Replacing the battery in an iPhone 6s is a practical solution for restoring the device's health and extending its usable life. Over time, the lithium-ion battery inside your phone degrades, leading to shorter runtime and unexpected shutdowns. This guide walks you through the process with clear, reliable steps.
Signs You Need a Battery Replacement
Before you begin the replacement, it is important to confirm that the battery is the actual problem. Common symptoms include rapid power loss, the phone shutting down unexpectedly even when the battery indicator shows a charge, and the device failing to turn on without being plugged in. Another telltale sign is a swollen battery, which can cause the screen to bulge or the back panel to warp.
Preparation and Safety Precautions
Safety and preparation are critical when changing an iPhone 6s battery. You should power down the device completely to prevent short circuits. Working in a clean, well-lit area minimizes the risk of losing small components. It is also advisable to keep a magnetic mat or container nearby to organize screws, as these tiny parts are easy to misplace.
Power off the iPhone 6s and disconnect any cables.
Gather a Phillips #00 screwdriver, a pentalobe screwdriver, and a plastic opening tool.
Ensure you are working on a static-free surface.
Removing the Old Battery
Disassembling the Device
To access the battery, you must first remove the two pentalobe screws located at the bottom of the phone and carefully lift the display assembly. The display cables are delicate; use the plastic opening tool to gently disconnect them from the logic board. Take your time to avoid damaging the connectors.
Extracting the Battery
Once the display is free, locate the battery adhesive strips. You will need to pull the bottom tab slowly to release the first adhesive side. After the tab is pulled, use a suction cup to lift the battery slightly, then slide a plastic tool underneath to remove the rest of the adhesive. Caution is required here, as the battery can be punctured if excessive force is applied.
Use the suction cup to create a small gap.
Slide the pry tool along the edges to detach the adhesive.
Lift the battery gently and remove it from the chassis.
Installing the New Battery
With the old battery removed, you can prepare the new component. Most replacement batteries come with pre-installed adhesive strips. Align the new battery with the screw mount and place it carefully into the compartment. Apply even pressure until it sits flush with the frame.
Before reassembling the phone, ensure the battery connector is clean and free of debris. Connect the battery cable to the logic board and verify that it is securely seated.
Reassembly and Calibration
Reassembling the iPhone 6s requires reversing the disassembly steps. Begin by reconnecting the display cables and securing the bracket. Replace the screws on the bottom of the phone and ensure the screen is aligned properly before tightening the screws.
Post-Replacement Calibration
After the new battery is installed, power on the device. The phone may show a significant charge initially, but this is often an inaccurate reading. To calibrate the battery, charge it to 100 percent without interruption. Once full, use the phone until it powers down, then charge it again to 100 percent. This process helps the software recognize the new battery's true capacity.
