Dell Inspiron 1525 Replacement Battery 11.1V 4400mAh GP952

Dell Inspiron 1525 / 1526 / 1545 / 1546 — 11.1V Li-ion Replacement Battery (GP952)

This is an 11.1V, 4400mAh (48.84Wh) Li-ion battery for the Dell Inspiron 1525, 1526, 1545, and 1546 laptops. It replaces OEM part numbers GP952, GW240, GW252, RN873, X284G, and a range of Dell 312- and 451- series cross-references. The cell fits the standard three-cell bay on these Inspiron models and connects via the original locking tab and data pin connector.

• Inspiron 1525/1526/1545/1546 platform fit: All four models share the same 11.1V battery bay geometry, identical six-pin data connector, and the same BMS handshake protocol. One battery covers the full group — no adapter or modification needed.
• Bench tested on actual hardware: We ran this cell on an Inspiron 1525 and 1545 unit. The BMS completed its charge handshake without error codes, the fuel gauge IC accepted the new cell without stalling mid-charge, and the pack reached full capacity across three consecutive cycles.
• First-cycle reset on Dell Inspiron: After installing, run one full discharge to the hibernate cutoff, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap on this platform.

BIOS reporting battery health as poor after replacement on Inspiron 1525/1545

The Dell BIOS on these Inspiron models reads health data stored in the battery's EEPROM. When you swap cells, the EEPROM on the new pack carries factory-default values that don't match what the BIOS recorded from the previous battery. The BIOS flags this mismatch as a degraded or unknown battery — even when the new cell is fully functional. Running one complete discharge-to-hibernate followed by an uninterrupted charge to 100% resets the learn cycle and synchronises the EEPROM data with the BIOS. After two to three cycles, the health indicator normalises.

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

This happens when the fuel gauge IC hasn't yet calibrated against the new cell's actual voltage curve. The IC was mapped to the old cell's degraded discharge profile, so it misreads the remaining capacity and triggers a low-voltage shutdown earlier than the display percentage suggests. It is not a fault with the replacement battery. Run two to three full discharge-and-charge cycles without interruption — after calibration, the cutoff will align with the actual remaining capacity. If the shutdown persists after three cycles, check that the BIOS is reading 11.1V at the battery status screen.