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Rectangular black laptop battery with label showing 48Wh 11.4V 4210mAh

Lenovo

Lenovo 3-Cell 48Wh Li-Ion Battery T7B31AA-TM

SKU CH-QRBC-R3CHE

A 3-cell 48 Wh lithium-ion battery delivering 11.4 V and 4210 mAh for compatible HP notebook PCs

  • TypeConsumer Electronics
  • Battery TypeLithium-Ion
  • Lithium-Ion chemistry provides reliable rechargeable power
  • 48 Wh capacity supports extended notebook runtime
  • 4 V DC output matches compatible HP systems
  • 4210 mAh rating delivers consistent energy storage
  • Fits HP 640 G2, 645 G2, 650 G2 and 655 G2 notebooks

Compatible HP Notebook Battery

This 3-cell lithium-ion battery replaces the original power pack in HP 650 G2, 640 G2, 645 G2 and 655 G2 notebooks. It delivers a 48 Wh capacity at 11.4 V DC and is ready to use as a direct replacement for worn or failed cells.

Thermals Noise and Power Draw

Lithium-ion chemistry keeps self-discharge low and operates silently with no moving parts. Normal charging and discharging stay within the thermal envelope designed for the supported notebook chassis.

Sustained Load Behaviour

The 4210 mAh rating supports extended mobile work sessions away from mains power. Capacity remains stable across repeated charge cycles without the memory effect found in older chemistries.

Highlights

  • Lithium-Ion chemistry provides reliable rechargeable power
  • 48 Wh capacity supports extended notebook runtime
  • 4 V DC output matches compatible HP systems
  • 4210 mAh rating delivers consistent energy storage
  • Fits HP 640 G2, 645 G2, 650 G2 and 655 G2 notebooks

Specifications

BrandTOTAL MICRO TECHNOLOGIES
TypeConsumer Electronics
Battery TypeLithium-Ion

Questions about this item

How is the 3-cell 48 Wh lithium-ion pack installed in a 650 G2, and which step is often missed?

Power off the notebook, remove the AC adapter, slide the release latch to unlock the old pack, fit the replacement until it clicks, then reconnect power and let the system recognise the new battery before first use.

What maintenance will the 4210 mAh 11.4 V DC battery need over its life?

Keep the contacts clean, avoid storing the pack fully discharged, and run a full charge cycle every few weeks if the notebook stays plugged in most of the time.

What limit appears first when the 655 G2 runs a sustained load on this pack?

The 48 Wh capacity determines how long the notebook can maintain performance before the voltage drops and the system throttles to protect the cells.

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