Looking at the high expense for lithium batteries I decided to try out NIMH batteries in my Super Turbo 800. You can see the results in the video above. The cost for these NIMH packs was only $220.
The stock batteries allow the system to draw +1,200 watts of power. Running my NIMH batter packs the highest peak I could get was closer to 1,000 watts. Bear in mind that these were home made packs and you might have more success with professionally made packs.
The demand of a system that wanted 1,200 watts resulted in damaged packs because the tabs melted right into the cells.