About this replacement
HTC Jetstream / Puccini — 3.7V Li-Polymer Replacement Battery (BG09100)
This is a 3.7V, 6800mAh Li-Polymer battery for the HTC Jetstream tablet. It fits the Jetstream, Puccini, P715a, and Jetstream 10.1. Direct swap for the original BG09100, 35H00161-00P, and 35H00161-00M cells.
- Jetstream / Puccini platform fit: These models share the same mainboard voltage rail, connector pinout, and BMS handshake protocol. One cell covers all variants without modification.
- Bench tested on actual hardware: We ran this cell through a full charge-discharge cycle on the Jetstream mainboard. The BMS accepted the charge handshake on first contact and reported state-of-charge correctly after one calibration cycle.
- Fuel gauge recalibration after install: After fitting this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100% without interruption. This forces the fuel gauge IC to map its thresholds against the new cell and clears the inaccurate percentage readings that appear immediately after a swap.
Jetstream shutting down at 15–25% remaining
The Jetstream drives a large IPS display and simultaneous LTE and WiFi radios. Under that combined load, the battery voltage drops sharply in the lower charge range. The BMS hits its low-voltage cutoff before the OS fuel gauge reaches 0%, so the tablet shuts down with percentage still showing on screen. One full discharge-to-cutoff cycle followed by a complete charge resets the gauge and aligns the cutoff point with the displayed percentage. Target a resting voltage of 4.18–4.20V at full charge to confirm the cell is within spec.
Fast charging not available after battery swap
The Jetstream's charge IC uses a negotiation cycle to validate the connected cell before enabling higher charge current. On first use after a swap, the IC defaults to trickle rate until it completes one accepted charge cycle. Plug into the original HTC charger — third-party adapters may not satisfy the voltage handshake — and allow a full uninterrupted charge to 100%. After that first cycle, the charge IC unlocks normal charge current on subsequent sessions.