Built-in protection circuit (PCM) prevents over charging/discharging.
Varta CP1254 Tabbed (A3) TWS Wireless Bluetooth Earphone Battery - 3.7V 60mAh
TWS Wireless Earphone Lithium Soft Wrap Li-Po Battery - LIR1054 3.7V 85mAh
Wireless Bluetooth 4.0 12V Car Battery Monitor Battery Tester Battery Load Teste
Uniamy 2P X CP1254 A4 Replacement Battery Compatible With Galaxy Buds Buds Live Earbuds wf1000x WF-1000XM3 WF-SP700N Bluetooth Headset Powerbeats Pro Momentum Wireless 3 Earbuds MTW3 C 3.0 Earbuds
Lithium Polymer Battery 3.7V 10000mAh 1160100 Lipo Rechargeable Battery Pack with JST Connector for Bluetooth Speakers, Wireless Earbuds, Portable Electronics
Zodazoqa Battery Monitor BA100 Bluetooth 4.0 Wireless Battery Tester 12V Automotive Battery Load Tester,Automotive Charging and Cranking System Monitor Compatible with Android iOS
