iPhone 7 Plus & 8 Plus Battery Replacement Service
If your iPhone 7 or 8 series device is struggling to hold a charge, draining rapidly, or shutting down at 20%, there is no need to panic. Lithium-ion batteries have a finite lifespan and typically begin to degrade after 500 charge cycles. At atlantis, we specialise in professional battery repairs for legacy Apple devices. Whether you utilise our UK-wide postal repair service or visit our Canterbury workshop in Kent, we provide premium battery swaps for a fixed £35.00 fee.
Models Support List
Our senior engineering team provide battery repairs for all 7 and 8 Plus variants:
- iPhone 7 Plus (A1661, A1784, A1785)
- iPhone 8 Plus (A1864, A1897, A1898)
Looking for the standard models? See our iPhone 7/8 Battery Repair page.
Why Choose Us?
- Fixed Price: £35.00 covers everything—parts, labour, and return postage.
- Premium Cells: We use Grade-A batteries that meet or exceed original capacity.
- 15 Years Experience: Expert technicians who have fixed thousands of iPhones.
- 12-Month Warranty: Fully covered against hardware failure.
Meet the Atlantis Senior Engineering Team
Replacing an iPhone Plus battery requires precision. Unlike smaller models, the Plus series has larger cells with stronger adhesive. Our senior engineers use heat-softened extraction methods to prevent cell puncture and ensure a safe removal. We don't just swap the battery; we clean the internal chassis and reseal the device to professional standards, ensuring your iPhone 7 Plus or 8 Plus is returned in peak condition.
Technical Details
Our battery replacements use high-density Lithium-ion Polymer technology:
- Cycle Count: Zero-cycle, brand-new cells.
- Capacity: Factory-standard mAh matching the 7 Plus and 8 Plus specs.
- Adhesive: Tesa-grade pull tabs used for secure fitting.
- Efficiency: Provides typically 500+ full charge-discharge cycles.
Process & Protection
- Health Diagnostic: Verifying cycle count and peak performance capability.
- Safe Extraction: Using heat-softened adhesive removal to prevent cell puncture.
- Internal Maintenance: Clearing dust and debris from the internal frame.
- Premium Installation: Fitting a Grade-A high-capacity cell with new adhesive seals.
- Calibration: Performing a full charge-discharge cycle test before return.
Common Symptoms Fixed
- Rapid Drain: Battery percentage drops significantly during normal use.
- Sudden Power Off: Device shuts down while still showing 10-30% charge.
- System Throttling: Slow performance due to battery peak power failure.
- Swollen Battery: The screen is being pushed out from the frame (Fire Hazard).
For more details on battery health, visit Apple’s official guide.
Verified UK Customer Reviews
⭐ "Competitive prices"
"Easily the best in Canterbury. Probably Kent. Always try to help and definitely more than competitive prices. Brought my iPhone, pc and laptop to them... can't recommend enough." — Google Review
⭐ "Excellent Battery Life"
"Replaced my iPhone 8 Plus battery. My phone now lasts all day again. Fast service in Canterbury shop." — Tom W.
⭐ "Great Postal Service"
"Used the mail-in service from London. Very easy process and my phone was back within 3 days." — Sarah L.
Premium UK-Wide Tracked Delivery
- 1. Free Label: Receive a pre-paid Royal Mail tracked label via email after checkout.
- 2. Safe Shipping: Drop your securely packed iPhone at any UK Post Office.
- 3. Fast Return: Repaired in our workshop and returned via tracked delivery, usually within 3-5 working days.
Questions and Answers
Will I lose my data? No. Battery repairs are hardware-focused and do not involve software resets. However, we always recommend a cloud backup.
How much does it cost? The fixed price is £35.00, which includes the premium cell, labour, and return shipping.
Will my iPhone be faster? Yes. Apple devices often throttle the processor when a battery is degraded. A new battery removes this limit.
People Also Ask (Q&A)
When should I replace my iPhone 7 Plus battery? If your battery health is below 80% or you experience sudden shutdowns, it's time for a replacement.
How long does the repair take? In-store is usually 30-60 minutes. Postal is typically 3-5 working days total.
Where can I get an iPhone Plus battery fixed in the UK? Atlantis offers a nationwide service with free tracked shipping. You can also visit our Canterbury store.
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