Dell Latitude 7202 Rugged Tablet Replacement Battery 7.4V 3400mAh

Dell Latitude 7202 Rugged Tablet — 7.4V Li-ion Replacement Battery (7XNTR)

This 7.4V, 3400mAh (25.16Wh) Li-ion battery fits the Dell Latitude 7202 Rugged Tablet, Latitude 7212, and Latitude 12 7202. It replaces OEM part numbers 7XNTR, FH8RW, 0FH8RW, 451-BCDH, J7HTX, and J82G5. Physical dimensions are 104.00 x 62.82 x 14.90mm — verify your original part number before ordering.

• Latitude 7202 and 7212 compatibility: These tablets share the same 7.4V two-cell configuration, physical connector, and BMS handshake protocol. The same battery slot and BIOS battery management layer covers both variants, so one cell fits either platform without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a Latitude 7202 unit. The BMS communicated correctly with the Dell EC, accepted a full charge without tripping thermal cutoff, and reported cell data back to the OS without error flags.
• First-cycle calibration on the Latitude 7202: After fitting this battery, run one full discharge until the tablet hibernates, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after a cell swap on Dell rugged tablets.

BIOS reporting poor battery health immediately after fitting a new cell

Dell's EC reads EEPROM data written by the previous cell during the battery learn cycle. When a new cell goes in, that cached data doesn't match the new cell's charge signature, so the BIOS flags health as poor or unknown before it has any real data. This is not a fault with the replacement cell. Run one full discharge-to-hibernate, then a full uninterrupted charge to 100%. After that cycle the BIOS rewrites its learned data against the new cell and the health warning clears.

Tablet shutting down at 20–30% charge shown on screen

This happens when the fuel gauge IC hasn't been calibrated against the new cell's actual voltage curve. The OS is reading a state-of-charge estimate built from the old cell's data, so it shows 25% on screen while the cell is already at its real low-voltage cutoff. The tablet shuts down because the cell voltage has dropped below the BMS floor — not because of a faulty battery. Two to three full discharge-and-charge cycles re-align the fuel gauge IC with the new cell. After calibration, shutdown should not occur above approximately 3.2V per cell (6.4V pack total).