The 3.7V 250mAh 402030 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Bluetooth Headset, Watch 3-Pack have been wearing these products for quite a long time. These 3.7V 250mAh 402030 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Bluetooth Headset, Watch 3-Pack products feature the iconic D-backs script on the front. This 3.7V 250mAh 402030 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Bluetooth Headset, Watch 3-Pack is made of light weight material so it’s very comfortable for you to wear for a long time.
This product is suitable for battery replacement of DIY 3.7-5v electronic products, mobile energy storage, power supply, LED light, wireless Bluetooth game headset, outdoor video and audio electronic scale, GPS Watch recorder, e-book, USB Fan tester, dash cam controller, mouse and keyboard.
Please carefully compare the polarity of the connector before use,the red wire is the positive "+" and the black wire is the negative "-"，Do not reverse-charge or reverse-connectreverse. The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn’t matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire.
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402030 rechargeable lithium ion polymer battery, nominal voltage 3.7V, capacity 250mAh, power 0.92Wh, size 4×20×30mm(0.157×0.787×1.22inch）(T*W*L).
It‘s consists of of large-capacity A+ lithium battery, Japanese Seiko IC overcharge and overcurrent short circuit protection board, 3302-26 high temperature resistant silicone cable, and genuine JST Pitch1.25mm 2-pin connector module.
It can prevent overcharge, overdischarge, overcurrent, and short circuit.
