We're using these square lithium batteries for our project, but the problem is that the leads are incredibly fragile. They break off almost immediately leaving us with a virtually useless battery. Unfortunately, these are the only ones that fit with the product and have the right voltage.

See here for the data sheet: http://www.gmbattery.com/dl/cp4/CP/CP505050.pdf

Does anyone know of any sort of connectors or cases that would suit a battery with tabs like these? I was thinking something along the lines of the cases that are used to store AA batteries, but more oriented for the shape of this battery. Any help would be appreciated.

Connectors are preferred over a case because they would be good for external testing where the leads are under a lot stress from constant attaching and removing

Thanks!

 

You should spot weld them to a suitable bus/lead or solder to wires and then cover with shrink tube for support.