Have a look at this! This is our solution to fill the space left for a second battery under the bonnet of the N80 Toyota Hilux, with a Sleek design designed for an easy install & purpose built. We used a Delkor HDC27 Battery, 100 A/H, weighing 23kg, dimensions 305L x 172W x 190H, see link below for this battery. This tray also suits other batteries as well as lithium batteries.