JADE160 Dopod S700 Replacement Battery 3.7V 1100mAh

Dopod S700 / Touch T3238 / Tachi — 3.7V Li-ion Replacement Battery (JADE160)

This is a 3.7V, 1100mAh Li-ion battery for the Dopod S700, Touch T3238, and Tachi smartphones. It replaces OEM part numbers JADE160, 35H00118-00M, and BA S330. Capacity figures come from the product data — 4.07Wh at rated voltage.

• S700, Touch T3238, and Tachi compatibility: All three models share the same battery bay dimensions (50.99 × 36.56 × 5.40mm), the same 3.7V single-cell architecture, and the same connector pinout. The BMS handshake protocol is identical across all three, so one cell fits all without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the S700 platform. The BMS accepted the charge IC handshake on the first connection. Protection circuits tripped correctly at low-voltage cutoff with no false triggers during normal screen and call loads.
• Fuel gauge recalibration on first use: After fitting this cell, disable any fast-charge mode and run one full discharge-to-charge cycle before daily use. The fuel gauge IC in these devices was calibrated to the original cell's discharge curve. One complete cycle lets it re-map against the new cell before high-current charging begins on an uncalibrated coulomb counter.

Sudden shutdown at 20–30% on the S700 after a cell swap

The S700's fuel gauge IC reads state-of-charge against a stored discharge curve from the original cell. A new cell has a slightly different voltage-versus-capacity profile, so the gauge can misread remaining charge by 15–25% until it recalibrates. Under modem or display load, the new cell hits its actual low-voltage floor before the OS expects it. The phone cuts power to protect the cell. Run two full discharge-charge cycles without fast charging — after that the gauge tracks accurately and shutdowns stop.

Phone stays on the boot screen or won't power on after the replacement cell sat in storage

Li-ion cells self-discharge during storage. If this battery shipped below 2.5V per cell, the BMS enters lockout mode and blocks the charge IC from receiving current. The phone sees no usable voltage and cannot boot. Connect the device to a wall adapter — not a PC port — and leave it undisturbed for 20–30 minutes without pressing the power button. The charge IC trickle-charges the cell back above the BMS unlock threshold, typically around 2.9V, at which point normal charging resumes and the phone boots.