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-   -   onboard charger capacity (http://www.wakeworld.com/forum/showthread.php?t=798611)

alex_hunter 06-14-2013 8:33 AM

onboard charger capacity
 
I've read minimum of 10% of total battery ah should be the charger amp output. I have 420ah total, so can I get away with a 40a charger or should I grab a 50??

david_e_m 06-14-2013 12:14 PM

Quote:

Originally Posted by alex_hunter (Post 1827906)
I've read minimum of 10% of total battery ah should be the charger amp output. I have 420ah total, so can I get away with a 40a charger or should I grab a 50??

You also have to factor in usage and how deeply you are cycling the batteries. If your charger is mostly working in a maintenance capacity then you have more than enough with a 40 amp charger or perhaps even less. If you are routinely discharging to 11.8 volts for example you could go as high as a 50 amp charger but certainly no higher. Also, factor in how much of that A/H capacity is your starting battery, if that is sometimes paralleled with the stereo bank and partially depleted.

David
Earmark Marine

alex_hunter 06-14-2013 1:21 PM

Thanks a lot.


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