It's important to note that repairing a cracked battery in a Samsung Galaxy J7 Prime 2 is not a typical repair procedure. The battery in most smartphones is a sealed unit, and attempting to repair a cracked battery can be dangerous due to the risk of battery leakage, fire, or explosion. If you suspect that your Samsung Galaxy J7 Prime 2's battery is damaged or cracked, it's recommended to immediately stop using the device and seek professional assistance from authorized service centers or qualified technicians. They can safely replace the battery with a new and properly functioning one to ensure the safety and performance of your device. Attempting to repair a cracked battery yourself or using unauthorized repair services can pose significant risks to your safety and the integrity of your device. Always prioritize safety and consult with professionals for any repair needs related to your Samsung Galaxy J7 Prime 2's battery.