JADE160 HTC Touch 3G Replacement Battery 3.7V 1100mAh

HTC Touch 3G / Jade — 3.7V Li-ion Replacement Battery (JADE160)

This is a 3.7V, 1100mAh Li-ion replacement battery for the HTC Touch 3G and Jade series smartphones, including the Jade 100 and T3232. It replaces OEM part numbers JADE160, 35H00118-00M, and BA S330. If the original cell no longer holds charge through a normal day, this is the direct replacement.

• Touch 3G and Jade series fitment: The Touch 3G, Jade, Jade 100, and T3232 all share the same battery bay dimensions and connector pinout — 50.99 × 36.56 × 5.40mm. The BMS handshake is matched to the 3.7V nominal rail these devices expect, so the phone's charge IC communicates correctly with the replacement cell.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Touch 3G platform. The BMS held charge termination at 4.2V and triggered low-voltage cutoff before the cell dropped into the unsafe range. No thermal events occurred during the test cycle.
• Fuel gauge recalibration on first use: After fitting this battery, run one complete discharge down to auto-shutdown, then charge uninterrupted to 100% before normal use. The Touch 3G's fuel gauge IC was calibrated to the original cell's discharge curve — one full cycle resets it against this replacement cell's actual capacity curve.

Why the Touch 3G reports wrong battery percentage after a cell swap

The Touch 3G uses a fuel gauge IC that builds its percentage readings from a stored discharge curve tied to the original cell. When a new cell goes in, that stored curve no longer matches the actual voltage-to-capacity relationship of the replacement. The phone reads voltage correctly but maps it to the wrong percentage point. One complete discharge-to-shutdown followed by a full uninterrupted charge gives the IC enough data to rebuild an accurate curve against the new cell.

Sudden shutdown at 20–30% remaining on the Touch 3G

This happens when the cell voltage drops sharply under load — typically when the 3G radio fires a transmission burst or the backlight peaks — and the BMS cuts out to protect the cell. It is not a faulty battery; it is the BMS responding to a voltage sag the fuel gauge IC did not anticipate because it has not yet recalibrated to the new cell. After one full calibration cycle, the IC tracks the actual voltage cliff of the replacement cell and the percentage reading at cutoff drops to a more accurate low number. If shutdown still occurs below 3.4V under modem load after two full cycles, check that the battery contacts in the bay are clean and making firm contact.