Plastic box for Zippy Li-Po 5000 mA/h 5-cell battary

This is a plastic box for Zippy Li-Po 5000 mA/h 5-cell battary for use it in outdoor condition with my Yaesu FT-817 tranciever. Also it has mount places for voltage regulator for 13.8 volts and for rc-model voltmeter, which can measure each cell voltage. Voltmeter also has small buzzer, which generate alarm signal, if battary close to full discharge. I printed one and active use it for field radio-amateur expedition.