High-capacity 300mAh lithium polymer battery ensures long-lasting power for continuous device operation

Precision-engineered with ultra-thin polymer cells and gold-plated connectors for optimal conductivity

Multi-device compatibility: ideal for vehicle data loggers, portable LED speakers, 3D glasses, and TWS earphone charging cases

Built-in intelligent protection circuit prevents overcharge/over-discharge with ±0.1V voltage accuracy

Military-grade shockproof casing withstands extreme temperatures (-20°C to 60°C)

Space-saving compact design (45×30×5mm) perfect for portable electronics integration

Certified RoHS/CE compliant with 500+ charge cycles at 80% capacity retention