When there is a defect in a battery, meaning the battery is not functioning properly or discharging faster than usual, it is advisable to take it to a battery repair center. When a lithium-ion battery arrives at the battery repair center, it usually goes through three important phases: 1.Test and diagnosis: the battery is tested and checked for damages. The diagnosis will help the repair center understand what needs to be done to fix it and determine the next possible steps. 2.Repair: A team of high-voltage specialists will repair the battery, replace certain parts of the pack, and restore it to its original condition (defective module which have degraded/ lost power are replaced) Leak test will be performed after the repair activity. 3.Return: the repaired battery will find its way back to the customer, ready to be used in their electric car. The authorized person at the dealer end will reinstall the battery in the car and perform a final check to ensure that everything is functioning well.