How much converter/charger is really needed?
I have a pair of NAPA 9824M Marine/RV batteries with a 20 hr rating of 79AH each, wired in parallel. Is there, really, any advantage in going from a 45 amp (PD4645V) converter/charger to a 55 amp (...
Forum Discussion
Ok this is from teh manual for my Prosine 2.0 Inverter/Charger
Maximum charge rate should be no more than 30% of the C/20 amp hour capacity. YOu said that your batteries are 79AH each (Group 24?) or 158 AH total
So 0.3 (30%) times 158 = 47.4 The 45 amnp is the proper converter. Bigger has no advantage save to the battery salesman.
NOW if you swapped those out for a pair of GC-2 in series. 220 anp hour give or take .3 times 220 = .66 So you could go up to 60 amps if you upgraded the wires.
Maximum charge rate should be no more than 30% of the C/20 amp hour capacity. YOu said that your batteries are 79AH each (Group 24?) or 158 AH total
So 0.3 (30%) times 158 = 47.4 The 45 amnp is the proper converter. Bigger has no advantage save to the battery salesman.
NOW if you swapped those out for a pair of GC-2 in series. 220 anp hour give or take .3 times 220 = .66 So you could go up to 60 amps if you upgraded the wires.
