Li37130C Hisense T912 Replacement Battery 3.7V 1450mAh

Hisense T912 / T929 / E912 — 3.7V Li-ion Replacement Battery (Li37130C)

This is a 3.7V, 1450mAh Li-ion cell built to the Li37130C spec, replacing the original battery in Hisense T912, T929, E912, and U912 smartphones. It fits devices that share the same physical footprint (65.00 × 49.90 × 4.10mm) and connector layout. Capacity is 5.37Wh — matched to the OEM spec in the product data.

• T912 / T929 / E912 / U912 platform fit: These models share the Li37130C cell format, the same connector pinout, and a compatible BMS handshake voltage threshold. One cell covers the group.
• Bench tested on actual hardware: We cycled this cell through a full charge-discharge run and monitored BMS cutoff behaviour at both ends — low-voltage lockout engaged correctly below 3.0V, and charge termination cut at 4.2V as expected for this chemistry.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This gives the fuel gauge IC a clean reference curve against the new cell before high-current charging is applied to an uncalibrated coulomb counter.

Why the T912 reports wrong battery percentage after a cell swap

The fuel gauge IC in these Hisense devices tracks charge state using a coulomb counter calibrated to the original cell's discharge curve. Swap the cell and the IC still references the old curve — so the percentage on screen drifts from reality, often reading high then dropping sharply. One full discharge from 100% to auto-shutoff, followed by a full charge to 100%, forces the IC to relearn the new cell's voltage-to-capacity relationship. After that cycle, reported percentage stabilises.

Sudden shutdown at 20–30% remaining on the replacement cell

This happens when the modem or display pulls a current spike the cell can't sustain at that state of charge — voltage dips below the BMS cutoff threshold even though the gauge still shows capacity remaining. It's a voltage cliff issue, not a capacity defect. The fix is the same recalibration cycle: drain the phone to auto-shutoff under real load (screen on, mobile data active), then charge uninterrupted to 100%. Once the fuel gauge IC maps the actual voltage floor of the new cell, the phantom shutdowns stop. Target cell voltage at auto-shutoff should be approximately 3.0V.