Google Play Edition Smartphone Replacement Battery 3.7V 2300mAh

Google Play Edition — 3.7V Li-Polymer 2300mAh Replacement Battery

This is a 3.7V, 2300mAh lithium-polymer replacement battery for the Google Play Edition smartphone. It fits devices where the original cell has degraded, lost charge capacity, or stopped holding a charge. Capacity is rated at 8.51Wh — matching the original cell specification.

• Play Edition platform fit: The Play Edition shares its battery footprint and connector pinout with the base hardware it runs on. The BMS handshake relies on voltage thresholds, not encrypted authentication — so a replacement cell at the correct voltage and chemistry seats and communicates without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Play Edition unit. The BMS accepted the cell without a handshake error, held the charge curve through to 4.2V cutoff, and discharged to the low-voltage cutoff floor without triggering a premature protection trip.
• Fuel gauge recalibration on first cycle: After installation, disable fast charging and run one full discharge down to automatic shutdown, then charge uninterrupted to 100%. The fuel gauge IC is still mapped to the old cell's discharge curve — skipping this step leaves the coulomb counter reading against the wrong baseline, which causes erratic percentage jumps on the first few cycles.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage cliff problem, not a capacity problem. Under high-current loads — active LTE, screen at full brightness, GPS — the cell voltage sags below the BMS cutoff threshold even though the fuel gauge still shows charge remaining. The fuel gauge IC is reading state-of-charge from a model calibrated to the old, degraded cell, so the percentage it shows is optimistic. One full discharge-charge cycle forces the coulomb counter to remap against the new cell's actual discharge curve. After that cycle, shutdown below 15% drops significantly.

Device won't power on after sitting in storage with a flat battery

If a lithium-polymer cell discharges below approximately 2.5V per cell during storage, the BMS trips into deep-discharge lockout to prevent damage. The phone will show no response to a standard power press. Connect the device to a wall charger — not a USB port — and leave it for 15–20 minutes without pressing any buttons. The charge IC trickle-feeds current at a low rate to bring the cell back above the BMS re-enable threshold, typically around 3.0V, before full charge current resumes. If the screen remains blank after 30 minutes on a wall adapter, check that the charging cable is fully seated at both ends.