There are many useable batteries that die an early death by being part of a pack where one cell dies. I have scavenged many of these packs and tested each cell, keeping those at 80-90% and have bought battery plastic carcasses for my power tools that have enable me to save a fair amount of $$ over the years. These were all spot welded cells. This indiegogo has cell mounts like flashlight, and cells are pushed into cell sockets and seem to make spring connections. As long as these spring connections are low resistance for the anticipated 5-10 Amp current = excellent idea. I would like similar cell carcasses for all common power tools to be made this way? I suspect battery sales are make lots of $$ for tool makers. The carcasses from Ali-Express use spot welded connections, but ali also sold me a spot welder and nickel straps for this use,

Exactly!

I have a Bosch smart powerpack. Is a specific Bosch connerctor part of the delivery so that I can connect the Gouach Infinite Battery Holder to the plug where normally the Bosch smart powerpack is inserted?

Ralph just told me that no Bosch connector will be supplied. The Bosch connector where the Bosch Powerpack is normally inserted will have to be dismantled and then the Gouach holder cable must be solderded on to it which is very dangerous to do yourself because of short-circuiting, which may cause explosion of the battery and heavy fire.

It seems Ralph is wrong. Alexandre from Gouacho just mailed me:

"there will be directly a Bosch female connector to the back of the battery so you can plug the gouach battery the same way you put a powerpack. I'll send pictures very soon"

@oulipo What kind of aluminum case do you have that withstands the temp of a burning lithium cell?

Check it out here: https://www.youtube.com/watch?v=tJETffg0kFc&t=2s