SiGN iPhone 13 battery kit

Replacement battery for the iPhone 13. Restore your device's original runtime when the battery gets tired.

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Characteristics

Capacity: 3227 mAh
Compatibility: iPhone 13
Type: Lithium-ion
Use: Kit with fitting tools
Original runtime restored, iPhone 13

Detailed overview: SiGN iPhone 13 battery kit

This 3227 mAh replacement battery gives the iPhone 13 back its original capacity, close to 15 % more than the iPhone 12: the largest generation-to-generation gain across the four models we cover.

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 13 is also the last of the series to keep the classic internal architecture, the one where you open the device from the screen. The redesign that makes disassembly simpler only arrives with the iPhone 14. So plan to work from the front, without straining the screen cable while it is still connected.

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 11 battery kit, iPhone 12 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 13 battery kit

🔋 At what percentage should you replace an iPhone 13 battery?

Check the maximum capacity in Settings > Battery > Battery Health. The 80 % threshold is the usual marker: below it, runtime falls and iOS may cap performance peaks. A heavily used iPhone 13 gets there around three or four years in.

🔋 How much bigger is the iPhone 13 battery than the iPhone 12's?

From 2815 to 3227 mAh, close to 15 % more capacity. It is the biggest jump in the series: Apple reversed the 12's slimming cure and thickened the device slightly to fit that battery.

🔋 Can you replace an iPhone 13 battery yourself?

Yes, with method. The iPhone 13 opens from the screen, so you need to warm the edges gently, lift without forcing and work with the screen open. The kit supplies the tools and adhesives; allow a good hour for a first attempt and follow a guide written for this exact model.

🔋 How much does an iPhone 13 battery replacement cost?

This kit is £25.64, disassembly tools and adhesive strips included. A workshop will charge for the part plus its time, hence the sizeable gap on the final invoice.