I found it difficult to turn all the small latches in the Lift3 foil, so I made this tool with one end that fits on the battery lock and the battery connector as well as the hooked end which helps release the outside latches.

I printed it in ASA given that it'll probably be outdoors and PLA might deform, but PLA is probably strong enough. I did a 25% infill and printed it with the battery tool side facing up only adding supports to the hook end.