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Can an ASUS Laptop Battery Be Replaced?

Yes—most ASUS laptops can have their batteries replaced. Some models use an external clip-in pack (tool-free), while many modern models use an internal battery secured with screws and a cable. Below are compatible ASUS replacements you can order, plus a practical guide to check compatibility and do the job safely.


ASUS B21N1329 30Wh replacement battery

ASUS B21N1329 — 30Wh

  • Capacity: 30Wh
  • Fit class: Thin-and-light ultrabooks

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ASUS A41-X550A 44Wh replacement battery

ASUS A41-X550A — 44Wh

  • Capacity: 44Wh
  • Fit class: Mainstream 15.6″ models

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ASUS C31N1912 42Wh replacement battery

ASUS C31N1912 — 42Wh

  • Capacity: 42Wh
  • Fit class: Modern 13–14″ notebooks

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Browse all ASUS batteries. Search by laptop model (e.g., “X550A”, “TUF FX505”) or by the code printed on your old pack (e.g., “A41-X550A”, “B21N1329”, “C31N1912”).

Which ASUS Batteries Are Replaceable?

  • External/clip-in batteries: Older ASUS laptops often use a removable pack that slides and locks—no tools needed. Replacement is trivial.
  • Internal batteries (most modern models): The battery sits inside the chassis. You’ll remove the bottom cover, disconnect the battery cable, and swap the pack. It’s a moderate DIY job with the right screwdriver and care.

If your laptop powers on and works well aside from short runtime or sudden shutdowns, a replacement battery is almost always feasible and cost-effective.

How to Identify the Correct Battery

  1. By laptop model: Check the label on the bottom cover or in System Information (e.g., “X550A”, “Vivobook 14”, “TUF FX505”).
  2. By battery code: Open the back (if comfortable) or search your old order/repair docs for a code like A41-X550A, B21N1329, C31N1912.
  3. Match voltage & connector: Your replacement must match the voltage and connector style of the original.

Tools & Time Required

  • Time: 10–30 minutes (external) or 20–60 minutes (internal), depending on model complexity.
  • Tools: Small Phillips and/or Torx screwdrivers, plastic spudger or guitar pick, tweezers (optional), anti-static precautions.
  • Workspace: Clean, well-lit, non-conductive surface with a small container for screws.

Step-by-Step Overview (Internal Batteries)

  1. Shut down the laptop and unplug the charger.
  2. Remove bottom screws; gently release clips with a plastic tool.
  3. Disconnect the battery cable from the motherboard (note routing).
  4. Unscrew and remove the old battery; avoid bending or puncturing cells.
  5. Place the new battery, route cables exactly like original, and reconnect.
  6. Reassemble the bottom cover; power on and verify charging.
  7. First cycle: charge to 100%, then use down to ~10–20% and recharge. (No repeated deep discharges needed.)

Warranty & Safety Notes

  • Warranty: Opening the chassis may affect coverage depending on region and policy. If in doubt, check your warranty terms first.
  • Swollen batteries: If the trackpad is raised or the case is bulging, stop using and replace immediately—do not charge or compress a swollen pack.
  • Recycling: Dispose of the old battery via an e-waste facility; never put lithium cells in household waste.

DIY vs. Professional Service

If you’re uncomfortable opening electronics, hire a technician. Labor is usually modest compared to the price of a new laptop, and you still gain the benefits of a fresh battery.

FAQ

Can I upgrade to a higher-capacity battery?

Only if a higher-Wh variant exists for your exact model and the chassis has space. Always match voltage and connector; capacity (Wh) can vary when a compatible option is available.

How do I know my battery actually needs replacing?

Run powercfg /batteryreport (Windows) and compare Full Charge Capacity vs. Design Capacity. If wear is >25–30% or you see early shutdowns, swelling, or unusable runtime, it’s time to replace.

Will a new battery fix performance issues?

It can prevent surprise shutdowns and power-related throttling on battery, but it won’t fix unrelated issues like a failing SSD or insufficient RAM.

Where can I buy a compatible ASUS battery?

Use your laptop model or the code on the old pack to find a match here: ASUS battery listings. Popular options include B21N1329 (30Wh), A41-X550A (44Wh), and C31N1912 (42Wh).

Bottom Line

Yes—ASUS laptop batteries are replaceable. If your system still meets your needs, swapping in a compatible pack is an easy, budget-friendly way to restore reliable unplugged time.

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