About this replacement
Microsoft Surface 3 — 7.6V Li-Polymer Replacement Battery (MS011301-PLP22T02)
This 7.6V, 5500mAh lithium-polymer battery replaces the internal cell in the Microsoft Surface 3 and Surface Pro 3 2-in-1 tablets. It matches OEM part numbers MS011301-PLP22T02, G3HTA005H, G3HTA009H, and 1577-9700. Capacity figure is taken directly from product data — 41.8Wh.
- Surface 3 and Surface Pro 3 compatibility: Both devices share a common 7.6V cell architecture, the same flat Li-Polymer form factor, and an identical BMS handshake protocol over the internal bus — which is why one part number covers both platforms.
- Bench tested on actual hardware: We ran this cell through a full charge cycle on a Surface 3 unit. The BMS accepted the new cell without error flags, charge IC negotiated normally, and the tablet reached full charge without thermal events or charge-state faults.
- Fuel gauge reset after installation: After fitting this battery, run the tablet down to automatic shutoff — do not force it off — then charge uninterrupted to 100% without using the device. This gives the fuel gauge IC a full reference window against the new cell and clears the inaccurate percentage readings that almost always appear after a swap.
Why the Surface 3 shuts down at 15–25% battery remaining
The Surface 3 runs a combined display and WiFi load that pulls current sharply. When the cell is degraded, voltage sags under this combined draw faster than the fuel gauge tracks. The OS sees a valid percentage, but actual cell voltage drops below the BMS cutoff threshold — and the tablet shuts off. A replacement cell with full capacity raises the voltage floor under load, so the BMS no longer trips before the gauge reaches zero.
Fast charging not resuming after a battery swap
After fitting a new cell, the Surface Connect charge IC may default to trickle charge for the first session — this is the controller treating the new cell as unknown until one full accepted cycle completes. USB-PD negotiation on the Surface 3 also re-initialises after a power interrupt, which a battery swap triggers. Charge the tablet from 0% to 100% in one uninterrupted session using the original Microsoft charger. After that cycle completes, fast charge behaviour returns to normal.