According to NHRA guidlines or rules it says this

If you do choose to mount the battery in the trunk, it must be mounted to the frame or frame structure with a minimum of two 3/8-inch diameter bolts and a metal hold-down strap. The supplied J-hooks are not allowed. Also, the battery must be completely sealed from the driver compartment. This means a bulkhead must separate the trunk from the driver compartment. The battery can also be located in a sealed metal box, constructed of a minimum of .024-inch-thick steel or .032-inch-thick aluminum.


Any car with a relocated battery must be equipped with a master electrical cutoff capable of stopping all electrical functions, including ignition. In other words, if somebody hits the master switch, it must shut off the engine as well as the fuel pumps and so on. The switch must be located on the rear of the vehicle, with the off position clearly marked. If the switch is a push-pull type, push must be the motion that shuts off the switch. Plastic or keyed-type switches are prohibited.
Maybe the tech guys have their own set of rules