This battery is compatible with iPad Pro 11"2nd Gen 2020 A2228 A2231 A2068 A2230, please carefully check your phone model before purchase. When you replace your old battery, please carefully and gently disconnect your old battery's cable then connect your new battery to the mainboard. If your phone cannot be powered on with the new battery, you may need to install it again and be sure to check if the cable has been properly connected. All the batteries have been tested before shipping out, No installation instruction. Need professional installation technology, we won't be responsible for any damage due to improper operation.