Dell Latitude 7310 2-in-1 Compatible Battery NF2MW 7.6V 6750mAh

Dell Latitude 7310 / 7400 / 7410 / 9410 2-in-1 — 7.6V Li-Polymer Replacement Battery (NF2MW)

This is a 7.6V, 6750mAh (51.3Wh) Li-Polymer replacement battery for the Dell Latitude 7310, 7400, 7410, and 9410 2-in-1 convertible laptops. All four models share the NF2MW cell platform, the same connector pinout, and the same BMS handshake protocol. Drop voltage or capacity specs vary slightly across Dell's listings, but 7.6V and 6750mAh are the confirmed figures for this part.

• Latitude 7310 / 7400 / 7410 / 9410 2-in-1 platform fit: These four models share a common battery bay geometry, the same five-pin SMBus connector, and identical BMS authentication handshake — which is why a single NF2MW cell services all of them without firmware conflict.
• Bench tested on actual hardware: We ran this cell through charge-discharge cycles on a Latitude 7310 2-in-1. The BMS authenticated cleanly, BIOS accepted the cell without fault codes, and the fuel gauge IC began tracking state-of-charge correctly after two calibration cycles.
• Post-install learn cycle on Dell 2-in-1: 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 on every fresh cell swap in this platform.

BIOS reporting poor battery health immediately after replacement

The Dell BIOS reads EEPROM data embedded in the battery's BMS to assess health. A new cell ships with factory EEPROM values that don't yet match the BIOS's learned charge profile from the old cell. This mismatch triggers a "battery health poor" or "consider replacing" flag even though the cell is brand new. One complete discharge-to-hibernate followed by an uninterrupted charge to 100% allows the BIOS to rewrite its battery learn table against the new cell's actual chemistry. After two cycles, the health flag clears.

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

This happens when the cell cannot sustain voltage under combined CPU and display load at lower states of charge — the voltage drops below the BMS cutoff threshold before the fuel gauge reaches 0%. It is a calibration problem, not a faulty cell. The fuel gauge IC built into the NF2MW BMS needs at least two full discharge-to-recharge cycles against the new cell to map the actual voltage curve. After calibration, the shutdown point aligns with what the screen displays. If it persists after three cycles, check that BIOS battery care mode is not capping discharge at a higher floor — disable it under BIOS → Power Management, then re-run calibration from a full 100% charge.