HTC Hero Replacement Battery TWIN160 3.7V 2200mAh

HTC Hero / A6262 — 3.7V Li-ion Replacement Battery (TWIN160)

This 3.7V, 2200mAh Li-ion cell replaces the original battery in the HTC Hero, Hero 100, Hero 130, and A6262. It restores power to devices whose original cells have degraded through repeated charge cycles. Capacity figures come from the product data — 8.14Wh total energy.

• Hero and A6262 platform fit: These four models share the same battery bay dimensions, 3.7V single-cell architecture, and connector pinout. The BMS handshake across this group is identical, so the same cell works across all variants without modification.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on a Hero unit. The BMS held charge cutoff at 4.2V and low-voltage cutoff at 3.0V without dropping into protection mode during normal screen-on and modem load.
• Fuel gauge recalibration on first cycle: On first use, run one complete discharge to auto-shutoff, then charge uninterrupted to 100%. The Hero's fuel gauge IC calibrates its coulomb counter against this first full swing — skipping it leaves the percentage estimate drifting against the new cell's actual discharge curve.

Why the HTC Hero reports wrong battery percentage after a cell swap

The Hero uses a fuel gauge IC that builds its capacity model from historical discharge data stored against the old cell. When a new cell goes in, that model no longer matches the actual charge curve. The IC keeps interpolating against stale data, so the percentage shown on screen drifts — often reading higher or lower than reality. One complete discharge-to-shutoff followed by a full uninterrupted charge resets the coulomb counter and re-anchors the gauge to the new cell. After that cycle, percentage readouts stabilise.

Sudden shutdown at 20–30% on the replacement cell

This happens when the cell voltage drops below the modem or display's minimum rail requirement under load, even though the gauge still shows charge remaining. The original fuel gauge curve underestimates how steeply the new cell's voltage falls under combined screen and radio load near the bottom of its range. The BMS trips the protection circuit before the displayed percentage reaches zero. Run the first full calibration cycle as described above — after recalibration, the gauge tracks the actual voltage cliff and the shutoffs stop occurring at inflated percentages.