:h this is for the TT group. i have been looking to add an extra battery bank to the tub. when we purchased it. it had already been converted from a single 12 to dual 6. yea i know we haven't even ...
Sam, It is all about battery acceptance rate. Few batteries can take even 40 amps of charge current beyond the first few minutes. As the batteries accept charge, the current diminishes.
Also, we shouldn't be charging "dead" batteries. I'm guessing you used that term to identify a battery that is low in State Of Charge. No foul.