If you want to return our battery back, please pay attention to the following points to avoid short circuit caused by improper operation. If the battery has a switch, be sure to turn off the power switch. Please keep the positive and negative poles of the battery insulated just like the battery you received. Please use foam or other materials to fix the battery to avoid the battery shake in the carton. The item "36V15Ah Silver Fish Battery Electric Bike Battery for 500W Kit E-bike Battery" is in sale since Tuesday, March 23, 2021.This item is in the category "Sporting Goods\Cycling\Bike Components & Parts\Electric Bike Components". The seller is "shimostuk" and is located in Walsall. This item can be shipped to United Kingdom.