Forum Discussion
Salvo
Jun 11, 2013Explorer
Yikes, seems way too high. Pulling a number out of a hat is not allowed. You need an analysis, based on hard facts.
Not sure, I believe a pair of 6V's need 16V at 3A. You can later massage the numbers if needed. Quiescent current could be 0.5A. MPPT efficiency is 90%. The power needed for equalization is:
P_equal = 16V * 3.5A / 0.9 = 62W
We'll derate the panel by 70% and get:
P_panel = 62W / 0.7 = 89W
90W sounds like a good minimum. Compare that to 60% of 220AH = 132W. What's the rational for 60% of AH?
Sal
Not sure, I believe a pair of 6V's need 16V at 3A. You can later massage the numbers if needed. Quiescent current could be 0.5A. MPPT efficiency is 90%. The power needed for equalization is:
P_equal = 16V * 3.5A / 0.9 = 62W
We'll derate the panel by 70% and get:
P_panel = 62W / 0.7 = 89W
90W sounds like a good minimum. Compare that to 60% of 220AH = 132W. What's the rational for 60% of AH?
Sal
HiTech wrote:
Is it a minimum of 60% of amp hours battery bank in watts to be able to equalize flooded 6v golf cart batteries?
Jim
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