Well I have a 390amp HO Alternator, 2 750cca Gel AGM Batteries, and a 1150CCA SuperCapacitor. I was running a 5000 watt DS18 GF-5K1 amplifier. On extended demos I would drop to around 12.2-12.4V. After adding the Lithium I am now running a DS18 GF-8K1 , 8000 watt amplifier and I never drop below...