SCP-49LBPS Kyocera Hydro Replacement Battery 3.7V 1200mAh

Kyocera Hydro / Rise C5170 — 3.7V Li-ion Replacement Battery (SCP-49LBPS)

This is a 3.7V, 1200mAh Li-ion cell that replaces the original battery in the Kyocera Hydro, Rise, and C5170 series smartphones. It matches OEM part numbers SCP-49LBPS, SCP-46LBPS, and 5AATXBT052GEA. Physical dimensions are 65.10 × 43.90 × 4.80mm — confirm yours before installing.

• Hydro / Rise C5170 platform fit: These models share the same removable battery bay, connector pinout, and BMS handshake protocol across the C5170 and KYC5170 variants. One cell covers the full range listed in compatibility.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the C5170 platform. The BMS accepted the cell without fault flags, and the charge IC negotiated correctly at standard 5V input. No thermal event or cutoff anomaly was recorded.
• Fuel gauge recalibration tip: On first use after installation, run one complete discharge down to automatic shutdown, then charge uninterrupted to 100% before using the phone heavily. This lets the coulomb counter recalibrate its baseline against the new cell's actual discharge curve — skip this and percentage readings will drift.

Why the Hydro reports wrong battery percentage after a cell swap

The Hydro's fuel gauge IC stores a learned discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches actual cell chemistry or internal resistance. The gauge reads voltage and applies the old curve, so it reports numbers that don't reflect real charge state. One full discharge-to-shutdown followed by a complete uninterrupted charge resets the coulomb counter and syncs the IC to the new cell's actual behaviour.

Sudden shutdown at 20–30% on the replacement cell

This happens when the cell voltage drops below the load threshold under peak current draw — typically when the modem fires at full power during a call or data burst. The phone's OS reads 25% capacity, but the cell cannot hold voltage above the BMS cutoff floor under that load spike. It's not a defective battery — it's an uncalibrated fuel gauge mapping the wrong voltage-to-percentage curve onto the new cell. Run one full discharge cycle to let the gauge learn the actual voltage cliff on this cell, which sits around 3.4–3.5V under load.