100% to 90% battery health
Generally considered normal.
Most users won't notice significant battery-related issues.
iPhone Battery Replacement Hamilton
Is Your iPhone Battery Not Lasting Like It Used To?
If your iPhone battery drains quickly, struggles to last the day, shuts down unexpectedly, or shows a low battery health percentage, a battery replacement may be the most cost-effective way to extend the life of your device.
What is wrong with your battery?
Draining quickly
Struggles to last the day, or you need more than one charge a day.
From $80
Shutting down unexpectedly
Turns off even though it still shows battery remaining.
From $80
Battery health or Service message
Battery health below 80%, or a message saying battery service is recommended.
From $80
Swollen battery
Screen lifting or the back pushing out. Stop charging it and bring it in.
From $80
Not sure it is the battery?
Slow charging, heat or shutdowns can have other causes. We test first and explain your options and the cost before any work starts.
Prices vary by model and battery availability. We confirm your price before we start. 90-day repair warranty.
See battery prices by iPhone model
Starting price and turnaround
| iPhone model | Battery from | Turnaround |
|---|---|---|
| Newer Models | From $150 | Parts dependent |
| iPhone 16 Series | From $150 | 1–2 days |
| iPhone 15 Series | From $140 | 1–2 days |
| iPhone 14 Series | From $135 | Same day |
| iPhone 13 Series | From $129 | Same day |
| iPhone 12 Series | From $119 | Same day |
| iPhone 11 Series | From $109 | Same day |
| iPhone X Series | From $99 | Same day |
| iPhone 8 Series | From $80 | Same day |
| iPhone SE Series | From $80 | Same day |
The price depends on: your iPhone model and battery availability.
Need an exact quote? Contact us with your iPhone model.
Prices are a guide only and may vary depending on the model and the condition of the device. 90-day repair warranty.
How Do You Know If Your iPhone Battery Needs Replacing?
The easiest place to start is battery health. On most iPhones, you can check this by going to:
Settings → Battery → Battery Health & Charging
Battery health shows how much of the battery's original capacity remains.
89% to 80% battery health
Many users begin noticing:
- Reduced battery life
- More frequent charging
- Increased battery drain during heavy use
The phone will still function normally but may no longer comfortably last a full day.
Below 80% battery health
Worth considering a replacementThis is typically the point where battery replacement becomes worth considering.
Common symptoms include:
- Poor battery life
- Unexpected shutdowns
- Reduced performance
- Higher heat generation
- Service warnings
Is It Worth Replacing An iPhone Battery?
In many cases, yes. One of the most common misconceptions is that a phone with poor battery life automatically needs replacing. Often, a battery replacement can extend the useful life of an iPhone by several more years.
Battery replacement is usually worthwhile when:
- The phone still does everything you need
- Battery health is below 80%
- The repair cost is significantly lower than replacement
- The phone is otherwise in good condition
- You want to avoid transferring data to a new device
A replacement phone may be worth considering when:
- Multiple major repairs are required
- The device no longer meets your needs
- Storage capacity is insufficient
- The phone has significant additional damage
If a replacement phone is the better option, we'll tell you. We also offer refurbished alternatives when appropriate.
Ask us about your battery healthWhy Choose Regen Computers for iPhone Battery Replacements?
Rather than automatically recommending a repair, we take a diagnostics-first approach to help determine whether a battery replacement is worthwhile for your device. When a battery replacement makes sense, we'll explain your options and carry out the repair using quality replacement parts.
- Battery health explainedWe show you what your percentage means.
- Honest repair adviceWe tell you if a replacement phone makes more sense.
- Diagnostics firstWe check charging and signs of swelling before we start.
- Quality replacement batteriesTested after fitting, before you collect.
- 90-day warrantyOn the repair work and the parts we fit.
Recent iPhone Battery Replacements
iPhone 11
- Issue
- Battery health at 76%.
- Repair
- Battery replacement.
- Result
- Significantly improved daily battery life.
iPhone 12
- Issue
- Battery draining before the end of the day.
- Diagnosis
- Battery degradation confirmed.
- Repair
- Battery replacement.
- Result
- Improved battery performance and runtime.
iPhone XR
- Issue
- Unexpected shutdowns during normal use.
- Diagnosis
- Worn battery.
- Repair
- Battery replacement.
