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BatteryClerk Prime FAST 1-2 day shipping to most of the USA
BatteryClerk Prime FAST 1-2 day shipping to most of the USA
Asus U20 U20A U20A-A1 U20A-B1 U20A-B2 U30 4400mAh Replacement Battery-main
SKU CS-AUA31NB

Asus U20 U20A U20A-A1 U20A-B1 U20A-B2 U30 U50 U50A U50Vg U80 U80A U80A-RSTM U80V U81 U81A U81A-RX05 U89 U89V Laptop and Notebook Replacement Battery

$48.39 - $48.39
$48.39
$48.39 - $48.39
$48.39
Usually Ships in 4—8 Business Days
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INFO
  • This is a replacement compatible with a Asus Laptop and Notebook Battery
  • Volts: 11.1V (11.1 Volts)
  • Capacity: 4400mAh (4.4Ah)
  • Type: Li-ion
  • Color: Black
  • Asus U20 U20A U20A-A1 U20A-B1 U20A-B2 U30 U50 U50A U50Vg U80 U80A U80A-RSTM U80V U81 U81A U81A-RX05 U89 U89V Replacement Batteries.
  • Mfgr Part # A31-U20 A31-U80 A32-U20 A32-U50 A32-U80 A33-U50 LOA2011 90-NVA1B2000Y L062061 LO62061 70-NV61B1100Z 70-NUP1B2100Z 07G016971875 90R-NUP1B2000Y 90R-NV61B2000Y
  • Dimensions: 8.11 in. L x 1.85 in. W x 1.18 H in.
  • Weight: 1.1 lb
  • Warranty: 1 Year

Disclaimer: Our products are not affiliated with, authorized by, manufactured by, or sold by Asus.

FAQs

  • What is the best replacement battery for the Asus U20 U20A U20A-A1 U20A-B1 U20A-B2 U30 U50 U50A U50Vg U80 U80A U80A-RSTM U80V U81 U81A U81A-RX05 U89 U89V Laptop and Notebook Battery?

    The CS-AUA31NB is the best replacement battery for the Asus U20 U20A U20A-A1 U20A-B1 U20A-B2 U30 U50 U50A U50Vg U80 U80A U80A-RSTM U80V U81 U81A U81A-RX05 U89 U89V Laptop and Notebook Battery.

  • What is your return policy and battery warranty?

    Our batteries are backed by easy 30-day returns and a 12-month warranty.

  • How do I find the best replacement Battery?

    Our search tool at the top of the website should give you the best results. Search by brand or part number to see if we have the right match for you.

  • What does Li-ion and Ni-MH mean?

    They represent different types of rechargeable batteries. Li-ion stands for Lithium Ion, lithium ions move from the negative electrode through an electrolyte to the positive electrode during discharge and back when charging. Ni-MH stands for nickel-metal hydride where the negative electrode is made from a hydrogen-absorbing alloy.

  • Do you have a wholesale, reseller and large volume purchase program?

    Yes, our bulk purchasing program saves you money and allow you to obtain the batteries you need in one easy, hassle-free transaction. Apply here.

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12-Month Warranty

If our product isn’t performing as it should, don’t hesitate to reach out to our customer service team.

More About Laptop and Notebook Batteries

Why choose BatteryClerk replacement batteries?

Exact OEM replacement that fits easily and precisely.

  • High quality, low-cost replacement batteries.
  • A guaranteed fit for your device.
  • Backed by easy 30-day returns and a 12-month warranty.
  • Millions of batteries sold globally.

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Frequently Asked Questions

Have an unanswered question? Contact Us

Why are prices so low?

All we do is sell replacement batteries, we are very good at that!
Manufacturer's are not able to process smaller orders quickly and efficiently.
BatteryClerk specializes in processing any size order accurately and fast.

When do new orders ship?

All AJC Battery orders placed Monday-Friday leave our warehouse the same day if placed before 2PM EST.

If your order is placed Friday after 2PM through Sunday, your order will be shipped out Monday morning.

What is your warranty policy?

We stand behind our products with 30-day easy returns and a 12 month warranty. Lawn and tractor batteries have a 6 month warranty.

What is the BatteryClerk return policy?

View our return policy.

What battery do I need?

Please enter the brand and model number of your device or battery you need to replace in the search bar at the top of this page. 

As long as the voltage, terminals and dimensions match, then you will be able to use this as a compatible battery replacement option.

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