HTC One BN07100 Replacement Battery 3.7V 2300mAh

HTC One 801e / 801n Series — 3.7V Li-Polymer Replacement Battery (BN07100)

This 3.7V, 2300mAh Li-Polymer cell replaces the original BN07100 unit in the HTC One smartphone lineup. It fits the One 801e, One 801n, One LTE, and over a dozen additional One variants. Dimensions are 89.91 × 59.75 × 2.90mm — matching the original cell footprint.

• One 801e / 801n platform fit: These models share the same 3.7V battery bay, connector pinout, and BMS communication protocol, which is why one cell covers the full range. The fuel gauge IC reads the same charge curve across all variants.
• Bench tested on actual hardware: We ran this cell through full charge-discharge cycles on an HTC One 801e. The BMS handshake completed without fault flags, and the charge IC accepted current from the first cycle without thermal events.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.

Sudden shutdown at 20–30% on the HTC One after a cell swap

The HTC One's Snapdragon 600 SoC and LTE modem pull current spikes that a degraded or freshly installed cell can struggle to sustain. When cell voltage drops below the BMS cutoff threshold under that load — even briefly — the phone shuts down, despite the fuel gauge still showing charge remaining. This is a voltage cliff, not a capacity problem. Run one full discharge cycle to let the coulomb counter reset its baseline, and the shutdowns typically stop.

Phone reports wrong battery percentage after replacement

The HTC One stores its fuel gauge calibration data against the old cell's impedance and discharge curve. After swapping in a new cell, the coulomb counter is still reading from that stale curve, so percentage jumps or reads low can appear immediately. This is not a fault with the replacement cell. Drain the phone fully until it powers off, charge uninterrupted to 100%, then reboot — this forces the gauge IC to rewrite its calibration to the new cell's profile.