HP Dragonfly Folio G3 Replacement Battery 7.7V 6600mAh UR04XL

HP Dragonfly Folio G3 — 7.7V Li-Polymer Replacement Battery (UR04XL)

This is a 7.7V, 6600mAh (50.82Wh) Li-Polymer battery for the HP Dragonfly Folio G3, Dragonfly Folio G3 2-in-1, Dragonfly Folio G3 13.5 inch, and Elite Dragonfly Folio G3 convertible notebooks. It replaces part numbers UR04XL, UR04053XL, M90785-2C1, M90785-2D1, M90788-005, TPN-DB1G, and TPN-DB1GM. If your original cell no longer holds charge or your system flags battery health as poor, this cell matches the OEM voltage rail and connector spec.

• Folio G3 platform compatibility: The Dragonfly Folio G3 lineup — including the standard, 2-in-1, and 13.5-inch Elite variants — all share the same 7.7V battery bay, connector pinout, and BMS handshake protocol. One cell fits across the entire family without adapter or modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Folio G3 platform. The BMS completed authentication, reported correct Wh capacity in HP Support Assistant, and held stable voltage through a full CPU-plus-display load cycle without triggering premature cutoff.
• Post-install calibration on the Folio G3: After fitting this cell, run the laptop down to hibernate-cutoff under normal use — do not force shutdown — then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.

BIOS reporting battery health as poor after fitting a new cell

The HP BIOS reads health data from the battery's EEPROM, which stores cycle count and wear history from the old cell. When a new cell is installed, the BIOS may still display a poor health flag or a red battery warning because it hasn't yet completed a learn cycle against the new chemistry. This is a firmware state, not a fault with the replacement cell. Run one full discharge-to-hibernate then a full uninterrupted charge — the BIOS updates its learn cycle data and the warning clears.

Fuel gauge jumping or reading incorrectly for the first few charge cycles

The fuel gauge IC on the Folio G3 builds its capacity model by tracking charge and discharge curves against the installed cell. A brand-new cell has no curve history, so the gauge estimates capacity using stale data from the old battery — this causes percentage jumps and early low-battery warnings. The gauge recalibrates progressively across two to three full discharge-recharge cycles. After the third full cycle, the percentage readout tracks within normal tolerance at the correct 50.82Wh baseline.