i searched threads and have found mixed answers, upgrading junk factory battery, should i use yellow top,someone said that they never fully recharge and junk, and dont last, just get a diehard, and add a second battery for amps 500/1 300/4 jl.... is the yellow top junk or not, they tried to sell me a shuriker 900 battery to add for amps, i already got the optima, might be able to return, optima..

 

800 watts rms?
you should be ok with the big 3 and that yellowtop i would guess, i ran 1000 on my stock alt/batt and didnt have serious dim problems