Bus Bars on batteries [RE-wrenches]

[Travis Creswell, Ozark Solar]

Hi Tom,

Agreed for 12 and 24 volt systems but loosing 2 volts on a 48 system can be
easily dealt with.  Remove the bad 2 volt cell (and hope they really will
stand behind that 5 yr non-prorated warranty)  then adjust the charge
controller and inverter parameters for the missing 2 volts until you get the
replacement cell.

Travis
----------
>From: Tom Elliot <telliot at wagonmaker.com>
>To: RE-wrenches at topica.com
>Subject: Re: Bus Bars on batteries [RE-wrenches]
>Date: Mon, Sep 17, 2001, 2:34 PM
>

>Travis, the problem I have with 2 volt cells is that you are trying to
>overcome the shortcomings of "parallelism" by introducing another weakness.
>The failure of any one 2 volt cell in such a large series installation
>renders most, if not all, of the bank, unusable.
>
>What I like about my system is that I can have as many series strings
>connected to my system as I want even if a battery or two should fail I
>still have most of the capacity of my system available.
>
>Tom
>
>----- Original Message -----
>From: "Travis Creswell, Ozark Solar" <ozsolar at ipa.net>
>To: <RE-wrenches at topica.com>
>Sent: Monday, September 17, 2001 9:11 AM
>Subject: Re: Bus Bars on batteries [RE-wrenches]
>
>
>> To me, it's another argument for 48 volt systems and the big two volt
>cells.
>>  I wish I could get more folks to cough up for the big 2 volt cells but
>they
>> are ridiculously expensive and to date I have only one set of the big
>> Surrettes,1104 ah's @ 48 volts (one series string).  They seem to be more
>> charge efficient and have as lower self discharge than the golf carts and
>> L-16's I have seen.  But I have way to prove that.
>>
>> Why are the big 2 volt cells so expensive?  Is there any reason other than
>> low production volumes?  On paper they are a lot cheaper per cycle than
>> L-16's but 10 grand vs. 2 grand is pretty hard to justify no matter how
>long
>> they last.
>>
>> Travis Creswell
>> ----------
>> >From: Tom Elliot <telliot at wagonmaker.com>
>> >To: RE-wrenches at topica.com
>> >Subject: Re: Bus Bars on batteries [RE-wrenches]
>> >Date: Mon, Sep 17, 2001, 1:23 PM

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