Battery Box with cover for 12 AA batteries

This is a bigger version of the original battery box. It holds 12 AA batteries which makes a voltage of 18V for batteries or 14.4V for accumulators.

**Features**
* 4 clamps at the bottom
* extra strong housing (2mm)
* fast and easy battery removal
* fixation edge for battery connectors

I recommend the usage of Keystone battery connectors (double and single).
The cover might still need some improvement because it bends slightly upwards.