We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular lithium-ion laptop battery with label showing 10.8V 4400mAh

Dr. Battery

Dr. Battery A42-U53 10.8V 4400mAh laptop battery

SKU CH-NCM5-2PPRC

Replacement lithium-ion battery for compatible Asus U-series laptops, 10.8V 4400mAh with built-in protection circuits

  • ColorBlack
  • TypeBattery
  • CompatibilityAsus: U33 Series, U33J, U33Jc, U33Jc-A1, U33Jc-RX044V, U33Jc
  • Battery TypeLithium-Ion
  • Battery Voltage10.8V
  • Battery Capacity4400 mAh
  • Restores laptop runtime with 4400 mAh lithium-ion cells
  • Safe operation via short-circuit, overheat and overload protections
  • Fits Asus U33, U42, U43, U52 and U53 series models
  • Replaces original Asus A31-U53, A32-U53, A41-U53 and A42-U53 packs
  • Ready to use as a brand-new 10.8 V replacement battery

Replacement battery for Asus U33 U42 U43 U52 U53

The Dr. Battery A42-U53 is a 10.8V 4400mAh lithium-ion pack built to replace original Asus batteries A31-U53 A32-U53 A41-U53 A42-U53. It fits a long list of Asus U-series models including U33J U42F U43Jc U53SD and many variants. The pack restores mobile runtime for owners of those notebooks.

Simple swap with built-in protection

The battery slides into the standard compartment on the bottom of compatible Asus laptops and locks with the existing latch. No tools or soldering are required. The unit includes short-circuit overheat and overload safeguards. The most common issue is ordering the wrong voltage or part number so verify the label on your old battery first.

Check model and voltage before ordering

Confirm your laptop appears in the supported Asus U33 U42 U43 U52 U53 series list. Locate the original battery sticker and match the part number to A31-U53 A32-U53 A41-U53 or A42-U53. Ensure the printed voltage reads 10.8V. If your model or voltage differs this pack will not fit or work correctly.

Highlights

  • Restores laptop runtime with 4400 mAh lithium-ion cells
  • Safe operation via short-circuit, overheat and overload protections
  • Fits Asus U33, U42, U43, U52 and U53 series models
  • Replaces original Asus A31-U53, A32-U53, A41-U53 and A42-U53 packs
  • Ready to use as a brand-new 10.8 V replacement battery

Specifications

BrandDr. Battery
ModelDRPROAS243P-01
ColorBlack
TypeBattery
CompatibilityAsus: U33 Series, U33J, U33Jc, U33Jc-A1, U33Jc-RX044V, U33Jc-RX068V, U33JT, U42 Series, U42F, U42J, U42JC, U42S, U42SD, U43 Series, U43F, U43F-BBA5, U43J, U43Jc, U43Jc-A1, U43Jc-B1, U43Jc-WX041V, U43Jc-WX057V, U43Jc-WX059V, U43Jc-WX070V, U43Jc-WX080V, U43Jc-WX090X, U43Jc-WX097V, U43Jc-WX101V, U43Jc-WX118V, U43Jc-WX130V, U43Jc-WX139V, U43Jc-X1, U43S, U43SD, U43SD-WX007V, U43SD-WX024V, U43SV, U52 Series, U52F, U52F-BBL5, U52J, U52Jc, U53 Series, U53F, U53J, U53Jc, U53Jc-A1, U53Jc-XX049X, U53Jc-XX086V, U53Jc-XX108V, U53S, U53SD, U53SV
Asus: A31-U53, A32-U53, A41-U53, A42-U53
Battery TypeLithium-Ion
Battery Voltage10.8V
Battery Capacity4400 mAh

Questions about this item

How can I confirm the battery is working correctly after installing it in my Asus U43Jc?

After installation, the laptop should power on using only the battery, show a 10.8V charge level in the operating system, and hold a charge consistent with the 4400mAh rating during normal use.

What comes in the box and do I need any extra parts to fit this Dr. Battery A42-U53?

The box contains the replacement battery only; no tools, cables or adapters are included. You reuse the existing screws and connectors from your Asus laptop.

Which version should I choose if my original battery is labelled A32-U53?

This battery replaces Asus part numbers A31-U53, A32-U53, A41-U53 and A42-U53, so it matches the A32-U53 label directly.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.