Posted May 10, 201213 yr i currently ordered a btl 18 with 2100w amp and i also got a new high output alternator and kinetic HC 1800 high current power cell to replace my standad battery and was wondering if i need another battery?? just confused because do i need one under my hood and one next to the amp or just one? and if i need two can i get one smaller one for the back?
May 15, 201213 yr It will definitly help with voltage drop to the amp. Is it nessecary, no for best sound and output yes.