Which Ecovacs models does this battery fit?

The listing names Ecovacs sweeper and vacuum cleaners but does not give a specific model. Check your vacuum's model number and battery part number against the pack before ordering.

Is this an original Ecovacs battery?

No. It is an HQRP third-party replacement, not an Ecovacs original part. Expect it to work as a substitute rather than to match Ecovacs' own cells.

Why does the listing mention Dyson V7 to V11?

The compatibility notes name both Ecovacs and Dyson V7, V8, V10 and V11, which conflict. Treat the listing as unreliable on fit and confirm the correct pack for your machine.

How long will it run per charge?

No runtime figure is given. Third-party packs often run shorter than the original, so expect similar or somewhat less cleaning time per charge.

Is it worth replacing the battery instead of the vacuum?

If the vacuum still cleans well and only the battery has faded, a replacement pack is the cheaper route. If the motor or brushes are also worn, a new vacuum makes more sense.