Rplacement lithium ion Battery 3.7v Size: 2.65 *1.46 *0.75 Inches, Weight: 90g,Capacity: 5200mAh 3.7 volt rechargeable battery for 3.7V~4.2V equipment. For example, Bluetooth speakers, solar outdoor lights, solar cameras, etc. After receiving the battery, check whether the position of the red (+) and black (-) wires of the plug is consistent with the old battery. In different positions, you need to adjust the position. If the plug size is different, You can change the interface port with instructions. Please use this product correctly and keep away from water and fire. Do not squeeze, throw, hit, disassemble, etc. Discard in a trash can with a dedicated battery. 【After-sales Service】12-month warranty . Please feel free to contact us with any question, 24*7 Email support. 3.7VLi-ion Replacement Battery Compatible devices: all DC powered electronic equipment Size: 2.65 *1.46 *0.75 Inches Connector :JST-PH 2.0mm （Please check the interface shown in the picture, it can only be used at PH 2.0mm, and other interfaces can be replaced by themselves!）