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Rectangular black lithium-ion battery pack with connector ribbon P21GU9

KingSener

KingSener P21GU9 laptop battery 7.4V 42WH 5500mAh

SKU CH-E0PD-BK346 MPN P21GU9

Replacement lithium-ion battery delivers 7.4V and 42Wh capacity for compatible Microsoft Surface Pro 1 and Pro 2 tablets

  • Battery voltage rating7.4 V
  • Battery capacity42WH/5500 mAh
  • 42 Wh capacity delivers longer unplugged sessions
  • 4 V 5500 mAh lithium-ion cells provide stable power output
  • 100 % new replacement fits Microsoft Surface Pro 2 1601 and Pro 1 1514
  • Identical dimensions to original battery for tool-free installation
  • High-quality cells and PCB ensure full design capacity with no false rating

Compatible replacement for Surface Pro 1 and 2

This KingSener P21GU9 battery replaces the original pack in Microsoft Surface Pro 1 model 1514 and Surface Pro 2 model 1601 tablets. It is built for owners who need a direct-fit, 100% new lithium-ion cell to restore mobile runtime without modification.

Fixed 7.4 V lithium-ion chemistry limits

The pack delivers 7.4 V and 42 Wh from its internal cells, so runtime is bound by that energy rating and the tablet's own power management. Capacity cannot exceed the design figure and voltage is not selectable, so the device will only draw what its circuitry allows.

42 Wh capacity decides fit

At 42 Wh and 5500 mAh this unit matches the factory specification; tablets that require a higher or lower watt-hour rating will not accept it. Buyers who need more storage capacity for power or a different voltage must choose another part.

How it compares

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

Price $34.99
Pricier than about 62% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameKingSener
Model nameP21GU9
Part numberP21GU9 2ICP/5/94/104
Power
Battery voltage rating7.4 V
Battery capacity42WH/5500 mAh

Questions about this item

Which KingSener P21GU9 capacity matches my Surface Pro 1 or Pro 2?

This replacement battery is rated 42WH and 5500mAh at 7.4V, matching the original specification for Surface Pro 1 1514 and Pro 2 1601 models.

What does the 42WH rating mean for daily run time on a Surface Pro?

42WH is the energy capacity; actual run time depends on screen brightness, workload and system settings, but the cell is designed to meet the original battery's endurance.

Does the P21GU9 use a standard connector that fits the Surface Pro 1 and 2?

Yes, it is built to the same size and connector layout as the original battery for Surface Pro 1 1514 and Pro 2 1601, so it fits without modification.

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