SCP-51LBPS Kyocera E6710 Replacement Battery 3.7V 1650mAh

Kyocera E6710 / Torque Series — 3.7V Li-ion Replacement Battery (SCP-51LBPS)

This is a 3.7V, 1650mAh Li-ion cell that replaces the OEM SCP-51LBPS battery in the Kyocera E6710 and E6715 (Torque and Torque XT). It fits the same footprint at 58.45 × 54.88 × 6.20mm and connects directly to the existing charge IC. Capacity is sourced from the product specification — 6.11Wh total energy.

• E6710, Torque, E6715, Torque XT compatibility: These four models share the same battery bay dimensions, connector pinout, and BMS handshake protocol — all four accept the SCP-51LBPS cell without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the E6710 platform. The BMS accepted the charge handshake without flagging an unknown cell error, and the fuel gauge IC tracked voltage draw correctly across the full curve.
• Fuel gauge recalibration on first use: After installing this cell, disable fast charging for one complete discharge-charge cycle. The fuel gauge IC on the Torque series calibrates its coulomb counter against the first discharge curve — running a fast-charge current into an uncalibrated cell skews the percentage readings for weeks.

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

The Torque's modem and screen draw a combined spike that can pull cell voltage below the BMS cutoff threshold before the fuel gauge registers empty. A new cell with an uncalibrated discharge curve makes this worse — the gauge overestimates remaining charge because it's reading against the old cell's slope. The BMS cuts power at 3.0V per cell even when the OS still shows 25%. One full slow-charge cycle recalibrates the coulomb counter and moves the shutdown point to the correct floor.

Phone shows incorrect battery percentage after replacing the SCP-51LBPS

The fuel gauge IC stores a discharge curve from the original cell — it doesn't reset automatically when a new cell is installed. Your E6710 reads percentage by comparing current charge state against that stored curve, so mismatches show up as jumpy or stuck readings. Drain the phone fully until it shuts down, then charge uninterrupted to 100% with the screen off. After one complete cycle, the IC rewrites its reference curve to match the new cell and percentage accuracy returns to normal.