A couple of weeks ago I (well, Bessie the blue Jazz) had a flat(ish) battery and didn't have enough oomph to turn over. It was my own fault, so not complaints just an annoyance.
Mr AA man came out and did a boost start after checking the battery was OK. All well and good. But how to cope if I do another
ID 10 T mistake and flatten the battery again?

Its not a bad bit of kit. 18AH battery and all the odds and sods including an air compressor for £70. Works as described (well, I haven't needed to boost start the battery yet) and the case is neat enough to slide under one of the front seats. Its a 'just fits' fit. so it won't slide out and rattle around.
Its a handy bit of insurance I say.
LINKY