HTC C110e Replacement Battery BH39100 3.7V 1600mAh

HTC C110e / Holiday / Omega — 3.7V Li-ion Replacement Battery (BH39100)

This is a 3.7V, 1600mAh Li-ion cell that replaces the OEM battery in the HTC C110e and its regional variants. It fits the C110e, G20, Holiday, and Omega alongside nine additional HTC models that share the same BH39100 form factor. Physical dimensions are 54.80 × 47.92 × 5.10mm — confirm these against your existing cell before installing.

• Cross-variant fit — C110e, Holiday, Omega, G20: These models share the same battery bay geometry, contact pitch, and BMS handshake protocol. HTC released the same hardware under multiple carrier and regional names, so one BH39100-spec cell covers all of them without modification.
• Bench tested on actual hardware: We cycled this cell through charge and full discharge on a C110e unit. The BMS accepted charge current without fault, balanced to 4.2V at termination, and held voltage under screen-on and modem-active load without triggering a premature cutoff.
• Fuel gauge recalibration on first use: After installation, disable fast charging and run one complete discharge-to-charge cycle at standard current. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging begins against an uncalibrated coulomb counter.

Sudden shutdown at 20–30% on the BH39100 replacement cell

This is a voltage cliff issue, not a capacity fault. Under heavy load — modem transmitting, screen at full brightness, GPS active — cell voltage drops faster than the fuel gauge IC predicts. When voltage falls below the BMS cutoff threshold, the phone shuts down even though the reported percentage still shows charge remaining. The fix is a full calibration cycle: drain the phone until it powers off on its own, charge uninterrupted to 100%, then repeat once more. After two cycles the fuel gauge IC builds an accurate curve for the new cell and the premature shutdowns stop.

Phone not powering on after the replacement cell sat in storage

Li-ion cells self-discharge during storage. If the replacement cell drops below 2.5V, the BMS locks out to prevent damage to the cell — and the phone will not respond to the power button or a standard charger. Connect the phone to a wall adapter and leave it for 20–30 minutes without pressing anything; most HTC charger ICs will trickle current at around 100mA to bring the cell back above the BMS re-enable threshold. Once the LED indicator activates or a charge screen appears, normal charging can resume. If there is still no response after 45 minutes, check that the charger output is at least 5V 1A.