About this replacement
Microsoft Surface Pro 8 — 11.38V Li-Polymer Replacement Battery (96BTA016H)
This is a 11.38V, 4400mAh (50.07Wh) lithium-polymer battery for the Microsoft Surface Pro 8 tablet, covering model numbers 1982 and 1983. It replaces OEM part numbers 96BTA016H, 96BTA015H, and DYNC01. If your Surface Pro 8 no longer holds a charge or won't run unplugged, this is the direct cell replacement.
- Surface Pro 8 (1982 / 1983) fit: Both model variants share the same battery bay dimensions, connector pinout, and BMS communication protocol — this cell fits either board revision without modification.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a Surface Pro 8 unit. The BMS handshake completed correctly, charge IC accepted the cell without fault flags, and voltage held steady under display and WiFi combined load.
- Fuel gauge recalibration after install: After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. The Surface fuel gauge IC is calibrated against the old cell — this single cycle resets it against the new capacity and clears the inaccurate percentage readout that appears after a swap.
Surface Pro 8 shutting down at 15–25% remaining after battery replacement
This happens because the fuel gauge IC still holds calibration data from the original cell. When voltage drops under combined display and WiFi load, the IC reads a steeper voltage cliff than the new cell actually has, and Windows triggers shutdown early. The fix is one complete discharge-to-shutoff cycle followed by an uninterrupted charge to 100%. After that cycle, the IC maps the new cell's voltage curve and the early shutdown stops.
Fast charging unavailable on Surface Pro 8 after swapping the battery
The Surface Pro 8 uses USB-PD negotiation to determine charge rate. On a fresh cell, the charge IC may not approve elevated current until it has completed one accepted charge cycle at standard rate. Plug into the original Surface charger — not a third-party USB-C adapter — and let it complete a full charge without interruption. After that first accepted cycle, USB-PD negotiation runs normally and fast charge becomes available again.