SV10B Qtek 8060 Replacement Battery 3.7V 950mAh

Qtek 8060 / 8080 — 3.7V Li-ion Replacement Battery (SV10B)

This is a 3.7V, 950mAh (3.52Wh) Li-ion cell for the Qtek 8060 and 8080 smartphones. It replaces OEM part numbers SV10B and SV16A. If your original cell no longer holds charge or the phone shuts off unexpectedly, this is the direct replacement.

• 8060 and 8080 compatibility: Both models run the same 3.7V single-cell architecture and share the same connector pinout and BMS handshake protocol — one cell covers both platforms without modification.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the 8060 platform. The BMS accepted charge without fault flags, and the protection circuit engaged correctly at low-voltage cutoff.
• Fuel gauge recalibration on first use: On first installation, run one complete discharge to automatic shutdown, then charge uninterrupted to 100% before normal use. This gives the 8060's fuel gauge IC a clean reference curve against the new cell — skipping this step causes percentage readings to drift from the first day.

Sudden shutdown at 20–30% on the Qtek 8060

This is a voltage cliff problem, not a capacity problem. When the modem fires or the screen backlight peaks, current draw spikes sharply. If the cell's internal resistance is high — common on aged cells — voltage drops faster than the fuel gauge IC tracks it, and the phone cuts power to protect the circuit before the percentage reaches zero. A new cell with lower internal resistance holds voltage under load, so the shutdown threshold is only hit when the cell is genuinely depleted. After installation, one full discharge cycle lets the fuel gauge re-anchor to the new cell's actual discharge curve, reducing premature cutoffs.

Phone will not power on after the battery has been in storage

Li-ion cells stored below approximately 2.5V trigger a BMS lockout — a hard protection state that blocks charging current entirely. Plugging in a standard charger does nothing because the BMS will not pass current to a cell it considers unsafe. To recover, connect the phone to a wall charger and leave it for 15–20 minutes without attempting to power on — most chargers trickle a small pre-charge current that nudges the cell above the lockout threshold. Once the BMS sees the cell voltage cross roughly 2.8V, it releases and normal charging resumes. If the phone still shows no response after 30 minutes on charge, check that the charger output is at least 5V 500mA.