Here is my version of a starter box on wheels. I only need a telescoping handle from a suitcase. The starter box has a 12V. tractor battery in the bottom. The upper half hinges so you can remove the battery. I can use it to start prop, ducted fan and turbines. Charge batteries, glow plug power, power fueler, defueler, glow, gas, Kerosene and it holds the propane bottle at the top. I use a hand wand starter to start the turbines. I'm sure you could make provisions for a scuba tank. The overall size is 8 1/2"w x 9"d x 24"h.