Today while picking out/pricing equipment for a new system, the dealer at the store that I was at showed me what he called a "power cell" that can be used in place of a cap.

Any one using these devices, if so, how well does it work for you ??.

My planned system in question is two amps, 150x4 and 780x1, a rewound alt. and Optima battery, and wired with 1/0 gauge power cables both + and -.