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Black rectangular 6-cell laptop battery with label showing 10.8V 44WHR

GreenTechLLC

GreenTechLLC 4X50M08811 44WHR 10.8V 6-cell laptop battery for ThinkPad T470 T480 T570 T580 P51s P52s

SKU CH-DTTC-48J1D

6-cell 44 Wh 10.8 V lithium-ion replacement battery for ThinkPad T470, T480, T570, T580, A475, A485, P51s, P52s and ThinkPad 25

  • Battery type6 Cell Lithium-Ion
  • Battery voltage rating10.8 V
  • Battery capacity4400MAH
  • Product colorBlack
  • Product typeBattery
  • Compatible withLENOVO THINKPAD T470, THINKPAD T480, THINKPAD T570, THINKPAD
  • 44 Wh capacity powers ThinkPad T470, T480, T570, T580, P51s, P52s
  • 8 V 6-cell lithium-ion matches OEM voltage and cell count
  • Replaces ten Lenovo part numbers including 4X50M08811 and 01AV425
  • Tested for correct voltage, circuit protection and low self-discharge
  • CE, FCC and RoHS certified for safety compliance

44 Wh 6-cell ThinkPad battery

This 10.8 V lithium-ion pack replaces the original 4X50M08811 unit and fits ThinkPad T470, T480, T570, T580, A475, A485, P51s, P52s and the ThinkPad 25. It delivers 4400 mAh capacity and has been tested for correct voltage, circuit protection and low self-discharge. The black 6-cell design matches the OEM form factor for direct installation.

Not for other laptops

Buyers with ThinkPad models outside the listed series cannot use this pack because the connector and chassis profile differ. Users who need a higher-capacity 9-cell option or a different voltage should look at alternative parts. The battery is a non-OEM GreenTech replacement, so organisations requiring genuine Lenovo components must source elsewhere.

44 Wh capacity decides fit

The 44 watt-hour rating determines whether this unit meets your runtime requirement; systems expecting a larger pack will show reduced autonomy. Verify the original part number on your existing battery matches 4X50M08811, 01AV425, 02DL023 or any listed equivalent before ordering.

How it compares

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

Price $42.99
Pricier than about 74% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameGreenTech
Model name4 × 50M08811, 61+, 01AV425, 01AV426, 01AV491, 02DL023, L18M6P71, SB10K97582, SB10K97583, SB10K97661
Part number4 × 50M08811, 61+, 01AV425, 01AV426, 01AV491, 02DL023, L18M6P71, SB10K97582, SB10K97583, SB10K97661
Product colorBlack
Product typeBattery
Power
Battery type6 Cell Lithium-Ion
Battery voltage rating10.8 V
Battery capacity4400MAH
Compatibility
Compatible withLENOVO THINKPAD T470, THINKPAD T480, THINKPAD T570, THINKPAD T580, THINKPAD A475, THINKPAD A485, THINKPAD P51s, THINKPAD P52s, THINKPAD 25

Questions about this item

Will the 6-cell 10.8V pack fit the internal battery bay of my ThinkPad T480 without a chassis modification?

The battery matches the OEM 4X50M08811 form factor and locks directly into the standard internal bay on all listed ThinkPad models including the T480.

Which screw or latch step do people skip when swapping the 4X50M08811 unit on a ThinkPad P52s?

After sliding the pack in, the external release latch must be flipped fully to the locked position; skipping this leaves the battery loose and unrecognised by the BIOS.

How do I know when the 44Wh 6-cell lithium-ion pack needs replacing?

When a full charge provides noticeably less runtime than before and the OS reports a significantly reduced design capacity, the pack has reached its usable lifespan.

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