The XBTR625KSLN battery fit depends on the BU3120 generation. Check both the battery code and voltage label before buying.
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Exact part and model check
| Existing label | Manufacturer result |
|---|---|
| 18V or XBATR525SL / BATR525SLN | Does not fit XBTR625KSLN |
| 21.6V or XBTR625KSLN | Manufacturer lists as compatible; confirm the full label |
| Unreadable or different label | Compatibility not verified; ask Shark support |
Check your existing BU3120 battery label
Choose the values printed on your original pack. This guide does not inspect the label for you.
Fit status
See the manufacturer source below. The status applies to this exact part number and model, not every part in the same series.
How to verify before ordering
- Read the complete BU3120 code and existing battery model on the machine and pack.
- Compare the printed rating: the official listing excludes 18V or XBATR525SL/BATR525SLN and names 21.6V or XBTR625KSLN as the compatible configuration.
- If either label is unreadable or differs, stop before ordering or charging a replacement and ask Shark support.
Source checked 2026-10-28
SharkNinja: Auto-Empty System Battery Pack XBTR625KSLN ↗.
Manufacturer listings can change. Verify your machine label and the current product page before buying.
See the part record for the complete manufacturer-listed model set.
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