About this replacement
Dell Latitude E7240 — 7.4V Li-Polymer Replacement Battery (VFV59)
This is a 7.4V 6000mAh (44.4Wh) Li-Polymer replacement battery for the Dell Latitude E7240 and Latitude 12 7000 series ultrabooks. It replaces OEM parts VFV59, WD52H, W57CV, GVD76, and several other Dell part numbers listed above. It fits the 12.5-inch E7240 chassis directly, using the same connector and BMS communication protocol as the original cell.
- E7240 and Latitude 12 7000 fitment: These models share the same battery bay dimensions, 7.4V two-cell Li-Polymer architecture, and SMBus BMS handshake. One replacement cell covers all variants in this cluster, including the E7240 7240-2716 sub-model.
- Bench tested on actual hardware: We ran this cell on an E7240 through charge and discharge cycles, confirming the BMS negotiated correctly with Dell's EC firmware, held stable voltage across CPU and display load spikes, and hit rated capacity within three cycles.
- Post-install calibration on the E7240: After fitting this cell, 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 most cell swaps on this platform.
BIOS reporting battery health as poor after replacement
Dell's EC reads EEPROM data written by the original cell and flags any new cell as degraded until a learn cycle completes. This is a firmware behaviour, not a fault with the replacement. The BIOS compares accumulated charge data against the new cell's reported capacity and throws a mismatch warning. Run one full discharge to hibernate cutoff, then a complete uninterrupted charge to 100% — the warning clears after the learn cycle writes fresh data.
Laptop shuts down at 20–30% shown on the fuel gauge
This happens because the fuel gauge IC on the E7240 is still calibrated to the old cell's discharge curve. The new cell's voltage drops faster under combined CPU and display load than the gauge expects, triggering an emergency shutdown before the display percentage reaches zero. It is not a cell fault — it is a calibration gap. Complete two or three full discharge-to-hibernate and charge-to-100% cycles. After that the gauge IC maps the correct voltage cliff for the new cell, typically around 6.8V under load.