Uploaded August 2026 | Updated September 2026, 2 weeks ago
Replace your iPhone 16 battery, fix fast battery drain and Service warnings, calibrate it with Repair Assistant, and install new sealing adhesive.
Buy tools and battery on AMAZON:
Screwdriver Set: hfixt.com/spro
Pro Toolkit: hfixt.com/tool
Magnetic Mat: hfixt.com/mat
Tweezers: hfixt.com/tzrs
Adhesive tape: amzn.to/4wywCTC
Battery adhesive: amzn.to/4g6Pi8k
Battery: amzn.to/3TZDEDF
AliExpress:
Screwdriver Set: hfixt.com/alis
Opening Tool Kit: hfixt.com/alit
Magnetic Mat: hfixt.com/amat
Tweezers set: hfixt.com/altz
Adhesive tape: https://s.click.aliexpress.com/e/_c3lbXo1v
Battery adhesive: https://s.click.aliexpress.com/e/_c2yKhcLN
Battery link1: https://s.click.aliexpress.com/e/_c3TE3udV
Battery link2: https://s.click.aliexpress.com/e/_c4cdXJsP
đź“Ś*Useful links*
Best Screwdriver Set: youtu.be/fdtNem4rDDM
Repair Tools & Safety Tips: youtu.be/Sp7PhrKV-vQ
More DIY repair guides: how-fixit.com
Genuine Apple parts: selfservicerepair.com
📱Follow us for more tech tips and guides!
TikTok: tiktok.com/@howfixit
Instagram: instagram.com/howfixit
Facebook: facebook.com/HowFixit
X: https://x.com/HowFixit
*Description*
Learn how to replace the iPhone 16 battery step by step, calibrate the replacement battery with Apple Repair Assistant, and install new back-glass sealing adhesive.
This repair may help if your iPhone 16 battery drains quickly, no longer lasts through the day, has dropped below 80% Maximum Capacity, shuts down unexpectedly, or displays a Battery Health Service warning.
The guide covers opening the back glass safely, disconnecting the battery, releasing the electrically bonded battery adhesive with a 9-volt battery, installing the replacement battery, testing it, and completing Repair Assistant calibration through Parts & Service History. You’ll also learn how to remove the old perimeter adhesive and apply a new waterproof sealing gasket. Installing new sealing adhesive helps restore protection against dust and moisture.
Subscribe to HowFixit for more iPhone repair, disassembly, and troubleshooting guides.
🎬 Timecodes:
00:00 iPhone 16 Battery Replacement
00:26 Required Repair Tools
01:13 Power Off and Remove Pentalobe Screws
01:26 Heat and Open the Back Glass
03:15 Disconnect the Battery and Back Glass
03:46 How the Electrical Battery Adhesive Works
03:54 Prepare the 9-Volt Battery
04:22 Electrically Release the Battery Adhesive
04:41 Remove the iPhone 16 Battery
04:55 Clean the Battery Mounting Area
05:03 Install the Replacement Battery
05:35 Reconnect the Back Glass and Battery
05:46 Test the New Battery
05:58 Repair Assistant Battery Calibration
06:35 Remove the Old Sealing Adhesive
07:50 Install New Back-Glass Adhesive
08:09 Reinstall the Back Glass
08:30 Seal the iPhone and Install Pentalobe Screws
08:55 Final Recommendations
🌟FAQ:
âť“Question: When should the iPhone 16 battery be replaced?
✔️Answer: Consider replacement if battery life has significantly decreased, Maximum Capacity is below 80%, Battery Health displays a Service warning, or the phone shuts down unexpectedly.
âť“Question: Can I remove the iPhone 16 battery without a 9-volt battery?
✔️Answer: Apple’s electrical adhesive release method requires a suitable low-voltage power source. Trying to pry out a bonded lithium-ion battery can damage or puncture it.
âť“Question: Does a replacement iPhone 16 battery require calibration?
✔️Answer: A compatible replacement battery may need to be configured through Repair Assistant so Battery Health and Parts & Service History display correctly.
âť“Question: Will replacing the sealing adhesive restore factory water resistance?
✔️Answer: New adhesive helps restore protection against dust and moisture, but factory-rated water resistance cannot be guaranteed after the phone has been opened.
AFFILIATE PROGRAM
As an Amazon Associate, I earn from qualifying purchases.
