Don’t really know what to call for what I’m looking for, but my company (the MOD) have banned charging electric cars off service means. Terrible decision on my opinion. However, many barracks are in isolated locations - like I am - so wondered is there a battery / power pack that exists? Similar to a power pack for a phone etc but a big one for a car? My theory is I’d charge that, than charge the car off that. Repeat all week, then drive home on a Friday night…..