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How to Replace ZenFone 11 Battery

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ZenFone 11 Battery

Keep your IP68 seal: step-by-step ZenFone 11 battery replacement

If you’re looking to replace the battery in your ZenFone 11 without compromising its IP68 water‑ and dust‑resistance, you’re in the right place. This comprehensive tutorial walks you through every step from opening, swapping the battery, and then resealing. We guide you through this process while showcasing premium tools, genuine parts, and what makes ZenFone 11 stand out. Plus, learn how A‑Accessories brings you original Asus parts, fast shipping, and top‑notch service.


Catch us on our YouTube Channel for exclusive unboxings like this one! Featuring a substantial 5500 mAh battery, the Zenfone 11 is designed for extended use, with up to 26 hours of screen time. It also supports 65W wired and 15W wireless charging.

Repair, don't replace your ZenFone 11!

The ZenFone 11, with its sleek design, powerful performance, and IP68 waterproof rating, has become a favorite among savvy smartphone users. Ideal for outdoor enthusiasts, busy professionals, and on‑the‑go creators, it delivers sharp AMOLED screens, fast 5G connectivity, and long battery life. But even the best devices lose battery efficiency over time. That’s when a DIY battery replacement with genuine parts can breathe new life into your phone.

DIY repair makes sense

At A‑Accessories, we believe that self‑maintenance empowers users. Replacing your own battery is not only cost‑effective but also prolongs your device’s lifespan. With our top‑quality genuine Asus parts, including ZenFone 11 battery, precise FFC cables, and chargers, you gain convenience and confidence. With many years in business, exceptional customer service, and a 12‑month warranty on parts, our team supports your DIY journey every step of the way.

Zenfone 11

Preparation: what you’ll need

  • A high‑quality precision screwdriver set and spudgers
  • Heat gun or warming pad to soften adhesive
  • New ZenFone 11 battery replacement (genuine Asus part)
  • Replacement FFC cable (if needed)
  • Re‑sealing kit or IP68 adhesive strips
  • Magnetic mat or tray to organize screws

Need help? Open a support ticket with our expert team.

Step-by-step repair guide

1. Power down & warm the back

Shut off your ZenFone 11 completely. Use a heat gun (set to ~90 °C / ~200 °F) or warming pad to gently heat the rear glass. The goal is to soften adhesive without damaging internal components. Work in a well‑ventilated area and handle with care.

2. Open the rear cover

Use a thin plastic spudger to carefully pry around the edges. Take your time and inch your way around. If you hear any creaking or feel resistance, apply more heat before proceeding. Once the cover starts lifting, work your way around until it’s free. Place it aside safely.

3. Disconnect the battery & internal components

Use a magnetic tray for screws. Remove the phone's screws securing the battery bracket. You may also unplug the FFC cable, which connects the battery to the phone's motherboard. If the cable seems worn or damaged, replace it now with a new ZenFone 11 FFC cable from our store.

4. Remove and replace the battery

Asus Zenfone battery

Gently pry out the old battery—don’t bend it. Insert your new ZenFone 11 battery, aligning it in the same position. Reconnect the FFC cable and re‑install any screws or brackets you removed.

5. Re-seal the IP68 protection

This step is crucial for maintaining waterproof integrity. Use fresh IP68 adhesive strips or sealant recommended for Asus devices. Replace tape around the edges or apply sealant into the grooves. Ensure the seal is continuous and evenly applied. Let it cure briefly before closing.

6. Re-attach rear glass

Gently align the back glass with the chassis and press firmly around the edges. The new adhesive should bond securely. Some users prefer to clamp the phone for a few minutes to ensure a tight fit.

7. Test for waterproof integrity

After reassembly, perform a splash test. Expose the phone to light water mist (avoid full submersion). If any water enters the ports or inside the camera lenses, disassemble and check the seal again. Repeat until you’re confident the IP68 seal is effective.

8. Final power-up and validation

Power on your ZenFone 11 and check battery health and charge functionality. Download a battery‑monitoring app or check system diagnostics. The phone should reflect the new battery at full capacity and recharge smoothly.

Asus Zenfone 11

Why choose A‑Accessories for ZenFone repairs?

At A‑Accessories, we’ve been serving the Asus smartphone repair community for over 20 years. Here’s what sets us apart:

  • Genuine Asus parts for guaranteed compatibility and performance
  • Fast shipping across the U.S. and abroad
  • 12‑month warranty on all parts
  • Expert support via Zendesk and detailed guides
  • Responsive customer service team

Feel free to check a related guide, like how to Replace Your ZenFone 10 Screen, if you’re tackling multiple repairs: ZenFone 10 screen tutorial.

Helpful Extras: tools, chargers, cases & more

  • Precision tool kits tailored for Asus smartphones
  • Fast‑charging ZenFone charger certified for your device
  • Stylish impact‑resistant cases to protect your device post‑repair
  • Explore gaming performance with accessories for ROG devices: ROG Ally X console accessories
Zenfone 11 DevilCase
The Devil Case Guardian Ultra-Mag Lite case for Zenfone 11 is compatible with magnetic ring accessories and features diamond-cut aluminum alloy buttons.

The ZenFone 11 is renowned not just for performance, but for its user‑accessible repair design—making it more DIY‑friendly than many smartphones today. Asus’s focus on modular parts and serviceability reflects its motto, “In Search of Incredible.” With its IP68 rating, Gorilla Glass protection, and AI‑powered cameras, it’s a device built for creators and adventurers alike.

Replacing your ZenFone’s battery protects your investment, maintains the seal, and keeps your phone performing at peak capacity. With this step‑by‑step guide, premium tools and parts from A‑Accessories, and excellent support, you’re well‑equipped to handle the task confidently.

For any questions or to request personal assistance, open a support request. Happy repairing—and cheers to many more years with your ZenFone 11!