I have several 8 cell Antigravity small case batteries (new) that are perfect for midgets. At only a pound and a half it was the easiest and most affordable 10 pounds I saved off of our national midget. There are a couple of different lithium batteries out there, I liked the terminals and construction of these the best. These terminals are strong molded into the top of the cell; the others are thin and have a tendency to break with vibration.
The 8 cell measures 4 1/4” long by 2 ¾” wide and 3 5/8” high, they take up a much smaller footprint then an Odyssey or a Braille. These batteries are a 14.4 volt battery and work with all electronic ignition systems.
The 8 cell batteries are $165 each, or I can do 2 batteries and a charger for $395.