Orange SPV M700 Compatible Battery 3.7V 2400mAh 35H00077-00M

Orange SPV M700 — 3.7V Li-Polymer Replacement Battery (35H00077-00M)

This is a 3.7V, 2400mAh lithium-polymer battery for the Orange SPV M700 smartphone. It replaces OEM part numbers 35H00077-00M, TRIN160, and 35H00077-02M. If the original cell has degraded and the phone no longer holds charge through a normal day, this is the direct swap.

• SPV M700 fitment: The M700 uses a single-cell Li-Polymer pack at 3.7V nominal. The connector pinout and BMS handshake on this replacement match the original HTC-manufactured hardware underneath the Orange branding. No adapter or modification required.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the SPV M700 platform. The BMS accepted the charge IC handshake on first connection, and the protection circuit triggered correctly at both the low-voltage cutoff and the thermal threshold.
• Fuel gauge recalibration on first use: On first use after installation, run one full discharge-charge cycle with fast charging disabled. The Windows Mobile fuel gauge IC was calibrated to the original cell's discharge curve. One complete cycle against the new cell gives the IC enough data to report percentage accurately.

Sudden shutdown at 20–30% on the SPV M700

This is a voltage cliff failure. Aged Li-Polymer cells lose internal capacity unevenly — the cell voltage drops sharply under the load of the radio modem or screen backlight before the fuel gauge IC registers low battery. The phone shuts down not because the gauge reads zero, but because the cell can no longer hold voltage above the CPU's minimum rail under peak current draw. Replacing the cell removes the cliff. After fitting this battery, one full discharge-charge cycle will reset the gauge baseline so the reported percentage tracks actual cell voltage correctly.

Phone not powering on after the battery sat in storage

Li-Polymer cells self-discharge at roughly 2–5% per month. A cell left in storage for a year or more can drop below 2.5V per cell — the point at which the BMS locks out charging to prevent damage. The SPV M700 will show no response on the power button and no charge indicator on the screen. Connect the phone to a known-good charger and leave it for 30–60 minutes without pressing anything. Most BMS circuits include a trickle pre-charge mode that recovers the cell slowly up to 3.0V before switching to normal charge current. If the screen remains dark after 90 minutes, test the charger output — it must be at least 5V DC at the micro-USB port.