Are they three cells in parrallel or are they one big cell?
--- On Thu, 12/3/09, Brian Teitelbaum <bteitelb...@aeesolar.com> wrote:
> From: Brian Teitelbaum <bteitelb...@aeesolar.com>
> Subject: Re: [RE-wrenches] Strings and series of batteries
> To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
> Date: Thursday, December 3, 2009, 2:11 PM
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> #yiv1990029547 p.MsoNormal
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> Hi Jamie,
>
> Have you seen any change in
> cycle life by having the three cells
> in the L16 connected in parallel instead of series? Just a
> question that has
> been on my mind for a while.
>
> Brian Teitelbaum
>
> AEE Solar
>
>
>
>
>
>
>
> From:
> re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
> Behalf Of James
> Surrette
>
> Sent: Thursday, December 03, 2009 12:02 PM
>
> To: RE-wrenches; jry...@netscape.com
>
> Subject: Re: [RE-wrenches] Strings and series of
> batteries
>
>
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>
>
> Hi
> Jeff,
>
>
>
>
> Not
> to plug but we (and some other vendors) have 2V L-16's
> on offer. So you
> can get 1000AH (C/20) in a series string in this more
> manageable size.
>
>
>
>
> Regards,
>
>
>
>
>
> Jamie
>
>
>
>
>
> James Surrette
>
>
>
> Surrette Battery Co. Ltd
>
> 1 Station Rd.
>
> Springhill, NS, CAN
>
> B0M 1X0
>
>
>
> Direct: 902.597.4027
>
> Fax: 902.597.8447
>
>
>
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>
>
> >>> "Jeff Yago"
> <jry...@netscape.com> 12/3/2009 1:16
> PM >>>
>
>
>
> Boy, this string on strings and series of strings is
> starting to string into a
> very long list of string related emails!
>
>
>
> We also avoid multiple strings of batteries, but sometimes
> this is required to
> get the right combination of system voltage and amp-hour
> capacity. We
> also agree that 3 or more strings is not good, and we have
> seen many cases
> where one string stays much less charged than the other
> strings on older
> systems as terminals corrode and individual battery cell
> conditions start to go
> south.
>
>
>
> However, for safety reasons we install a catastrophic
> in-line fuse in each
> separate string that is sized to help prevent a
> "melt-down" when one
> string tries to dump into another string that has a failed
> battery or shorted
> cell. Not sure how fail-safe this is and would
> not protect against
> small amp flows between strings due to battery temperature
> differences, but
> feel its better than nothing.
>
>
>
> I also point out that for remote off-grid installations you
> sometimes have to
> use smaller and easier to handle L-16 size batteries, as
> its hard to pack in
> several one-ton tray batteries with no roads using a gater,
> so this means you
> still need multiple strings of batteries in parallel.
>
>
>
> Jeff Yago
>
>
>
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