Sudden drain or “dies by lunch”
Capacity has fallen well below the original rating. The phone reports a healthy percentage, then collapses under load — maps, camera, or a 5G call. A capacity test confirms whether a battery replacement will fix it.
Phone Battery Replacement in LondonFor Phones That Run Out Of Power Before You Do
You charge overnight, leave home at full, and by mid-afternoon the phone is begging for a power bank. Or worse — it hits 30% and shuts down like someone pulled the plug. That is not normal wear you have to live with. Lithium-ion cells lose capacity over time, swell under heat, and eventually fail to hold a stable charge. A phone battery replacement restores all-day life for a fraction of the cost of a new handset, and most jobs are finished the same day at our London Bridge Surgery with a free inspection and a fixed price that does not change at the counter.
fone doctors has been swapping batteries since 2004 — iPhones, Samsung Galaxy, Google Pixel, OnePlus, and most Android devices. We use high-quality cells, reseal the chassis properly, and back every modular battery with our 12-month warranty. No bolt-ons, no surprises, no drama — ever.
Start Your Repair Now!
Lets Work Out which device you’re fixing
How Do You Know The Battery Is The Problem?
Not every power issue is the battery itself — a failing charging port or rogue app can look the same. Here is what we check for during free diagnostics.
Unexpected shutdowns at mid charge
iPhones and many Androids shut down at 20–40% when the cell can no longer deliver peak current. This is a classic ageing-battery symptom and is fixed by replacing the cell, not by a software reset alone.
Overheating while charging or idle
A swollen or internally shorted cell runs hot. Continued use can warp the frame or press against the display. We power down safely, inspect for swelling, and replace before damage spreads.
Service / low battery health warnings
iOS Battery Health, Samsung Device Care, and Pixel battery reports flag degraded cells. If peak performance capability is reduced or the battery is visibly swollen, replacement is the correct repair.
Not Sure It's The Battery?
Bring it in. The inspection is free, and you get a fixed price before we open the device.
No Diagnostic Fees
We test capacity and charging behaviour before recommending a battery swap — or tell you if the port or board is at fault instead.
No Fix, No Fee
If we cannot complete the repair, you pay nothing for the attempt.
Fixed While You Wait
Most phone battery replacements finish in around 30 to 45 minutes at London Bridge.
Transparent Pricing
The quote at inspection is the price you pay — parts, labour and VAT included.
Before You Book: Quick Checks That Cost Nothing
Update the OS, check for runaway apps in battery settings, and try a known-good charger and cable. Extreme cold or heat can also make a healthy battery look weak for a few minutes.
If the phone still dies under light use, shows a battery health warning, feels warmer than usual on the back glass, or the frame looks slightly proud (swelling), stop using third-party “calibration” tricks and get a proper inspection. Walking in costs nothing if a setting was all it needed.
What The Repair Actually Involves
We open the chassis, disconnect power, remove the old cell (including any adhesive that has welded it in place on newer sealed phones), fit a quality replacement, and reseal with fresh gasket adhesive. On iPhones we complete the system prompts so battery health reporting works correctly after the swap. On Android we verify charge rate, temperature, and capacity under load.
Your photos, apps and accounts stay on the device — a battery swap does not wipe storage. We still recommend a quick backup before any repair as good practice.
From Diagnosis To Recovery In Just Four Simple Steps!
Getting a fresh battery should be simple. From diagnosis to handover, we keep the process fast and transparent.
Step 1 Tell us what's wrong
Book online, call +44 20 7403 9111, or walk into London Bridge.
Step 2 Free diagnosis
We confirm battery health versus charging-port or board faults, then give a fixed price.
Step 3 We replace it
Most phone battery replacements are completed the same day — often in around 30 minutes in-clinic.
Step 4 Back in your pocket
Collect it, have it delivered, or use tracked post — covered by your 12-month warranty.
What It Costs
Phone battery replacement typically starts from £49 depending on model, with many popular iPhones and Android flagships in the £49–£79 range. Larger cells (Pro Max / Ultra) and some tablets or MacBooks are priced higher after inspection.
Every price includes the battery, labour, VAT, free diagnosis, and a 12-month warranty on the replaced cell. No bolt-ons, no surprises, no drama — ever.
Can't see your model? Browse the full price list for iPhone, Samsung Galaxy, Google Pixel, iPad and MacBook, or request a manual quote.
Battery Replacement Across Central London
A dying battery is not something you want to wait a week to fix. Our London Bridge Surgery at 8 London Bridge Walk, SE1 2SX, is the main walk-in hub, and most battery jobs finish the same day. City workers around Bank, Moorgate, Shoreditch, Aldgate and Liverpool Street can use our Liverpool Street clinic, and Canary Wharf has free collection across the Estate with loan devices on request.
We also offer collect-and-return across Zones 1–2 and UK-wide postal repair to the same standard as in-clinic work.
HOW WOULD YOU LIKE TO REPAIR YOUR DEVICE?
Whether you’re in Central London or somewhere three hours away from civilization,
Option 01
Walk-In Repairs at our London Bridge Surgery
Visit our London Bridge location for same-day repairs while you wait.
Book Now
Option 02
Book a repair appointment at our Liverpool Street Clinic
Just call ahead or book online for a quick visit to our Liverpool Street location for same-day repairs while you wait.
Book NowOption 03
Book a free collection in Canary Wharf
Just call ahead or book online for a free collection from your home or office in and around the Canary Wharf Estate for same-day repairs.
Book NowOption 04
Same-Day Collect & Return Repairs across London Zones 1–2 & Beyond
Enter your postcode to see if you’re in our constantly growing collection area.
Book NowOption 05
UK-Wide Postal Repairs
Post your device from anywhere in the UK using tracked delivery.
Book NowOption 06
Business & Callout Repairs
Need repairs for work devices or office teams? We offer business support and collection services.
Book NowOur Three London Clinics
A dying battery is not something you want to wait a week to fix. Our London Bridge Surgery at 8 London Bridge Walk, SE1 2SX, is the main walk-in hub, and most battery jobs finish the same day. City workers around Bank, Moorgate, Shoreditch, Aldgate and Liverpool Street can use our Liverpool Street clinic, and Canary Wharf has free collection across the Estate with loan devices on request.
We also offer collect-and-return across Zones 1–2 and UK-wide postal repair to the same standard as in-clinic work.
Battery Replacement Questions Answered Honestly
Everything you wanted to ask before handing over your phone — answered in plain English, without the corporate waffle.
Most phone battery replacements start from £49, with many popular models between £49 and £79. Exact pricing depends on the device and is confirmed at free inspection. All prices include parts, labour, VAT, and a 12-month warranty.
Around 30 to 45 minutes for most phones at London Bridge. Liverpool Street and Canary Wharf are usually under an hour. We confirm timing before we begin.
No. Replacing the battery does not erase storage. Photos, apps and accounts stay put. We still recommend a quick backup before any repair.
Yes — from current Pro models back through older iPhones and SE. We complete the post-repair system steps so battery health reporting works correctly.
Yes. Galaxy S, A and Z series, Google Pixel, OnePlus, and most major Android brands. Same free diagnosis, fixed pricing and warranty as our iPhone work.
A swollen battery should be treated as urgent. Stop charging, avoid pressing the back glass, and bring it in. We safely remove the cell and fit a replacement before it damages the screen or frame.
Usually yes. A £49–£79 battery often adds years of usable life versus buying a new phone. If we think it is not good value, we will say so at inspection.
Replaced batteries carry our 12-month warranty. If the cell develops a fault within a year, we rectify it free of charge under the warranty terms.
