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Manufacturer: Dell Last updated: 2026-09-29
Dell 51KD7 Replacement Battery Review
Dell 51KD7 replacement battery, the 42Wh 3-cell 11.4V long-cable pack for the Dell Chromebook 11 3180, 3181, 3189 and 5190, and for Chromebook 3100 and 3400 units built with the longer battery cable.
Parts-People lists two 42Wh batteries for the Chromebook 3100 that differ only in cable length. This is the long-cable version; the short-cable version is Dell JPFMR. Check the battery you remove before ordering. Older labels for this part include FY8XM, Y07HK and YWD3C.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Chromebook 11 3180 and 5190 owners
- Chromebook 3100 units with the long battery cable
Not for
- Chromebook 3100 units built with the short-cable JPFMR
Specifications
What these specs mean| Brand | Dell |
|---|---|
| Battery Model Code | 51KD7 |
| OEM Spare Part Number | 51KD7, 051KD7 |
| Nominal Voltage | 11.4 V |
| Cell Count | 3 |
| Series Configuration | 3S |
| Capacity Wh | 42 Wh |
| Capacity Basis | OEM Label |
| Compatible Models | Dell Chromebook 3100 (long battery cable), Chromebook 3100 2-in-1 (long battery cable), Chromebook 3400 (long battery cable), Chromebook 11 3180, Chromebook 11 3181, Chromebook 11 3181 2-in-1, Chromebook 11 3189 2-in-1, Chromebook 11 5190, Chromebook 11 5190 2-in-1 |
| Replaces Part Numbers | FY8XM, Y07HK, YWD3C |