The Pro X-SP PriorityStart! automatic battery power protector from BLI International now has new circuitry with higher values, an improved mechanical drive system, surge protection and lower reconnection threshold. PriorityStart! automatically disconnects battery drains due to two-way radios, computers, lights or any of the many electrical accessories added by fleets. Just operate the headlights switch to automatically reconnect the battery power. Because PriorityStart! operates only when needed, to prevent a dead battery, it is always on duty providing starting power.