY & replacement

✅ Tablet, portable display

✅ Bluetooth speaker, portable audio

✅ GPS device, handheld instrument

✅ Smart home gadgets, medical portable equipment

✅ Electronic toys & DIY electronic projects

Custom service: We support custom wire length, JST/XH connector, NTC thermistor upon your requirement. Contact our sales team for bulk wholesale order.

Product Specifications

表格

Item	Parameter
Model	606090
Battery Type	Lithium Polymer (Li‑Po)
Nominal Voltage	3.7V
Nominal Capacity	4000mAh
Energy	14.8Wh
Charge Cut‑off Voltage	4.2V
Discharge Cut‑off Voltage	2.75V
Cycle Life	≥500 cycles
Accessory	Red & Black Wires (without connector)
Protection Circuit	Built‑in PCM protection

Important Safety Notes

Only use dedicated 4.2V lithium‑ion charger for charging. Do NOT use unqualified power adapter.
Do not squeeze, puncture, disassemble or throw battery into fire.
Please install correctly for positive(+) and negative(-) polarity, wrong connection will damage the battery.
For bulk purchase or customized connector/wire length, please send inquiry.