A battery that is past its best can cause odd behaviour on a Pixel 3 XL, from unexpected restarts to heavy standby drain. Replacing the battery restores stability.
Common report: it shows 25 percent then suddenly shuts down.
Turnaround: Same day service is available for most repairs, often within 1 to 2 hours.
Service options: London walk-in and UK mail-in.
Warranty: 6 months on batteries.
Back to Google Pixel 3 XL repairs
Book your repair
Choose this repair and checkout online, then bring your device in. Walk ins are welcome. For mail in repairs, place your order first so we can track everything from day one.
Common battery symptoms for Pixel 3 XL
- Swollen battery signs (stop using it and get it checked)
- Battery health warnings or poor standby time
- Sudden drops in percentage
- Big overnight drain when the phone is idle
- Device shutting down in colder weather
Safety note: A swollen battery can press on the screen or back cover. If anything looks raised, avoid charging and book it in.
Why choose Square Repair?
- Fast turnaround options
- Battery replacement does not affect your data
- Clean workmanship with dust control
- Post repair charging and power tests
- Friendly, practical advice
- Pixel-specific adhesives and careful resealing
How the repair works
- Quick health check and fault confirmation
- Safe opening and battery removal
- Internal clean and preparation
- New battery installation with fresh adhesive
- Charging and power draw testing
- Final quality control checks
Tip: If your Pixel 3 XL still drains fast after a battery change, we can check for background drain, charging issues, or a failing port.
Helpful links
Frequently Asked Questions
How do I know my Google Pixel 3 XL needs a new battery?
The usual signs are a battery that drains far faster than it used to, unexpected shutdowns even when there is charge left, and the device only running reliably while plugged in. You may also see sudden percentage drops, the device running warm, or slow charging. Your device's battery or device-care settings will often show declining capacity. If the back or screen is lifting, treat it as urgent, as that can mean the battery has swollen.
Check current turnaround and reserve a slot on our booking page.
How long does a Google Pixel 3 XL battery replacement take?
Most Google Pixel 3 XL battery replacements are completed the same day when the part is in stock, often within a couple of hours of dropping in near Liverpool Street Station in London. We inspect the device first and confirm the timeframe before starting any work. Mail-in customers can post the device from anywhere in the UK and we turn it around as quickly as the post allows.
Not sure? It is worth booking a quick diagnosis first.
What battery do you fit in the Google Pixel 3 XL?
We fit a quality replacement battery matched to the Google Pixel 3 XL and test charging, power stability and capacity before return. Replacing the battery restores the runtime the device had when it was newer and resolves shutdowns caused by a worn cell. Every battery replacement carries a 6-month warranty.
See exactly how we work on our how we work page.
Do I lose my data during a battery replacement?
No. A Google Pixel 3 XL battery replacement is a hardware-only repair, so your photos, apps and settings stay exactly as they are. We still recommend a recent backup beforehand as good practice, in case the device has damage beyond the battery. Nothing about the battery procedure touches your storage.
Browse all Google Pixel 3 XL repairs while you decide.
My battery looks swollen, what should I do?
A swollen battery is a safety issue and should be dealt with promptly. Stop charging the Google Pixel 3 XL, avoid pressing on the bulge, and arrange a replacement as soon as you can. Swelling can lift the screen or back panel and, left too long, can damage nearby parts. Bring it in or post it to us and we will replace the battery and check the surrounding components.
It is also worth checking your Google Pixel 3 XL screen repair.
What warranty comes with the Google Pixel 3 XL battery replacement?
Every Google Pixel 3 XL battery replacement includes a 6-month warranty, which covers the replacement battery and our fitting. If a warranty-covered fault appears within that period, we put it right at no extra cost. The warranty does not cover fresh liquid exposure or new accidental damage, which we always explain before you book.
Still unsure? get in touch, or explore Google Pixel 3 XL charging port repair and we will help.