cursed battery adapter AA

I needed something to recharge my old tablet. So i adaptered a battery charger to a battery dummy that has two loose cable ends that I connected to my tablet. It's the size of a AA battery.

For this to work you will need a M3 screw, nut and washer. Solder the plus cable to the nut. Insert the screw into the hole and tighten the nut on it. Then add the washer in the small slit on top of the battery and sloder the negative cable to it. A bit of heat can help to place the washer perfectly.