About this replacement
HTC Flyer P510 — 3.7V Li-Polymer Replacement Battery (B2PMW100)
This is a 3.7V, 3150mAh lithium-polymer replacement battery for the HTC Flyer 7-inch Android tablet (model P510). It replaces OEM part B2PMW100 and fits directly into the Flyer's battery bay. Capacity is rated at 11.66Wh and matches the original cell specification.
- P510 platform fit: The Flyer uses a single-cell Li-Polymer pack with a proprietary connector and a fuel gauge IC that communicates cell state to Android's battery service. The B2PMW100 form factor is specific to this tablet — 105.30 x 82.25 x 3.00mm — so fitment is straightforward once the back panel is removed.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on P510 hardware. The BMS accepted charge from the Flyer's onboard charge IC without fault flags, and voltage at full charge settled correctly at the expected Li-Polymer ceiling.
- Fuel gauge recalibration after swap: After installing this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100% without interruption. This gives the fuel gauge IC a full reference window against the new cell and corrects the inaccurate percentage readings that appear immediately after a swap.
Why the HTC Flyer shuts down at 15–25% after a battery replacement
The Flyer's fuel gauge IC builds a voltage-to-capacity map over charge cycles. When a new cell goes in, that map still reflects the old battery's discharge curve. Under combined screen and Wi-Fi load, voltage drops faster than the IC predicts, and Android triggers a low-battery shutdown before the gauge reaches zero. One complete discharge-to-shutoff followed by an uninterrupted full charge resets this map against the new cell. After that cycle, the shutdown threshold should stabilise at or below 5%.
Tablet stuck in boot loop immediately after battery installation
A boot loop on first power-up after a swap usually means the battery voltage is too low from storage for the Flyer's charge IC to hand off to the main board correctly. Connect the charger before pressing the power button and leave it for 10–15 minutes. The charge IC needs to bring the cell above approximately 3.0V before the system rail can stabilise. Once the charging LED activates and holds steady, a normal boot will complete.