Skyscan Goto power tank placement advice

[denodan]

I am getting a Skywatcher 10" goto, tracking Dob. The power it uses is D cell batteries, but got a 17ah Jump Starter. I want to know how you mount it, beside your Skywatcher, on let it ride on the inside of the mount.

I read in the manual as a tip put the battery pack, or powertank on the round base, inside the front forks, so it rides around in RA with the telescope.

My concern is power tanks, and Jump Starters are much heaver then the battery pack, or how does the Skywatcher goto Dob cope with the weight of a power tank, or Jump Starter?