Tornado Battery Contact Connector K40513683

The Battery Contact Connector (part# K40513683) is the contact block the 36V pack seats into on the Tornado Strike TV190-W10-U and the Tornado Zephyr TV570-Q03-U. The factory sheet describes it as the battery contact with ejector spring. It carries every amp both motors draw, which is exactly why it is worth looking at before anyone condemns a battery or a board.

Compatible Models for the Battery Contact Connector

• Tornado Strike TV190-W10-U cordless upright vacuum
• Tornado Zephyr TV570-Q03-U cordless upright vacuum

This part is not exclusive to the Strike. Tacony’s parts records list part# K40513683 against two machines — the Strike TV190-W10-U and the Zephyr TV570-Q03-U — which is why the title carries the brand rather than a single model name. The two machines use the same battery pack and the same contact block.

What the Battery Contact Connector does

The block holds the power and signal contacts that meet the pack’s terminals, backed by the spring that helps push the pack clear on release. Contacts that stay clean and sprung make a low-resistance joint; contacts that have arced, corroded or lost their spring pressure make a joint that heats up and drops voltage under load. The machine reads that as a weak or faulty pack.

Signs the Battery Contact Connector needs replacing

Suspect the contacts when a known-good battery reports a fault, when the machine cuts out under load but behaves on a bench with no brush resistance, or when a pack that charges fully gives a short run time. Take the pack out and look: discolouration, pitting or a burnt smell at the contacts, a pack that rocks in its slot, or a battery that no longer ejects cleanly all point here. A contact block that is visibly arced should be replaced, not cleaned.

Fitting the Battery Contact Connector

Remove the battery and leave it out of the machine. Release the wiring at the connector rather than pulling the leads, and note how the block locates before you free it. Fit the replacement so the contacts sit square to the pack’s path, reconnect the battery cable set, then slide the pack in and out several times by hand to confirm it seats fully, latches, and ejects without help.

Twin City Vacuum has been selling and servicing Tornado equipment since 1956. You can browse the rest of the machine on our Tornado Strike parts pages, and the manufacturer publishes specifications at tornadovac.com.

Frequently Asked Questions

My battery shows a fault on this machine but works on another. What should I check?

The contact block first. A pack that is fine elsewhere and faulty here is usually telling you the joint is bad, not the cells. Look for arcing, corrosion or weak spring pressure at the contacts before spending money on a battery.

Does this include the ejector spring?

Yes — the factory sheet describes part# K40513683 as the battery contact with ejector spring, and it is supplied as that assembly. The battery ejector itself (part# K41011170) and the slider (part# K50394600) are separate parts.

Can I clean up burnt contacts instead of replacing them?

Light tarnish can be cleaned. Pitting or arc damage cannot — the surface is destroyed, resistance stays high, and it heats up again quickly. Once contacts have arced, replace the block.

How do I order the Battery Contact Connector (part# K40513683) or get help?

You can add the Battery Contact Connector (part# K40513683) directly to your cart on this page, or call us at 763-535-0770. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tornado equipment since 1956 and can help confirm the right part for your machine.

Questions? Call us at 763-535-0770 or visit us at 5415 West Broadway, Crystal, MN 55428.