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Acer AP21A8T Replacement Battery
Acer

Acer AP21A8T Replacement Battery

View on acer.com
Brand:
Acer
Capacity Wh:
90.61 Wh
Nominal Voltage:
15.4 V
Expected Firmware State:
full_function

Quick facts

AP21A8T is a battery that fits 3 laptop models: Acer Nitro 16 AN16-41 (Ryzen 7 7735HS, RTX 4060), Acer Predator Helios 18 PH18-71 (Core i9-14900HX, RTX 4090), Acer Predator Helios Neo 16 (Core i7-14700HX, RTX 4060). It is also sold as AP21A7T, AP21A5T.

Part numberAP21A8T
Part typeBattery
Also sold asAP21A7T, AP21A5T
Capacity90.61 Wh
Voltage15.4 V
Cells4
Last checked2026-10-06

Compatible models (3)

  • Acer Nitro 16 AN16-41 (Ryzen 7 7735HS, RTX 4060)
  • Acer Predator Helios 18 PH18-71 (Core i9-14900HX, RTX 4090)
  • Acer Predator Helios Neo 16 (Core i7-14700HX, RTX 4060)

Laptops compatible with AP21A8T

Fits 3 laptops: 3 OEM confirmed, 0 seller listed, 0 reported by users.

Also sold as: AP21A7T, AP21A5T

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Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Manufacturer: Acer Last updated: 2026-10-06

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Acer AP21A8T Replacement Battery Review

Acer AP21A8T replacement battery: the 15.4V 90.61Wh 4 cell pack for the Nitro 16 AN16-41, also on our list for the Predator Helios 18 PH18-71 and Helios Neo 16.

This is the pack Acer's parts channel lists for the Nitro 16 AN16-41, and our catalog data also places it in the Predator Helios 18 PH18-71 and Predator Helios Neo 16. Acer uses three sibling codes for it, AP21A8T, AP21A7T and AP21A5T, so any of those on your old label is a match. It is a 4 cell 15.4V pack with a seller-claimed 90.61Wh, and we expect full function. For the two Predator models, read the old label before ordering.

Fitment answer

Parts-channel listed fit, expected full function: the 4 cell 15.4V 90.61Wh AP21A8T is the pack Acer's parts channel lists for the Nitro 16 AN16-41.

Which laptops this fits

Acer Nitro 16: AN16-41, including the Ryzen 7 7735HS with RTX 4060 model in our catalog. Source: Sparepartworld parts listing.

Acer Predator Helios 18: PH18-71, from our catalog data.

Acer Predator Helios Neo 16: the Core i7-14700HX with RTX 4060 model, from our catalog data.

We did not re-check the two Predator fits against a parts listing for this page.

What to check before you buy

Match any of AP21A8T, AP21A7T or AP21A5T on the old label. Acer's listings use them for the same physical pack.

Check the 15.4V, 4 cell rating. The 90.61Wh figure is a seller claim.

For the Helios 18 and Helios Neo 16, confirm the code on the old pack before you order, since those fits come from our catalog rather than a parts listing we re-checked.

Part numbers this replaces

AP21A7T and AP21A5T. Acer's parts listings use these sibling codes for the same 15.4V pack.

Safety and handling

A swollen pack means stop using the device now. Do not charge it, press on it, puncture it or pry at it with metal tools, and keep it out of water and household waste.

New packs ship at partial charge, around 30 percent, because air transport rules for lithium ion batteries require it. A pack that arrives low is correct, not faulty. Charge it fully before you judge it.

Recycle the old pack at an electronics or battery drop-off point. Never mail it back.

Age and condition

Lithium ion loses capacity on the shelf. Battery University's storage figures show roughly 96 percent retained after a year at 25C and 40 percent charge, against about 80 percent for a pack stored full. A pack that sat in a warehouse for years can arrive tired.

None of the listings we checked for this pack state a manufacture date code, so check the date printed on the label when it arrives. If the date is more than two years old, we would ask the seller for a fresher unit.

If this is not yours

If the label on your old pack does not read AP21A8T, this page is not your answer. Use our battery finder at /laptop-batteries and search by your laptop's exact model number or by the code printed on the old pack.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

  • Nitro 16 AN16-41 owners with an AP21A8T, AP21A7T or AP21A5T label

Not for

  • Buyers who need a maker-confirmed fit for the Predator Helios 18 or Helios Neo 16 before ordering

Specifications

What these specs mean
BrandAcer
Battery Model CodeAP21A8T
OEM Spare Part NumberAP21A7T, AP21A5T
Nominal Voltage15.4 V
Cell Count4
Series Configuration4S
Capacity Wh90.61 Wh
Capacity BasisSeller Claim
Expected Firmware Statefull_function
Shipping ClassificationUN3481
Compatible ModelsAcer Nitro 16 AN16-41 (Ryzen 7 7735HS, RTX 4060), Acer Predator Helios 18 PH18-71 (Core i9-14900HX, RTX 4090), Acer Predator Helios Neo 16 (Core i7-14700HX, RTX 4060)
Replaces Part NumbersAP21A7T, AP21A5T

FAQs

Can I fit a higher capacity pack in my Nitro 16 AN16-41?

We know of no larger pack listed for the AN16-41, PH18-71 or Helios Neo 16. At 90.61Wh this one is already the big option, so it is the one to buy.

Why does my laptop say the battery is not genuine?

We have found no published source on how Acer firmware treats a non-Acer pack, so we cannot promise a third-party clone will run without a warning. An OEM AP21A8T is what the machine shipped with and we expect it to run without warnings. If you see a warning, check the code and the voltage on the new label first.

Why did my new AP21A8T arrive at 30 percent?

Because it has to. IATA rules in force since 1 January 2026 require lithium ion batteries like this 90.61Wh pack to travel by air at no more than 30 percent of rated capacity. A low pack on arrival is correct. Charge it to full in the laptop and run it through a normal cycle before deciding anything about its health.

Are AP21A8T, AP21A7T and AP21A5T interchangeable?

Our data treats them as the same physical pack sold under sibling codes, and Acer's parts listing for the Nitro 16 AN16-41 groups them. Any of the three on your old label points to this page.

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