Join Date: Jan 2003
Location: Maine Coast
Thanked 303 Times in 235 Posts
Rep Power: 18
Re: Battery Charger Rating
It will just take longer to charge the bank. Of course if you have an older charger it may be damaging the batts already.
Also keep in mind that a 200Ah bank is really only 100 usable Ah's from a full charge, when sailing off the dock and not discharging beyond 50%.
If off cruising your bank gets even smaller because the alt will rarely get it much above 80% state of charge due to acceptance limiting. This means your 200 Ah bank is really only a 60Ah +/- bank when off cruising and charging from the alternator...
It would help to know what charger you have...
-Maine Sail / CS-36T
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