Im switching out a 45amp battery charger to a 100 amp (12 volt). Between the charger and the battery i have about 2 feet of 6 awg wire to the breaker box where it continues with the main 4/0 awg battery cables another 3-4 feet to the battery. This was fine for the 45 amp charger, but will it still be ok for the 100 amp? I just wanted to confirm the short 6awg run will be ok with the 100 amps. I did find this chart online that tells me it will be (link below), and did a voltage drop calculation that 100 amps in 2 feet of 6awg has just 1-2% voltage drop. However im also reading 6awg wire is rated max is 55 amps. So what does everyone think?