If he's looking for MOAR POWAR then I wonder if he's got his gear hooked up to a 20A circuit?
Wait, nevermind. He'll never need MOAR POWER if all he's doing is charging his SLA batteries.
If I am reading it right he's got:
2 x SLA batteries -> 2 Farad cap -> "industrial grade, slow switching power inverter that generates pure sinewaves" -> audio gear
extra points awarded for a "car audio" cap with fricken led's on it.