High Quality Battery for Acer Aspire 5021WLMI (8 cells,4400mAh)

  • SKULACC300
  • ConditionReplacement, Brand New
  • Voltage14.8V
  • Capacity4400mAh
  • Number of Cells8 cells
  • Cell TypeLi-ion
  • ColorBlack
  • Size140x88.5x20.8mm(L x W x H)
  • Warranty1 Year
  • AvailabilityIn Stock
Note : 14.4V and 14.8V are compatible, they are in common use.
Our brand new 14.8V 4400mAh(8 cells) replacement battery for Acer Aspire 5021WLMI notebook is made with high-grade Li-ion cells from Samsung, LG, Panasonic to ensure maximum performance. This replacement Acer Aspire 5021WLMI battery pack is specially designed with multiple-protection circuit for maximum safety. The housing of the Acer Aspire 5021WLMI battery pack is made of non flammable and very durable plastic, which is fire retarded and avoids damage when dropped from low heights.
All our high quality replacement batteries for Acer Aspire 5021WLMI laptop have been tested and proven to match and/or exceed original Acer battery performance and are 100% compatible with Original Manufacturer Specifications. Every piece of our replacement battery for Acer Aspire 5021WLMI has been tested and validated on Acer systems to ensure the safety for your Acer laptop. This battery for Acer Aspire 5021WLMI comes with 1-Year limited warranty.
Thank you for purchasing this high quality replacement Acer Aspire 5021WLMI notebook battery at acerlaptopbattery.com.au. We have a strict testing process to ensure that your ordered products (like this battery for Acer Aspire 5021WLMI laptop) are functionally correct before they are packed and sent to you. And before placing an order please make sure that your old original Acer Aspire 5021WLMI battery's part number is listed at below and the shape is same to our batteries' images (please view the larger images for details).

Product Larger Images

Compatible Acer Part Numbers

  • 60.49Y02.001
  • 91.49Y28.001
  • 91.49Y28.002
  • BT.00403.005
  • BT.00803.007
  • BT.00804.007
  • BT.00805.002
  • BT.T2803.001
  • BT.T8603.001
  • BTP-63D1
  • BTP-96H1
  • BTP-98H1
  • BTP-AFD1
  • BTP-AGD1
  • BTP-AHD1
  • BTP-AID1
  • LC.BTP01.005
  • LC.BTP01.009
  • LC.BTP01.020

Compatible Acer Laptop Models

  • Aspire 5020
  • Aspire 5020LCI
  • Aspire 5020LMI
  • Aspire 5021LCI
  • Aspire 5021LMI
  • Aspire 5021NWLCI
  • Aspire 5021WLCI
  • Aspire 5021WLM
  • Aspire 5021WLMI
  • Aspire 5022NWLMI
  • Aspire 5022WLM
  • Aspire 5022WLMI
  • Aspire 5023WLMI
  • Aspire 5024LMI
  • Aspire 5024WLCI
  • Aspire 5024WLM
  • Aspire 5024WLMI
  • Aspire 5025WLMI

Shipping Methods

Payment Methods


1-Year Warranty
All our high quality replacement batteries for Acer Aspire 5021WLMI notebook come with a 1-year warranty. Warranty is applicable if the buyer has installed the battery properly in the device and has treated the battery correctly.

30-Day Money Back Guarantee
Our goal is to turn customer satisfaction into ‘Complete Customer Satisfaction’. That's why we offer you a 30-day money back guarantee, on top of our warranty and RMA procedure for defects!
Please note: in order to qualify to get your money back, you must first contact us and await instructions before sending back your product.


If you have a problem with one battery which bought from us, please contact us first. We will process your request and try to find a solution for your problem. If the problem cannot be fixed by our technical support engineer, we will generate an RMA number (Return Material Authorization) for you. If inspection concludes that the returned battery is defective, a new battery will be shipped out without extra charge.
Please note: we cannot process returned batteries if you have not yet received an RMA number.


Q: How to check this battery is compatible with my laptop?

A: Please find out your old battery's part number or the exact model name of your laptop at first (like 'Acer Aspire 5021WLMI'), then to match our product compatibility chart. Second please compare your old battery to our product images ensure their shape is same. Finally check the voltage(Rating) is same to your old battery's. More details please click How to find one correct battery for my laptop?

Q: Does your replacement Acer Aspire 5021WLMI battery compatibles with my original Acer Aspire 5021WLMI battery?

A: 100% OEM compatible, guaranteed to meet the specifications of your original Acer Aspire 5021WLMI battery (ensue same size & high quality). And all our batteries for Acer Aspire 5021WLMI laptop have obtained international certification( CE, UL, ROHS, ISO9001/9002 ).

Q: How to charge a new battery for Acer Aspire 5021WLMI for the first time use?

A: New Acer Aspire 5021WLMI battery pack is normally shipped in its partially charged condition. Please cycle your new Acer Aspire 5021WLMI battery pack by fully charge and discharge it for 3-5 times to allow it to reach its maximum rated capacity before use. (Note: it is perfectly normal for a battery to become warm to the touch during charging and discharging).
New batteries are hard for your device to charge; they have never been fully charged and are therefore "unformed". Sometimes your device's charger will stop charging a new battery before it is fully charged. If this happens, simply remove the battery from your device and then re-insert it. The charge cycle should begin again. This may happen several times during your first battery charge. Don't worry; it's perfectly normal.

Q: How to Remove Replace Install and Upgrade your Acer Aspire 5021WLMI Laptop Battery?

A: 1. Turn your Acer Aspire 5021WLMI laptop over.
2. Find the laptop battery release button lock for your Acer Aspire 5021WLMI laptop.
3. Now that your Acer Aspire 5021WLMI laptop battery is unlocked, find the battery release button down.
4. Holding the laptop battery release button, gently pull your battery away from the laptop.
5. Now that your Acer Aspire 5021WLMI battery is removed, grab your replacement Acer Aspire 5021WLMI battery for installation.
6. Insert the battery into the slot. Push the Acer Aspire 5021WLMI battery towards the laptop and secure it in place.