Degraded cells in the iPhone 11 Pro Max lose capacity quietly until the phone cannot hold a useful charge. A new battery is a quick, contained fix that leaves your data untouched. Battery jobs are quick and leave your setup untouched.
- Turnaround: Same day where possible, subject to stock and workload
- 6-month warranty on this repair
- Walk-in near Liverpool Street Station or UK mail-in service
Signs your iPhone 11 Pro Max needs this repair
- Needing a top-up by midday
- Percentage jumping around
- Slow or stalling charging
- Shutting down with charge still showing
- Only reliable while plugged in
What is included
- Safe removal of the worn battery
- Fitting of a quality replacement cell
- Charging and power-stability testing
- Full function check before handover
- 6-month warranty
How to confirm your model
Check the model number in your device settings, or bring it in and we will confirm the exact iPhone 11 Pro Max before any work begins. If you are unsure which repair you need, our team will advise.
Before you book
- If the phone has been opened before, we inspect the seals and connectors as part of the job.
- If the device is completely dead, we run a quick diagnosis before confirming the battery.
- If the phone has had liquid exposure, a battery may not resolve everything and we check first.
Our repair process
- Book or drop in: start online or come to the Liverpool Street workshop.
- Assessment: we confirm the fault and the right part before starting.
- Repair: the part is fitted carefully and the device reassembled.
- Testing and return: a full check, then collect in store or by tracked post.
Why choose us
- Every repair tested before it is handed back
- No data loss, this is a hardware repair
- Repair workshop near Liverpool Street, established since 2015
- Quality parts matched to your device
Related iPhone 11 Pro Max repairs
Frequently Asked Questions
How much runtime will I get back?
A fresh cell restores close to original runtime. We fit quality batteries and test charging before returning the phone.
Can I walk in or post it?
Both. Walk in near Liverpool Street Station or post it with tracked return.
How do I know the battery is the problem?
Fast drain, early shutdowns, only running on the charger or a swelling cell are the usual signs. We confirm before any work.
Is it worth replacing rather than upgrading?
If the phone is otherwise sound, a battery is a far cheaper way to get reliable all-day use again.
Is the battery replacement guaranteed?
Yes. The warranty for this repair is shown on the page and applies to the fitted battery.
Will I lose my data during a battery replacement?
No. It is a hardware-only procedure and your data stays exactly as it is.