E-Skateboard LiPo battery holder (enclosure)

Box for holding 2 5S Lipo batteries on the bottom of a board. 3 slots included for XT90 female jacks to be inserted into the box. Two of the 3 will be used for discharging during the charging process when it uses the balance leads to push voltage in and draws power through the main connection to pull it back down to get the cells level, the 3rd is going to be used as a place for a "switch" in the form of a looped male XT90 with a spark resistor in it. The batteries will be wired in series but