The Lightning audio 1500 Watt capacitor was installed to eliminate the light dimming and peak power drops caused from large power draws on the stock style batter by the amp. . It powers a Pioneer 820 Watt dual channel bridged amp that sends the power to a set of 12" Zeus series subs by HIFONICS. The install of the capacitor was easy and i have had no issues with it since the installation. I would recommend this part to others who are having light dimming issues or peak power drop off but who can't afford a high dollar battery.