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Rectangular black lithium polymer battery pack with connector ribbon

NShi

NShi P21GK3 laptop battery for Microsoft Surface RT 1516 7.4V 31.5Wh 4120mAh

SKU CH-Q1CQ-2K49D

Replacement lithium-polymer battery rated at 7.4 V and 31.5 Wh (4120 mAh) for the Microsoft Surface RT 1516

  • Battery typeLithium Polymer
  • Compatible with Microsoft Surface RT 1516 first generation
  • 4V 31.5Wh 4120mAh capacity restores original runtime
  • Grade A lithium-ion cells ensure stable output
  • Built-in circuit protection guards against overcharge and short circuits
  • 100% new from manufacturer, ready to install

Replacement battery for Surface RT 1516

This lithium-ion pack is built to replace the original P21GK3 cell in the Microsoft Surface RT first-generation model 1516. It delivers 7.4V and 31.5Wh capacity using Grade A cells for stable output. The unit is 100% new from the manufacturer and includes built-in circuit protection.

4120mAh capacity for daily workloads

The 4120mAh rating supports typical browsing, document editing and media playback through a full workday. Heavier multitasking or sustained video streaming will drain the reserve faster, so users with intensive workloads should keep a charger nearby. The pack is not compatible with the second-generation Surface RT.

Grade A cells and integrated safety circuits

Grade A Samsung SDI cells reduce leakage risk and maintain consistent voltage over repeated cycles. On-board protection guards against over-charge, over-discharge and short-circuit events. Installation requires opening the device case to verify the original battery model number before fitting.

How it compares

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

Price $46.99
Pricier than about 79% of the 27,790 comparable items (median $30.99).

Specifications

Power
Battery typeLithium Polymer

Questions about this item

Will the P21GK3 battery fit the original Surface RT 1516 without forcing the back case?

The P21GK3 is built to the 7.4 V, 31.5 Wh specification of the original Surface RT 1516 battery, so it seats in the existing compartment without modification.

How can I verify the 4120 mAh cell is charging correctly after installation?

After fitting the battery, boot the tablet and confirm the OS reports 7.4 V and a capacity near 31.5 Wh; a steady charge curve to 100 % indicates the Grade A cells and protection circuit are functioning.

Does the package include the P21GK3 battery only, or are opening tools and adhesive strips supplied?

The box contains the P21GK3 lithium-polymer battery; pry tools and replacement adhesive for the 1516 chassis are not included and must be sourced separately.

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