#iphone16 #iphonerepair #diy #howfixit
Replace your iPhone 16 battery, fix fast battery drain and Service warnings, calibrate it with Repair Assistant, and install new sealing adhesive.
Buy tools and battery on AMAZON:
Screwdriver Set: hfixt.com/spro
Pro Toolkit: hfixt.com/tool
Magnetic Mat: hfixt.com/mat
Tweezers: hfixt.com/tzrs
Adhesive tape: amzn.to/4wywCTC
Battery adhesive: amzn.to/4g6Pi8k
Battery: amzn.to/3TZDEDF
AliExpress:
Screwdriver Set: hfixt.com/alis
Opening Tool Kit: hfixt.com/alit
Magnetic Mat: hfixt.com/amat
Tweezers set: hfixt.com/altz
Adhesive tape: https://s.click.aliexpress.com/e/_c3lbXo1v
Battery adhesive: https://s.click.aliexpress.com/e/_c2yKhcLN
Battery link1: https://s.click.aliexpress.com/e/_c3TE3udV
Battery link2: https://s.click.aliexpress.com/e/_c4cdXJsP
đź“Ś*Useful links*
Best Screwdriver Set: youtu.be/fdtNem4rDDM
Repair Tools & Safety Tips: youtu.be/Sp7PhrKV-vQ
More DIY repair guides: how-fixit.com
Genuine Apple parts: selfservicerepair.com
📱Follow us for more tech tips and guides!
TikTok: tiktok.com/@howfixit
Instagram: instagram.com/howfixit
Facebook: facebook.com/HowFixit
X: https://x.com/HowFixit
*Description*
Learn how to replace the iPhone 16 battery step by step, calibrate the replacement battery with Apple Repair Assistant, and install new back-glass sealing adhesive.
This repair may help if your iPhone 16 battery drains quickly, no longer lasts through the day, has dropped below 80% Maximum Capacity, shuts down unexpectedly, or displays a Battery Health Service warning.
The guide covers opening the back glass safely, disconnecting the battery, releasing the electrically bonded battery adhesive with a 9-volt battery, installing the replacement battery, testing it, and completing Repair Assistant calibration through Parts & Service History. You’ll also learn how to remove the old perimeter adhesive and apply a new waterproof sealing gasket. Installing new sealing adhesive helps restore protection against dust and moisture.
Subscribe to HowFixit for more iPhone repair, disassembly, and troubleshooting guides.
🎬 Timecodes:
00:00 iPhone 16 Battery Replacement
00:26 Required Repair Tools
01:13 Power Off and Remove Pentalobe Screws
01:26 Heat and Open the Back Glass
03:15 Disconnect the Battery and Back Glass
03:46 How the Electrical Battery Adhesive Works
03:54 Prepare the 9-Volt Battery
04:22 Electrically Release the Battery Adhesive
04:41 Remove the iPhone 16 Battery
04:55 Clean the Battery Mounting Area
05:03 Install the Replacement Battery
05:35 Reconnect the Back Glass and Battery
05:46 Test the New Battery
05:58 Repair Assistant Battery Calibration
06:35 Remove the Old Sealing Adhesive
07:50 Install New Back-Glass Adhesive
08:09 Reinstall the Back Glass
08:30 Seal the iPhone and Install Pentalobe Screws
08:55 Final Recommendations
🌟FAQ:
âť“Question: When should the iPhone 16 battery be replaced?
✔️Answer: Consider replacement if battery life has significantly decreased, Maximum Capacity is below 80%, Battery Health displays a Service warning, or the phone shuts down unexpectedly.
âť“Question: Can I remove the iPhone 16 battery without a 9-volt battery?
✔️Answer: Apple’s electrical adhesive release method requires a suitable low-voltage power source. Trying to pry out a bonded lithium-ion battery can damage or puncture it.
âť“Question: Does a replacement iPhone 16 battery require calibration?
✔️Answer: A compatible replacement battery may need to be configured through Repair Assistant so Battery Health and Parts & Service History display correctly.
âť“Question: Will replacing the sealing adhesive restore factory water resistance?
✔️Answer: New adhesive helps restore protection against dust and moisture, but factory-rated water resistance cannot be guaranteed after the phone has been opened.
AFFILIATE PROGRAM
As an Amazon Associate, I earn from qualifying purchases.
#iphone16 #iphonerepair #diy #howfixit
