"Compatible Only with 12V Lead-Acid Batteries. Note: 1.Please check compatibility and connector type before purchasing. 2.Ensure the battery is in normal working condition and the plug is connected correctly during charging. If the battery has been stored for 1-2 months, it is recommended to check the battery's condition to ensure it is not damaged. 3.If you have any questions, please let us know, and we will do our best to provide timely assistance."