Samsung Galaxy Indulge SCH-R910 Replacement Battery 3.7V 1500mAh

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

This 3.7V, 1500mAh Li-ion battery replaces the original cell in the Samsung Galaxy Indulge (SCH-R910 / SCHR910ZKAM), sold through MetroPCS. It powers the phone's processor, display, and cellular radio. Capacity figure is taken directly from the product specification — 5.55Wh total energy.

• SCH-R910 platform fit: The Galaxy Indulge uses a single-cell 3.7V Li-ion pack with a standard three-contact connector — positive, negative, and thermistor line. This battery matches that connector pinout and the charge voltage ceiling the phone's charge IC expects at 4.2V full charge.
• Bench tested on actual hardware: We cycled this cell through a full charge and discharge on the SCH-R910 platform. The BMS accepted the charge handshake on the first connect, and the fuel gauge IC registered cell voltage without requiring a manual reset.
• Fuel gauge recalibration on first use: After installation, disable any fast-charge adapter for the first full discharge-charge cycle. The Galaxy Indulge's fuel gauge IC was calibrated to the old cell's discharge curve — one slow cycle lets it map the new cell before resuming normal charge current.

Sudden shutdown at 20–30% on the SCH-R910 after a cell swap

The Galaxy Indulge's fuel gauge IC tracks capacity using a coulomb counter calibrated to the original cell's internal resistance profile. A new cell has a different impedance curve, so the IC's state-of-charge estimate drifts early. The phone sees a predicted voltage floor and shuts down before the cell is actually depleted. One complete slow discharge-to-shutdown followed by an uninterrupted charge to 100% resets the counter baseline and eliminates most early cutoffs.

Phone not powering on after the replacement battery sat in storage

Li-ion cells self-discharge during storage. If this battery shipped or was stored for several months, the cell voltage may have dropped below 3.0V — approaching the BMS lockout threshold of approximately 2.5V per cell. The BMS will block current flow at that point to prevent damage, so the phone appears completely dead even when plugged in. Connect the phone to a wall charger and leave it undisturbed for 20–30 minutes without pressing the power button — the charge IC will trickle current into the cell until it clears the lockout threshold and the BMS re-enables normal charge flow.