Dell Latitude 9510 2-in-1 Replacement Battery 11.4V 7250mAh

Dell Latitude 9510 / 9520 2-in-1 — 11.4V Li-Polymer Replacement Battery (10R94)

This is an 11.4V, 7250mAh (82.65Wh) Li-Polymer replacement battery for the Dell Latitude 9510 2-in-1 and Latitude 9520 2-in-1. It replaces OEM part numbers 10R94, 89GNG, and TVKGH. Both models share the same battery bay, connector pinout, and BMS communication protocol, so a single cell covers either unit.

• Latitude 9510 and 9520 2-in-1 compatibility: Both the 9510 and 9520 use the same 11.4V three-cell Li-Polymer architecture, identical connector, and the same SMBus BMS handshake sequence. Dell's 2-in-1 hinge design places the battery across a narrow bay — at 325.00 × 122.45 × 9.00mm, this cell fits that bay without modification.
• Bench tested on actual hardware: We ran this cell on a Latitude 9510 2-in-1 and confirmed the BMS completed its initialisation handshake, reported cell chemistry to the OS correctly, and held voltage under combined CPU and display load without triggering premature cutoff.
• Post-install calibration: After fitting, run the laptop down to hibernate-cutoff under normal use, then charge uninterrupted to 100%. This single full cycle resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in Dell Power Manager after every cell swap.

BIOS reporting poor battery health immediately after replacement

Dell's BIOS reads health data from EEPROM registers on the battery controller — not from measuring the new cell directly. When a replacement cell arrives, those registers still carry the old cell's degraded history. Dell Power Manager flags the battery as poor before it has run a single cycle. One complete discharge-to-hibernate followed by an uninterrupted full charge rewrites the learn-cycle counters. After that cycle, the health status in both BIOS and Dell Power Manager updates to reflect the actual condition of the new cell.

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

This is a voltage cliff failure, not a fuel gauge error. Under full CPU and display load, the cell voltage drops faster than the fuel gauge IC can track — the battery hits the BMS low-voltage cutoff while the OS still shows 20–30% remaining. It happens most often when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. Run two full discharge-to-hibernate cycles to let the gauge IC map the new cell. After calibration, the reported percentage at shutdown should fall below 5%.