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Black rectangular laptop battery with label showing model numbers and specifications

GreenTechLLC

GreenTechLLC AP21A8T AP21A7T AP21A5T laptop battery 90.61Wh 15.4V 5884mAh 4-cell black

SKU CH-W1GR-H4Y1D

Replaces AP21A8T, AP21A7T, AP21A5T and KT0040-series packs for Acer Nitro 16, 17 and Predator Helios 16, 18, 300 and Neo models with a 15.4V 5884mAh 90.61Wh 4-cell lithium-ion unit

  • Battery type4 Cell Lithium-Ion
  • Battery voltage rating15.4 V
  • Battery capacity5884MAH
  • Product colorBlack
  • Product typeBattery
  • Compatible withACER NITRO AN16-41, AN16-42, AN16-72, AN17-42, AN517-55, PRE
  • High-capacity 90.61Wh battery extends runtime for demanding workloads
  • 4V 5884mAh 4-cell lithium-ion delivers stable power under load
  • Direct replacement for AP21A8T, AP21A7T, AP21A5T and KT series part numbers
  • Compatible with Acer Nitro 16, Nitro 17, Nitro 5 and Predator Helios models
  • CE, FCC and RoHS certified with tested voltage, circuit protection and low self-discharge

90.61Wh 4-cell lithium-ion replacement

This new GreenTech battery delivers 15.4V and 5884mAh in a black four-cell pack. It is built for Acer Nitro 16, Nitro 17 and Nitro 5 models as well as Predator Helios 16, Helios 18 and Helios 300 variants. The unit matches the original 90.61Wh rating and fits the listed part numbers directly.

Replaces AP21A8T AP21A7T AP21A5T and KT series

It substitutes OEM part numbers AP21A8T, AP21A7T, AP21A5T, KT0040G014, KT00407011 and KT00405012. The upgrade is worthwhile when the original pack no longer holds a full charge or shows swelling. Buyers who need a higher-capacity design or a different voltage should look elsewhere.

Tested for stable current and low self-discharge

Each unit undergoes pre-shipment checks for correct voltage, circuit protection and steady output under continuous use. CE, FCC and RoHS certifications confirm safety compliance during extended sessions. The four-cell lithium-ion chemistry maintains consistent performance without the rapid fade seen in degraded packs.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $71.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameGreenTech
Model nameAP21A8T, AP21A7T, AP21A5T, KT0040G014, KT00407011, KT00405012
Part numberAP21A8T, AP21A7T, AP21A5T, KT0040G014, KT00407011, KT00405012
Product colorBlack
Product typeBattery
Power
Battery type4 Cell Lithium-Ion
Battery voltage rating15.4 V
Battery capacity5884MAH
Compatibility
Compatible withACER NITRO AN16-41, AN16-42, AN16-72, AN17-42, AN517-55, PREDATOR HELIOS PH16-72, PH18-71, PH18-72, PH315-55, PH317-56, PREDATOR HELIOS NEO PHN16-72, PHN18-71

Questions about this item

Does the 90.61 Wh 4-cell battery match the AN517-55 chassis and connector?

The pack replaces OEM part numbers AP21A8T, AP21A7T, AP21A5T, KT0040G014, KT00407011 and KT00405012, which are the exact parts listed for the AN517-55 and the other compatible Nitro and Predator models.

After removing the bottom cover, what is the correct order for disconnecting and reconnecting the 15.4 V battery cable?

Disconnect the battery cable from the motherboard before lifting the old pack; when fitting the new unit, seat it in the bay, reconnect the cable firmly, then replace the cover and screws.

When should the 5884 mAh pack be replaced to keep run-time acceptable?

Replace the battery once it no longer holds enough charge for your workload — typical lithium-ion cells last several hundred full cycles before run-time drops noticeably.

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