Is your iPhone battery draining too fast, shutting off unexpectedly, or health showing below 80%? We replace iPhone batteries in North Finchley in under 30 minutes. All models from iPhone 6 to iPhone 15 Pro Max. Restore your phone to 100% battery health for a fraction of Apple's service cost.
Apple's lithium-ion batteries are designed to retain 80% capacity after around 500 charge cycles. In practice, most iPhone users reach this point within 18–24 months of regular use. Once battery health drops below 80%, you'll notice significantly faster drain, unexpected shutdowns, and iOS may enable "Performance Management" — deliberately throttling your CPU speed to prevent shutdowns. This can make your phone feel noticeably slower.
The good news: a battery replacement gives your iPhone a new lease of life. Customers regularly tell us their phone feels "like new again" after a battery swap. It's the single most cost-effective upgrade you can make to an ageing iPhone — far cheaper and less wasteful than buying a new device.
At Mobex in North Finchley, we replace iPhone batteries using high-quality cells that match Apple's original capacity ratings. After fitting, your iPhone's Settings app will show 100% battery health. The whole process takes under 30 minutes.
All prices include the battery, labour, and a 12-month warranty. Significantly cheaper than Apple's official service.
| iPhone Model | Battery Capacity | Time | Our Price |
|---|---|---|---|
| iPhone 6 / 6 Plus | 1810 / 2915 mAh | ~20 mins | Call us |
| iPhone 6S / 6S Plus | 1715 / 2750 mAh | ~20 mins | Call us |
| iPhone 7 / 7 Plus | 1960 / 2900 mAh | ~25 mins | Call us |
| iPhone 8 / 8 Plus | 1821 / 2691 mAh | ~25 mins | Call us |
| iPhone SE (2nd Gen) | 1821 mAh | ~25 mins | Call us |
| iPhone SE (3rd Gen) | 2018 mAh | ~25 mins | Call us |
| iPhone X | 2716 mAh | ~25 mins | Call us |
| iPhone XS / XS Max | 2658 / 3174 mAh | ~25 mins | Call us |
| iPhone XR | 2942 mAh | ~25 mins | Call us |
| iPhone 11 | 3110 mAh | ~30 mins | Call us |
| iPhone 11 Pro / Pro Max | 3046 / 3969 mAh | ~30 mins | Call us |
| iPhone 12 / 12 Mini | 2815 / 2227 mAh | ~30 mins | Call us |
| iPhone 12 Pro / Pro Max | 2815 / 3687 mAh | ~30 mins | Call us |
| iPhone 13 / 13 Mini | 3227 / 2406 mAh | ~30 mins | Call us |
| iPhone 13 Pro / Pro Max | 3095 / 4352 mAh | ~30 mins | Call us |
| iPhone 14 / 14 Plus | 3279 / 4323 mAh | ~30 mins | Call us |
| iPhone 14 Pro / Pro Max | 3200 / 4323 mAh | ~30 mins | Call us |
| iPhone 15 / 15 Plus | 3349 / 4383 mAh | ~30 mins | Call us |
| iPhone 15 Pro / Pro Max | 3274 / 4422 mAh | ~30 mins | Call us |
We're conveniently located in North Finchley, making it easy for residents of N12, N3 (Finchley Central), N20 (Whetstone), and surrounding areas to pop in for a quick battery swap on their lunch break or between errands.
Many of our battery replacement customers tell us they were on the verge of upgrading their phone — until they realised a battery replacement would give them 2–3 more years of use. We're strong advocates for repair over replacement: it saves you money and reduces electronic waste.
We also replace batteries in Samsung phones, iPads, and laptops — see our full services page for all battery replacement options.
"My iPhone 12 was down to 74% battery health and barely lasting till 2pm. Mobex replaced the battery in 25 minutes and now it lasts all day again. Wish I'd done it sooner — saved me hundreds on a new phone."
"Battery showed 100% health after replacement — exactly as advertised. Phone stopped randomly shutting off and performance management was removed. My iPhone 11 feels like a new phone again. Brilliant service."
"Very fair price, done in under 30 mins. Apple quoted me much more for the same job. The team were friendly and explained why performance was being throttled. Now running perfectly."