Battery part numbers derived from linuxhw/DMI, licensed CC-BY-4.0. Covering 1,229 verified models.

Finding the right replacement battery — one number matters

Most laptops that still have a removable battery use one of a small handful of OEM part numbers per model — but the same model name can legitimately ship several different suppliers, or even several different capacities, over its production run. Buy the wrong one and it either doesn’t fit the latch, or it fits but under-delivers on runtime.

This checker answers that question for 1,229 laptop models using thousands of real hardware reports: the part number(s) actually seen in the field, the manufacturer, the capacity in Wh, the voltage, and the chemistry.

Why we show more than one part number

Field reports for the same laptop model frequently show two or three different part numbers in the same battery slot. That is not conflicting data — it usually means the manufacturer sourced the same battery from more than one supplier (or across manufacturing revisions). The part numbers we list for a slot are in practice interchangeable OEM options for that slot — but still confirm against the number printed on your existing battery before ordering.

Why the capacity can vary within one model

Some laptops — especially business machines with a swappable rear battery — were sold with a choice of capacities, say 24, 48, or 72 Wh, depending on how the buyer configured it. When we see multiple capacities in the field for the same slot, we show all of them. Match the Wh number on your existing battery’s label, not just the part number prefix.

Check your own machine in thirty seconds

On Windows, open a terminal and run powercfg /batteryreport, then open the HTML report it generates — it names the battery’s manufacturer and model. On Linux, run upower -i /org/freedesktop/UPower/devices/battery_BAT0. The surest method on any laptop is the label printed on the battery itself, visible once you remove the back panel — always confirm the part number there before ordering.