Physical attachment does not prove electrical compatibility.
Step-by-step check
- Disconnect power
Switch off and unplug the vacuum before inspecting filters, brushes, or attachments. Follow the model manual for battery removal.
- Use matching ratings
Do not pair a different-voltage battery or charger by changing a connector. A powered head also needs the correct electrical interface.
- Stop on warning signs
If a pack overheats, swells, smokes, or fails to charge normally, stop using it and seek manufacturer guidance. Avoid guessing from appearance.
A real fit-check example
The Shark BU3120 battery case shows why a model name alone is insufficient: two pack generations use different label conditions. A charging stand is also not automatically a charger; Shark XSKCHRGDOC is the stand for listed SV machines. Read the part's role and electrical rating before connecting anything.
Common question
What should I do with a swollen or overheating battery?
Stop charging and using the vacuum. Keep away from combustible material, follow the manufacturer's safety and disposal instructions, and seek appropriate local help if there is smoke or fire. Do not attempt to repair or puncture the pack.
For end-of-life lithium-ion packs in the US, use a dedicated battery collection or household hazardous waste option. See the US EPA battery guidance ↗; do not put lithium-ion batteries in household trash or curbside recycling.
Next step
Use the model and part search with the complete code. A missing result means our catalog has not established a fit.