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Black rectangular laptop battery with connector edge

GreenTechLLC

GreenTechLLC 20HK2 laptop battery 15.6V 64Wh Dell Pro Max 16 MC16250 MC16255

SKU CH-3KNS-ZDFXQ

15.6 V 64 Wh four-cell lithium-ion replacement battery for Dell Pro Max 16 MC16250 and MC16255 models

  • Battery type4 Cell Lithium-Ion
  • Battery voltage rating15.6 V
  • Battery capacity4102mah
  • Measurements12 × 3.3 × 0.25 in
  • Product colorBlack
  • Product typeBattery
  • Replaces five OEM part numbers for exact fit
  • 64 Wh capacity delivers extended runtime
  • 6 V lithium-ion design matches original voltage
  • Tested for stable current and circuit protection
  • CE FCC RoHS certified for safety compliance

Direct replacement battery

This GreenTechLLC 20HK2 battery fits Dell Pro Max 16 MC16250 and MC16255 laptops. It restores original runtime with a 64 Wh lithium-ion pack. The unit replaces OEM part numbers 20HK2, 0TGPX, CN-00TGPX, P63GC and CN-0P63GC. Install it when the factory cell no longer holds a charge.

Thermals and power behaviour

The four-cell lithium-ion design operates at 15.6 V and 4102 mAh with low self-discharge. Normal use produces minimal heat and no audible noise. Circuit protection guards against over-current and short-circuit conditions. CE, FCC and RoHS certifications confirm electrical safety compliance.

Build integration

The black pack measures 12 by 3.30 by 0.25 inches and weighs 0.7 lb, matching the original bay dimensions. No extra cables, adapters or firmware updates are required. Swapping the old module frees the laptop from wall power for mobile work sessions.

How it compares

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

Price $61.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameGreenTech
Model name20HK2, 0TGPX, CN-00TGPX, P63GC, CN-0P63GC
Part numberGTS-20HK2-64WH
Product colorBlack
Product typeBattery
Power
Battery type4 Cell Lithium-Ion
Battery voltage rating15.6 V
Battery capacity4102mah
Size & build
Measurements12 × 3.3 × 0.25 in
Product weight0.7 lb (0.32 kg)
Compatibility
Compatible withDELL PRO MAX 16 MC16250, PRO MAX 16 MC16255

Questions about this item

How do I install the 20HK2 battery in my Dell Pro Max 16 MC16255, and which step is most often missed?

Power off the laptop, remove the bottom case screws, disconnect the old battery cable, fit the 15.6 V 64 Wh unit, reconnect the cable, then replace the case and screws before turning on.

What replacement will this 4-cell lithium-ion pack need over its service life?

The 4102 mAh cells degrade with charge cycles; when run-time drops below your needs, replace the whole 20HK2 pack — no user-serviceable parts inside.

What limit appears first when the 20HK2 runs a sustained heavy load on the Pro Max 16?

The 15.6 V output can sag under continuous high current, triggering the laptop's power-throttle before the 64 Wh capacity is fully used.

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