Dell Latitude 13 7350 Replacement Battery TM9HP 7.4V 2700mAh

Dell Latitude 13 7350 — 7.4V Li-Polymer Replacement Battery (TM9HP)

This is a 7.4V 2700mAh (19.98Wh) Li-Polymer battery for the Dell Latitude 13 7350 ultrabook. It replaces OEM part numbers TM9HP, FRVYX, 8K1VJ, J84W0, and R89JJ. If your original cell is degraded and the laptop won't hold a charge off the charger, this is the direct swap.

• Latitude 13 7350 fitment: The 7350 uses a slim Li-Polymer pack with a specific connector orientation and BMS handshake tied to the Dell EC firmware. This cell matches the physical format, pin layout, and EEPROM parameters that the EC expects on boot.
• Bench tested on actual hardware: We cycled this cell through full charge and controlled discharge on a Latitude 13 7350 unit. The BMS communicated correctly with the EC, charge termination triggered at the expected voltage, and no fault flags were logged in the battery status register.
• Post-install calibration on the 7350: 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 in Dell Power Manager after every cell swap.

BIOS reporting battery health as poor immediately after replacement

Dell's EC reads health data from the EEPROM on the old cell and caches it. When a new cell installs, the cached data doesn't automatically clear — so the BIOS flags the new battery as degraded before it has run a single cycle. This isn't a fault with the replacement cell. Run the learn cycle: discharge fully to hibernate, then charge to 100% without interruption. After one complete cycle, the EC writes fresh health data and the warning clears.

Laptop shutting down at 20–30% shown on the gauge after the swap

The fuel gauge IC calibrates against the old cell's charge curve. With a new cell installed, the IC's stored curve no longer matches actual cell behaviour — so the reported percentage drifts significantly from true state of charge. Under full CPU and display load, the real voltage hits the cutoff threshold well before the gauge reaches zero. Two to three full discharge-and-charge cycles recalibrate the fuel gauge IC against the new cell's curve and bring the shutdown point back to the correct voltage floor near 6.0V.