【Check Before Purchase】Please confirm your device’s battery size (9.5×55×66mm), connector model, connector size, and connector polarity before ordering. This is not universal—mismatched polarity will damage your device. Always verify compatibility to ensure safe installation. 【Stable Power】3.7V 5000mAh rechargeable lithium polymer (LiPo) battery delivers long-lasting power output. With a maximum charge current of 2500mAh, it provides reliable performance for continuous use in electronics and portable devices. 【Reliable Performance & Long Cycle Life】Engineered with premium lithium polymer cells, this battery ensures no leaking, consistent voltage, and excellent cost performance. Supports hundreds of charge/discharge cycles, making it an ideal replacement battery for daily use. 【Built-in PCM Safety Protection】Equipped with advanced PCM protection circuit to safeguard against overcharge, over-discharge, over-current, and short circuits. Provides safe and stable operation for your devices. 【Wide Application Compatibility】Suitable for Bluetooth speakers, dash cams, wireless keyboards and mice, Wi-Fi smart home devices, GPS trackers, PDAs, e-books, digital cameras, health monitors (blood oxygen/pulse equipment), IoT devices, and more. ( Not suitable for drones.) Upgrade your devices with a high-capacity 3.7V 5000mAh lithium polymer rechargeable battery pack. Designed with a flat 955565 form factor (9.5 × 55 × 66 mm), this LiPo battery delivers long-lasting power while maintaining a compact size, making it an excellent replacement option for a wide range of electronics.