Consumercarts is reader-supported. Learn more
Acer AP18E8M Replacement Battery vs Acer AP21A8T Replacement Battery: Comparison
AP18E8M Replacement Battery vs AP21A8T Replacement Battery: the capacity wh difference
The gap that matters here is capacity wh: AP18E8M Replacement Battery 57.48 Wh against AP21A8T Replacement Battery 90.61 Wh, which puts AP21A8T Replacement Battery 37% ahead. On battery model code there is little in it, AP18E8M on the AP18E8M Replacement Battery versus AP21A8T on the AP21A8T Replacement Battery. They differ on expected firmware state too, unknown on the AP18E8M Replacement Battery versus full_function on the AP21A8T Replacement Battery. There is a split on compatible models as well, Acer Nitro 5 AN517-51, Nitro 5 AN517-52, Aspire 7... on the AP18E8M Replacement Battery versus Acer Nitro 16 AN16-41 , Acer Predator Helios 18... on the AP21A8T Replacement Battery. They differ on replaces part numbers too, AP18D8M on the AP18E8M Replacement Battery versus AP21A7T, AP21A5T on the AP21A8T Replacement Battery.
Which should you buy, AP18E8M Replacement Battery or AP21A8T Replacement Battery?
Take the AP18E8M Replacement Battery for nitro 5 AN515-55 and AN515-57 owners whose old pack reads AP18E8M or AP18D8M. It is not the one for nitro 5 AN515-55 units fitted with the 58.75Wh AP18E7M, unless you accept the small capacity drop. Take the AP21A8T Replacement Battery for nitro 16 AN16-41 owners with an AP21A8T, AP21A7T or AP21A5T label. It is the wrong buy for buyers who need a maker-confirmed fit for the Predator Helios 18 or Helios Neo 16 before ordering.
Where the two are identical
Everything else lines up. Nominal voltage, cell count, series configuration, capacity basis and shipping classification read the same on both, so those are not worth weighing.
Specs and benchmarks
Brand
- Acer AP18E8M Replacement Battery
- Acer
- Acer AP21A8T Replacement Battery
- Acer
Battery Model Code
- Acer AP18E8M Replacement Battery
- AP18E8M
- Acer AP21A8T Replacement Battery
- AP21A8TBest
Nominal Voltage
- Acer AP18E8M Replacement Battery
- 15.4 V
- Acer AP21A8T Replacement Battery
- 15.4 V
Cell Count
- Acer AP18E8M Replacement Battery
- 4
- Acer AP21A8T Replacement Battery
- 4
Series Configuration
- Acer AP18E8M Replacement Battery
- 4S
- Acer AP21A8T Replacement Battery
- 4S
Capacity Wh
- Acer AP18E8M Replacement Battery
- 57.48 Wh-37%
- Acer AP21A8T Replacement Battery
- 90.61 WhBest
Capacity Basis
- Acer AP18E8M Replacement Battery
- Seller Claim
- Acer AP21A8T Replacement Battery
- Seller Claim
Expected Firmware State
- Acer AP18E8M Replacement Battery
- unknown
- Acer AP21A8T Replacement Battery
- full_function
Shipping Classification
- Acer AP18E8M Replacement Battery
- UN3481
- Acer AP21A8T Replacement Battery
- UN3481
Compatible Models
- Acer AP18E8M Replacement Battery
- Acer Nitro 5 AN517-51, Nitro 5 AN517-52, Aspire 7 A715-74, Aspire 7 A715-74G, ConceptD 3 Pro CN315-71P, ConceptD 5 Pro CN515-71P, Predator Triton 300 PT315-51, Nitro 5 AN515-55, Nitro 5 AN515-57
- Acer AP21A8T Replacement Battery
- 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)
Replaces Part Numbers
- Acer AP18E8M Replacement Battery
- AP18D8M
- Acer AP21A8T Replacement Battery
- AP21A7T, AP21A5T
Which one should you pick?
Choose Acer AP18E8M Replacement Battery if you already have it on hand or find it at a lower price.
Choose Acer AP21A8T Replacement Battery if you want the higher capacity wh (90.61 Wh vs 57.48 Wh).