Batteries20–30 minEasy

iPhone battery replacement

Safe cell removal, BMS handling so health reporting stays intact, and the calibration cycle that stops callbacks.

What you need

01
Discharge below 25%
A low state of charge dramatically reduces thermal-event risk during removal.
02
Open and isolate
Heat the perimeter, open the device, then disconnect the battery connector before touching anything else.
03
Release the pull-tabs slowly
Pull at a shallow angle, steady and continuous, one tab at a time. If a tab snaps, flood IPA under the cell and wait.
Never pry a cell with metal. A punctured cell can vent — stop, bag it in the supplied fire-safe pouch and move it outside.
04
Transfer the BMS if the model requires it
Move the original chip across, or pair the new cell with a programmer, so health reporting stays intact.
05
Fit the new adhesive and cell
Dry-fit first, confirm the flex reaches its connector without tension, then peel and press for 10 seconds.
06
Reconnect, boot and verify
Check settings shows 100% health and that no service warning appears.
07
Run one calibration cycle
Drain to shutdown, then charge uninterrupted to 100% to sync the coulomb counter.

The BMS is not paired to the logic board. Transfer the original chip or pair with a programmer.

Stale coulomb counter. One full 0–100% calibration cycle resolves it.

The battery flex is not fully seated. Reseat until it clicks, then force-restart on charge for 30 seconds.

Usually a cell nicked during removal. Never refit a dented cell; only use nylon tools and the pull-tabs.

Will the customer see a health warning?: No. Certified cells keep health reporting intact; where a model needs pairing, transfer the chip or use a programmer.
How long should the cell last?: Cycle-tested to hold 80%+ capacity past 500 cycles — comfortably a full 24-month contract.
How are cells shipped?: Individually in fire-safe, anti-static pouches, UN38.3 certified, with a courier cleared for lithium transport.