About this replacement
HP Envy 15-q001tx / ProBook 450 G3 — 14.4V Li-ion Replacement Battery (RI04 / HSTNN-DB7B)
This is a 14.4V, 2200mAh (31.68Wh) Li-ion cell that fits the HP Envy 15-q001tx, ProBook 450 G3, ProBook 455 G3, ProBook 470 G3, and over 60 additional HP notebook models. It replaces the original RI04, RI04XL, HSTNN-DB7B, 805294-001, and related OEM part numbers. Install it when the original cell no longer powers the laptop off AC or fails BIOS battery health checks.
- Multi-model HP platform fit: The ProBook 450 G3, 455 G3, 470 G3, and Envy 15 q-series share the same 14.4V battery rail, connector pinout, and BMS handshake protocol — which is why one cell covers all these lines. The RI04 part number is the OEM identifier across the entire platform.
- Bench tested on actual hardware: We cycled this cell on a ProBook 450 G3 and confirmed the BMS handshake completed on first boot, BIOS recognised the battery as present, and charge current tapered correctly at top-of-charge without triggering a fault code.
- BIOS learn cycle after swap: After fitting the new cell, run the laptop down to hibernate-level cutoff on battery only, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after a cell replacement — it is a firmware calibration step, not a fault with the battery.
Why the ProBook or Envy 15 shuts down at 20–30% remaining after a battery swap
The fuel gauge IC in HP notebooks learns the discharge curve of the old cell over many cycles. When a new cell goes in, the IC still uses the old curve, so it misjudges where the voltage cliff is. Under full CPU and display load the cell voltage drops faster than the IC expects, triggering a low-battery shutdown at what the gauge still shows as 20–30%. Running two to three full discharge-and-charge cycles forces the IC to remap against the new cell's actual curve. After calibration, the gauge tracks correctly and premature shutdowns stop.
BIOS reports "Unknown" or 0% battery immediately after fitting the new cell
This happens because the BIOS reads EEPROM data written for the original cell, and the new cell's EEPROM has not yet been authenticated through a full charge cycle. It is not a compatibility fault. Power the laptop on with the AC adapter connected, let the battery charge to 100% without interruption, then reboot. After that sequence the BIOS reads the cell correctly and the health status clears from "Unknown" to a normal percentage.