Amp-Hours

[Pete Masterson]

If they are 12 v batteries, yes. For example, I have 6 model 4D 12v
batteries. They have about 220 AH capacity (under ideal
circumstances) so there are 6 x 220 = 1320 AH available. Of course,
most batteries should not be discharged below 50% (deep cycle AGMs
can go to 40% without damage), so you must divide the total AH by 2
to calculate the practical available AH (1320/2= 660 AH). Of course,
the actual discharge rate will also affect the true number of amp
hours any set of batteries can deliver.

If you have 6 v batteries (on a 12 v system), then you have to divide
the number of batteries by 2 -- in other words, Six 200 AH 6 v golf
cart batteries will deliver the equivalent of three 12 v 200 AH
batteries. Some of the older BBs carry 8 6V golf cart batteries of
about 200 AH, so they have about 800 AH at 12 v or about 400 AH when
you limit discharge to 50% as is suggested to not damage the batteries.

Pete Masterson
'95 Blue Bird Wanderlodge WBDA 42
aeonix1@...
On the road at Lockhart, Texas



On Nov 25, 2007, at 2:46 PM, Scott Forman wrote:

> If I want to determine the total amp-hour capacity of my battery bank,
> do I multiply the AH rating of each battery by the number of
> batteries?
>
> Scott Forman
> 86 PT38
> Memphis