Actually yes im going full power!!! I have made several upgrades on the electrical system to help compensate for all the current draw...Kinetik HC1800 under the hood,Blue top Optima in the rear (temp), as well an upgraded alternator going from 70 amps stock to 165 amp at 1800r.p.m. I also have plans on removing the optima (very soon) and adding some other kind of batteries in the back...the kinetik battery i just bought didnt really impress me as far as power vs dollar. Even after all these upgrades, running one of my 802sx amps at full power will still drop the voltage down to 11.?? Volts. So im really gonna need a couple of batteries that will really talk the talk and walk the walk...but without breaking the bank. Any suggestions on that would be awesome,...ive been experimenting with other brands of batteries as well,..from what i can see most of the batteries ive seen are all AGM batteries (absorbed glass mat). Which is the same exact thing you can find in battery back-up systems as well as wheel-chair batteries and golf cart batteries. By using these batteries i could save money by not buying the "name", but still get the same warranty and performance. But i will have to say the powermaster brand seem to have alot of positives...so i may lean more toward them.