The mount will chew through rechargeable batteries. If you're taking it to the field then get one of those larger powerbank / powertanks. If its in the back yard, get a 12v power supply and an extension cord. I bought a 12v PS off amazon 18 months ago and haven't looked back.
Mounts: Explore Scientific IEXOS-100 w Celestron CG5 tripod, iOptron CEM 40
Scopes: Explore Scientific FCD-100 ED-102CF, Various Canon lenses, ZWO mini-guidescope, StarField 60mm guide-scope.
Camera: ASI120MM Mini (mono), Altair GPCAM 130
Control PC: Intel NUC
Loc: 44 -79