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Acer AP18C8K Replacement Battery vs Acer AP21A8T Replacement Battery: Comparison
What is the difference between AP18C8K Replacement Battery and AP21A8T Replacement Battery?
The gap that matters here is capacity wh: AP18C8K Replacement Battery 50.29 Wh against AP21A8T Replacement Battery 90.61 Wh, which puts AP21A8T Replacement Battery 44% ahead. On battery model code there is little in it, AP18C8K on the AP18C8K Replacement Battery versus AP21A8T on the AP21A8T Replacement Battery. Nominal voltage is not the same on both, 11.25 V on the AP18C8K Replacement Battery versus 15.4 V on the AP21A8T Replacement Battery. They differ on cell count too, 3 on the AP18C8K Replacement Battery versus 4 on the AP21A8T Replacement Battery. Series configuration is not the same on both, 3S on the AP18C8K Replacement Battery versus 4S on the AP21A8T Replacement Battery. They differ on compatible models too, Acer Aspire 5 A515-58M , Acer Aspire 5 A515-54,... on the AP18C8K Replacement Battery versus Acer Nitro 16 AN16-41 , Acer Predator Helios 18... on the AP21A8T Replacement Battery. There is a split on replaces part numbers as well, AP18C4K on the AP18C8K Replacement Battery versus AP21A7T, AP21A5T on the AP21A8T Replacement Battery.
Which should you buy, AP18C8K Replacement Battery or AP21A8T Replacement Battery?
The AP18C8K Replacement Battery is the one to take for Chromebook 315 CB315-3H and CB315-3HT battery replacements, though it is the wrong buy for anyone matching on the Aspire series name alone. It also earns its place with aspire 5 A515-54, A515-55 and A515-58M owners whose old pack reads AP18C8K or AP18C4K. It is the wrong buy for aspire 3 A315-56 units fitted with an AP16M5J or AP19B8K pack. Take the AP21A8T Replacement Battery for nitro 16 AN16-41 owners with an AP21A8T, AP21A7T or AP21A5T label. Avoid it for buyers who need a maker-confirmed fit for the Predator Helios 18 or Helios Neo 16 before ordering.
Where the two are identical
The common ground is wider than the gap: capacity basis, expected firmware state and shipping classification are identical here.
Specs and benchmarks
Brand
- Acer AP18C8K Replacement Battery
- Acer
- Acer AP21A8T Replacement Battery
- Acer
Battery Model Code
- Acer AP18C8K Replacement Battery
- AP18C8K
- Acer AP21A8T Replacement Battery
- AP21A8TBest
Nominal Voltage
- Acer AP18C8K Replacement Battery
- 11.25 V
- Acer AP21A8T Replacement Battery
- 15.4 V
Cell Count
- Acer AP18C8K Replacement Battery
- 3
- Acer AP21A8T Replacement Battery
- 4
Series Configuration
- Acer AP18C8K Replacement Battery
- 3S
- Acer AP21A8T Replacement Battery
- 4S
Capacity Wh
- Acer AP18C8K Replacement Battery
- 50.29 Wh-44%
- Acer AP21A8T Replacement Battery
- 90.61 WhBest
Capacity Basis
- Acer AP18C8K Replacement Battery
- Seller Claim
- Acer AP21A8T Replacement Battery
- Seller Claim
Expected Firmware State
- Acer AP18C8K Replacement Battery
- full_function
- Acer AP21A8T Replacement Battery
- full_function
Shipping Classification
- Acer AP18C8K Replacement Battery
- UN3481
- Acer AP21A8T Replacement Battery
- UN3481
Compatible Models
- Acer AP18C8K Replacement Battery
- Acer Aspire 5 A515-58M (Core i5-1335U, 16GB, 512GB), Acer Aspire 5 A515-54, Acer Aspire 5 A515-55, Acer Aspire 3 A315-56, Acer Chromebook 315 CB315-3H / CB315-3HT
- 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 AP18C8K Replacement Battery
- AP18C4K
- Acer AP21A8T Replacement Battery
- AP21A7T, AP21A5T
Which one should you pick?
Choose Acer AP18C8K 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 50.29 Wh).