BOPBM100 HTC Desire 616 Replacement Battery 3.7V 1800mAh

HTC Desire 616 — 3.7V Li-ion Replacement Battery (BOPBM100)

This is a 3.7V, 1800mAh Li-ion replacement cell for the HTC Desire 616, Desire 616 Dual SIM, and Desire D616w smartphones. It replaces OEM part BOPBM100 and fits the same physical bay — 68.10 x 55.90 x 4.50mm. Install it when the original cell no longer holds a charge or causes unexpected shutdowns.

• Desire 616 series compatibility: The Desire 616, 616 Dual SIM, and D616w variants share the same battery bay dimensions and connector pinout. The BOPBM100 spec covers all three — no hardware modification needed to swap the cell.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on a Desire 616 unit. The BMS accepted the charge handshake on the first cycle, and the protection circuit tripped correctly at low-voltage cutoff without locking the phone out of a recovery charge.
• Fuel gauge recalibration on first use: After installing this cell, disable fast charging and complete one full discharge down to automatic shutdown, then charge uninterrupted to 100%. This gives the Desire 616's fuel gauge IC a clean reference curve for the new cell before high-current charging cycles begin.

Why the Desire 616 reports wrong battery percentage after a cell swap

The Desire 616 uses a fuel gauge IC that stores a learned discharge curve from the old cell. When a new cell goes in, the IC has no reference for the new cell's voltage-to-capacity relationship. It reads voltage and maps it against the old curve, which causes the percentage display to jump or freeze at incorrect values. One full uninterrupted discharge-charge cycle overwrites the stored curve and brings the percentage readout back in line with actual capacity.

Sudden shutdown at 20–30% on the replacement cell

This happens when the phone's modem or screen pulls a current spike that drops the cell voltage below the BMS cutoff threshold — even though the fuel gauge still shows charge remaining. On a new cell that hasn't been calibrated, the fuel gauge IC doesn't yet know where the voltage cliff sits for that specific cell. The BMS trips and shuts the phone down at what looks like 25% because the cell voltage collapsed under load. Run the recalibration cycle described above — one full discharge to shutdown, then charge to 100% — and the shutdowns stop once the gauge IC maps the actual cutoff point to 3.4V under load.