alpine tech 2x 18650 1590G+ battery tray with cover

remixed for the need to fit the alpinetech 1590G+ box with left side volt meter cut out or for use with the standard g+ no volt meter cut out.

added width to the left side of the tray bottom without compromising the the battery tray size and also extended the top portion of the tray bottom to the inner dimensions of the 1590G+ box offered by alpine tech.

added corner supports for the top cover to rest on and for an easy way to secure it in place with glue.

outer corners have been roun