For those of you who have been following along with Fred’s Build, I have now added the mounts for the battery packs.
I have two mounts, each holding up to a 4AH 20V battery, that 80 Watt Hours per battery, compared to the 72 Watt Hours of the 6 volt 12 Amp hour gel-cell battery.
Having the two means I can change the batteries one at a time without having to shut down my Inmoov build.

Be warned, my build is being setup to run from a 20Volt supply, do not use this method on a standard build without adding in the requires Buck type SMPS of high enough currents to run your system.