Before purchasing the 3.7V 2500mAh battery, we strongly recommend that you read the following information. 1. Make sure that the product's interface is compatible with our SM 2P Plug and ensure that the battery's "+" and "-" terminals are inserted in the correct direction. 2. Confirm that our battery's size can fit your product . 3. Please avoid short-circuiting, puncturing, disassembling, deforming, heating, burning, or exposing the battery to open flames. This battery contains flammable substances such as lithium and organic solvents, and any of these actions can result in ignition, explosion, or damage. 4. Never over-discharge or force discharge the battery. Over-discharging may lead to the risk of explosion. 5. Avoid storing the battery in direct sunlight or in hot and humid places. 6. If you have any other questions or need further consultation, please contact us and we will assist you in resolving the issue.