[No Battery desired] - Not like most trackers that need to be billed each individual number of times, this one particular runs specifically off your vehicle's electric power. Unit goes to slumber a few minutes once the ignition cuts off. Set it and ignore it. The moment I slipped this https://www.trackerfit.co.uk/blog/stolen-car-recovery-why-24-7-monitored-trackers-make-a-difference/