Galaxy Indulge SCH-R910 Replacement Battery 3.7V 1700mAh

MetroPCS Galaxy Indulge SCH-R910 — 3.7V Li-ion Replacement Battery

This 3.7V, 1700mAh Li-ion battery is a direct cell swap for the MetroPCS Galaxy Indulge (SCH-R910 / SCHR910ZKAM). It restores power to a phone that no longer holds a charge due to cell degradation. Dimensions are 64.60 × 43.90 × 5.20mm — confirm against your existing cell before installing.

• SCH-R910 platform fit: The Galaxy Indulge uses a removable Li-ion cell with a three-contact connector tied to a basic fuel gauge IC. All listed model numbers — Galaxy Indulge, SCH-R910, SCHR910ZKAM — share the same battery bay geometry and contact layout.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the SCH-R910 platform, confirmed the BMS accepted the cell without error flags, and verified the charge IC reached full termination voltage without cutoff trips.
• First-cycle fuel gauge reset: On first use after installation, run one full discharge down to auto-shutoff, then charge uninterrupted to 100%. This gives the fuel gauge IC a measured discharge curve against the new cell so percentage readings stay accurate from cycle two onward.

Why the Galaxy Indulge reports wrong battery percentage after a cell swap

The SCH-R910 uses a fuel gauge IC that stores a learned discharge curve from the original cell. When a new cell goes in, the IC still references that old curve, which causes the percentage display to read high or low relative to actual charge. The mismatch is largest mid-cycle — typically between 40% and 70% — where the old curve and new cell diverge most. One complete discharge-to-shutoff followed by a full uninterrupted charge recalibrates the coulomb counter against the new cell's actual voltage profile. After that cycle, readings stabilise.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage cliff issue, not a capacity problem. Under modem transmission load or screen brightness peaks, the cell's terminal voltage drops sharply — the phone's protection circuit sees this as a cutoff condition and shuts down even though the gauge still shows charge remaining. It happens most often in the first few cycles before the fuel gauge has recalibrated. Run two full discharge-charge cycles and the gauge will track the new cell's actual knee voltage. If shutdowns continue past cycle three, check that the battery contacts are clean and the cell is seated flat — a raised corner increases contact resistance and worsens voltage sag under load.