iPhone 11 Battery Replacement: Buy Now From £8.99 (UK Stock)

If your iPhone 11 dies before the end of the day, shuts down suddenly at 20% or 30%, or shows "Battery Health" below 80% in Settings, a replacement battery from £8.99 will fix it. Genuine-quality, UK-stocked, and ready to ship today — buy directly below.

On this page

• Shop iPhone 11 replacement batteries
• Signs your iPhone 11 battery needs replacing
• Why replace the battery instead of the whole phone
• DIY vs professional fitting
• FAQ

Shop iPhone 11 replacement batteries

🛒 Buy iPhone 11 Battery – £8.99

🛒 Buy iPhone 11 Pro Max Battery – £16.89

Looking for iPhone 11 Pro specifically? It isn't listed as a separate part yet — contact us and we'll confirm sourcing for you.

Signs your iPhone 11 battery needs replacing

• Battery Health below 80% (Settings > Battery > Battery Health & Charging) — Apple's own threshold for "significantly degraded."
• Sudden shutdowns at 20–30% charge — a classic sign the battery can no longer deliver peak current under load.
• The phone gets noticeably warm during normal use or while charging.
• A visibly swollen back panel — stop using the phone immediately and replace the battery; a swollen lithium battery is a genuine safety risk, not just a performance issue.
• Charging past 100% overnight barely lasts the morning — a strong signal of degraded cell capacity, not a software issue.

Why replace the battery instead of the whole phone

An iPhone 11 with a fresh battery, running current iOS, is still a fully capable phone for calls, browsing, photos, and most apps. A £8.99–£16.89 battery is a fraction of the cost of a replacement phone, and it's the single most effective fix for "my iPhone doesn't last the day anymore" — a battery is a wear part, not a sign the whole device is failing.

DIY vs professional fitting

iPhone 11 battery replacement is one of the more approachable DIY repairs in the current iPhone range — screws and clips rather than heavy adhesive on most of the assembly, though the battery itself is glued in with adhesive strips designed to release with a firm, steady pull. If you're not confident opening the phone yourself, any local independent repairer can fit the part same-day; ask for a workmanship warranty on top of the part.

FAQ

How do I check my iPhone 11's battery health?

Settings > Battery > Battery Health & Charging. Apple considers anything below 80% of original capacity as significantly degraded.

Will a new battery make my iPhone 11 feel new again?

For anyone whose main complaint is battery life or unexpected shutdowns, yes — it resolves the single most common performance complaint on a 11-generation iPhone.

Is it safe to replace the battery myself?

Yes, with a proper opening kit and care around the battery adhesive strips. If in doubt, a professional repairer will fit it same-day.

Does a third-party battery affect anything else on the phone?

No — battery replacement doesn't affect cellular, Wi-Fi, camera, or Face ID function. iOS may show a "genuine Apple part" service message under Battery Health, which is informational only.

Next steps

Buy your iPhone 11 battery or iPhone 11 Pro Max battery now, dispatched from our UK stock. Got a newer iPhone? See our iPhone 12 battery guide.