Go battery for air Mini?

I’ve been using the Pilot-Lite 24 cpap battery for several years now but… on a recent trip to the UK it went kaput! Would no longer charge, etc. it just died.

So I’m searching for battery options and looking at the Go-Battery (and others). The Go is smaller and lighter than others (and a bit cheaper). Anyone have any experience with the GO battery or any other recommendations. Must be approved for air travel so not looking for a giant battery pack.

Thanks!

Since the Go battery is probably off warranty,
have you checked on the cost of having it serviced- by a third party-
replacing the dead cells, etc?