About this replacement
HTC One M10 Series — 3.85V Li-Polymer Replacement Battery (B2PS6100)
This is a 3.85V, 3000mAh (11.55Wh) lithium-polymer replacement battery for the HTC One M10, One M10U, One M10h, and 10 Lifestyle. It fits directly in place of OEM part B2PS6100 (also listed as 35H00256-00). Order this when the original cell no longer holds a usable charge or has failed outright.
- M10 variant compatibility: The One M10, M10U, M10h, and 10 Lifestyle all share the same physical cell format, connector pinout, and BMS communication protocol — that is why a single part number covers the full lineup.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an M10 unit, confirmed BMS handshake with the charge IC, and verified the fuel gauge IC accepted the new cell without triggering a fault state.
- Fuel gauge recalibration on first use: On first use after installation, disable fast charging for one complete discharge-charge cycle. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell.
Sudden shutdown at 20–30% on a replacement cell
The HTC One M10's fuel gauge IC stores a learned discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches actual cell behaviour. Under peak loads — screen at full brightness, LTE active, GPS running — the new cell's voltage drops faster than the old curve predicts, and the phone cuts out before the gauge reaches zero. One full discharge-to-shutdown and uninterrupted charge cycle forces the coulomb counter to re-learn the curve. After that cycle, the reported percentage tracks the actual cell state correctly.
USB-PD fast charge not working on the first cycle after replacement
The M10's charge IC negotiates fast charge voltage only after it reads a valid BMS response from the cell. On the very first cycle with a new cell, the BMS may not respond within the handshake window, so the charge IC falls back to standard 5V charging as a protection measure. This is not a fault — plug in via the original cable and let the first charge run to 100% without interrupting it. On the second cycle, the handshake completes within spec and fast charging activates normally.