There in lies the rub.
Laptops kill them quickly for the size I have, but operating just the mount without slewing, USB hub to keep the data flowing for autoguiding and camera download, in my case the SX-h9 (and yes the TEC was still running) worked an absolute treat. Once the exposure is done the mount and autoguiding can hum along quite nicely for an extended period without any problems. It was probably close to 10 min for the longest outage and I was able to keep going including keeping the camera going with np at all.
I will be taking a deep cycle battery, trickle charger and inverter next year. Just to be on the safe side.
