About this replacement
Dell Latitude 13 7330 / 7330 Rugged Extreme — 11.25V Li-Polymer Replacement Battery (01VX5)
This 11.25V, 3450mAh (38.81Wh) lithium-polymer battery replaces the original cell in the Dell Latitude 13 7330 and Latitude 7330 Rugged Extreme. It matches OEM part numbers 01VX5, 293F1, and 404T8. Slot it in and the laptop powers on — no driver installs, no BIOS flags during boot.
- Latitude 7330 and 7330 Rugged Extreme fit: Both variants share the same 11.25V three-cell architecture, connector pinout, and BMS handshake protocol — one cell covers both. The Rugged Extreme adds a hardened chassis but does not change the battery bay or management circuit.
- Bench tested on actual hardware: We ran this cell through charge, discharge, and a full BIOS battery learn cycle on a Latitude 7330 unit. The BMS reported capacity correctly, the fuel gauge IC synced within two cycles, and no spurious health warnings appeared in Dell's battery diagnostics.
- Post-install calibration on the 7330: After fitting, run one full discharge to hibernate-cutoff then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.
BIOS reporting poor battery health immediately after fitting a new cell
The Latitude 7330 BIOS reads health data stored in the outgoing cell's EEPROM and flags a mismatch when a new cell arrives with fresh EEPROM values. This is not a fault with the replacement — it is the firmware comparing old cycle-count data it no longer has. Run the battery learn cycle: discharge fully to hibernate, then charge to 100% without interruption. After one complete cycle the BIOS recalibrates and the warning clears.
Laptop shuts down at 20–30% shown on the fuel gauge
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. Under full CPU and display load, voltage drops faster than the old curve predicts, and the BMS triggers a protective shutdown before the gauge reaches zero. The fix is two or three full discharge-to-hibernate and recharge cycles — each one teaches the fuel gauge IC where the real voltage cliff sits. After calibration, shutdown should occur below 5% indicated charge.