- Result
- Stable operation restored.
Other iPhone Repairs
More about our iPhone battery replacements
Common Signs Your Battery May Need Replacing
6 common signs
Battery Draining Quickly
One of the most common indicators of a worn battery.
Unexpected Shutdowns
The phone turns off despite showing remaining battery percentage.
Battery Health Below 80%
A common sign that battery performance has declined.
Excessive Heat
A degraded battery can sometimes contribute to overheating.
Multiple Charges Per Day
If you're constantly looking for a charger, the battery may be nearing the end of its useful life.
Battery Service Warning
Some iPhones will display a message indicating battery servicing is recommended.
Not sure it is the battery? Book a diagnosis and we will check before any work starts.
What Happens During An iPhone Battery Replacement?
Battery Assessment
We check:
- Battery health
- Charging performance
- Device condition
- Signs of battery swelling
Battery Replacement
The worn battery is removed and replaced with a quality replacement battery.
Testing
We verify:
- Charging functionality
- Battery recognition
- General device operation
- Performance after installation
Final Inspection
Every device receives a final quality check before collection.
Serving Hamilton and Waikato
Regen Computers provides iPhone battery replacements from our Hamilton workshop and supports customers throughout the wider Waikato region.
We regularly help customers from:
- Hamilton
- Frankton
- Rototuna
- Te Rapa
- Cambridge
- Morrinsville
- Te Awamutu
Whether your battery is draining quickly, showing low battery health, or you're unsure if a replacement is worthwhile, we're happy to help.
Visit our workshop
Regen Computers
4 Devon Road, Frankton
Hamilton, New Zealand
90-day repair warranty · Rated 4.7★ from 200+ Google reviews
Quick Facts
- Business
- Regen Computers
- Location
- 4 Devon Road, Frankton, Hamilton, New Zealand
- Service area
- Hamilton, Frankton, Waikato
- Primary service
- iPhone battery replacements
- Warranty
- 90 days
- Turnaround
- Many battery replacements completed the same day
- Approach
- Diagnostics-first repairs with honest recommendations
- Related services
- iPhone screen repairs, charging port repairs, diagnostics and refurbished devices
Not sure if your battery needs replacing? Ask us and we'll check your battery health before any work starts.
iPhone Battery Replacement FAQs
It depends on your iPhone model. Battery replacements start from $80 for the iPhone SE and iPhone 8 series, $99 for the iPhone X series, $109 for the iPhone 11 series, $119 for the iPhone 12 series, $129 for the iPhone 13 series, $135 for the iPhone 14 series, $140 for the iPhone 15 series and $150 for the iPhone 16 series. We confirm your price before any work starts.
Most users begin considering replacement once battery health drops below 80%, especially if battery life has become noticeably worse.
If the device still meets your needs and the repair cost is significantly lower than buying a replacement phone, a battery replacement is often excellent value.
Many common iPhone battery replacements can be completed the same day when parts are available. The iPhone 15 and iPhone 16 series usually take 1 to 2 days.
Battery replacements do not normally affect personal data, although backing up your device beforehand is always recommended.
Yes. Eligible battery replacements completed by Regen Computers are backed by a 90-day warranty covering workmanship and qualifying replacement parts.
iPhone Models We Commonly Replace Batteries In
Modern iPhone Models
- iPhone 17 Series
- iPhone 16 Series
- iPhone 15 Series
- iPhone 14 Series
- iPhone 13 Series
- iPhone 12 Series
- iPhone 11 Series
Older Models
- iPhone SE
- iPhone XS
- iPhone XR
- iPhone X
- iPhone 8
Subject to parts availability. Not sure about your model? Ask us.
Who Is This Service Suitable For?
This service is commonly recommended for:
- Battery health below 80%
- Poor battery life
- Unexpected shutdowns
- Excessive battery drain
- Battery service warnings
- Phones requiring multiple charges per day
- Customers wanting to extend the life of their iPhone
Get Your iPhone Battery Replaced
Whether your battery is draining quickly, showing low battery health, or you're simply wondering if an iPhone battery replacement is worthwhile, we're happy to help.
- Battery health checks
- Honest repair advice
- Many repairs same day
- Quality replacement batteries
- 90-day warranty
- Hamilton-based repair specialists
Contact Regen Computers today for an iPhone battery replacement quote or battery health assessment.