Samsung devices that commonly appear for repair are the Galaxy S7 and Galaxy S7 Edge. Besides screen repair, battery replacement is a frequent problem. In this blog, we explain how to replace a battery in these devices in 5 steps.
Step 1: Heat the device before repair
The first step in replacing the battery of a Samsung Galaxy S7 or S7 Edge is to check whether the back cover of the device is still intact. The Samsung S7 and S7 Edge have to be opened from the back, so it’s a good idea to check first that there are no cracks in the back cover. If there are any cracks, you will need a new back cover as well as a battery, as the back almost always breaks when it’s dismantled.
Next, switch the device off to start the repair, then put the device in the Mobile Dryer at 80 degrees and press ‘heat’. Heating the device causes the adhesive layer to lose its effectiveness, and makes it easy to remove the back cover from the frame. After five minutes the device will start beeping, at which point remove the device from the dryer. Make sure you wear gloves to remove the device, as it will be very hot!
Step 2: Carefully open the device using the appropriate tools
You can then open the device from the base of the back cover, in one of two different ways. For example, you can use a suction cup together with a plastic card.
The method with the suction cup works as follows: you place the suction cup on the back cover, at the base. After that, you pull the back very carefully until an opening is created, then cut open the double-sided tape with the plastic opening card. Be careful! It’s important that you use a plastic card and not a metal opening tool. A plastic card will limit damage to the back cover of the device and the frame.
Step 3: Disconnect the battery from the device
After removing the back, open the plastic protective caps with the Pentaloop screwdriver, for example. These protective caps consist of three parts. Then disconnect the battery.
You can now continue with the next step: removing the old battery from the Samsung Galaxy S7 or S7 Edge. For this, use a spudger or a pryer card to loosen the battery on the right side of the frame (the motherboard is on the left).
Step 4: Connect the new battery
Once you have disconnected the battery, you need to connect the new battery. Then place the battery between the frame where the old battery was attached. If the old tape layer of the battery is missing, you can replace it with new battery tape. Then replace the three protective caps with the screws.
Step 5: Install the back cover back on the device
Before you reinstall the back cover, first check if there are any tape residues on the frame and the back cover of the device. If there are any residues, first clean the frame and back cover. Then attach the rear cover using new double-sided tape.
If you’re fitting a new back cover to the device, always let the customer know first to avoid any misunderstandings. New back covers often already have the double-sided tape. Heat up the back cover slightly with a hot air gun or a hot mat, so that the back attaches well to the frame.
Good luck with the repairs!