SiGN iPhone 11 battery kit

Name: SiGN iPhone 11 battery kit
Brand: SiGN
SKU: sign-iphone-11
Price: 24.79 GBP
Availability: OutOfStock
Rating: 4 (25 reviews)

(25 reviews)

Replacement battery for the iPhone 11. Restore your device's original runtime when the battery gets tired.

£24.79

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Characteristics

Capacity: 3110 mAh
Compatibility: iPhone 11
Type: Lithium-ion
Use: Kit with fitting tools
Original runtime restored, iPhone 11

Detailed overview: SiGN iPhone 11 battery kit

This 3110 mAh replacement battery gives the iPhone 11 back the capacity it left the factory with. An oddity in the range: that is more than the iPhone 12 that succeeded it, a rare case of a newer generation being less well served.

The kit is complete: the battery, the disassembly tools (screwdriver, spudger, pick) and the adhesive strips for reassembly. Nothing else to order, beyond a little patience and a clear workspace.

The iPhone 11 is the oldest of the four generations we cover. Released in 2019, it statistically has the most charge cycles behind it: it is the model where a replacement is most often justified, and the one where the improvement is most striking.

The phone itself tells you when to act: Settings > Battery > Battery Health shows the remaining maximum capacity as a percentage. Below 80 %, runtime drops off sharply and iOS eventually displays a service message.

The same kit exists for the other generations: iPhone 12 battery kit, iPhone 13 battery kit and iPhone 14 battery kit. For a newer model, see our batteries for iPhone 15 battery and iPhone 16 battery.

Frequently asked questions: SiGN iPhone 11 battery kit

🔋 At what percentage should you replace an iPhone 11 battery?

Open Settings > Battery > Battery Health and look at the maximum capacity. Below 80 %, the phone no longer lasts a day and may throttle performance to avoid sudden shutdowns. On an iPhone 11 from 2019, that threshold has often been crossed long ago.

🔋 Why does the iPhone 11 have a bigger battery than the iPhone 12?

Because Apple slimmed the chassis with the 12: 7.4 mm thick against 8.3 mm for the 11. That thinness was paid for in capacity, which fell from 3110 to 2815 mAh. All else being equal, a healthy iPhone 11 therefore lasts slightly longer than an iPhone 12.

🔋 How much does an iPhone 11 battery replacement cost?

This kit is £24.79, tools and adhesives included. A repair shop bills its labour on top, which multiplies the invoice. The difference pays for the hour you will spend and the risk of a slip, so it is your call.

🔋 What should I do if my iPhone 11 battery swells?

Stop using and charging it immediately. A lithium battery that deforms presses against the screen and can unstick it: never pierce it, never bend it, and take it to a collection point for batteries and accumulators. Replacement becomes urgent.