Ginormous battery rack [RE-wrenches]

[Travis Creswell]

Surrette 2 KS 33PS = 1766 AH @ 20 hrs x 2 strings (assumed a 48v system, I
hope) = 3532 Ah

3532 Ah/5 = 706 amps = a ginormous solar array or wind turbine, or
generator/grid driven battery charger (as in several 3 phase forklift style)
or any combination of the above.

I would agree that if you don't regularly at least get close to that
charging rate the batteries are going to be in big trouble and quickly.
>From personal experience I can attest that Surrettes are particularly
unforgiving of not being charged at c/5 or better.

Best,

Travis Creswell
Ozark Energy Services

-----Original Message-----
From: Allan Sindelar [mailto:allan at positiveenergysolar.com] 
Sent: Monday, October 02, 2006 10:20 AM
To: RE-wrenches at topica.com
Subject: Re: Ginormous battery rack [RE-wrenches]


Ezra,
Minor correction here with large consequences to the question at hand...a
C/5 rate is "capacity at a five-hour rate", or 20% of the battery's amp-hour
rating, rather than 5%.
Allan at Pos Energy

----- Original Message ----- 
From: "Ezra Auerbach, DragonSun Consulting" <ezra at lasqueti.net>
>
> I totally agree with Drake, your next challenge will be charging
> those batteries. You need an on-site ability to apply C5 (5% of the
> battery banks amp hour rating at the 20 hour rate).


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