I use a Duracell Ultra Deep Cycle battery like the one shown below. I have this one, 20Ah as well as a 10Ah. Both were purchased for the 2017 eclipse. Have been using them every since. I now use the smaller battery for telescope control and the larger one with an inverter to power my laptop. The laptop uses more kWh that the mount. I use my automotive battery charger which has a setting for this kind of battery. Can run all night with no problems.
Edited by DoodahMan, 02 October 2019 - 11:54 AM.