Monday, December 21, 2009

Re: [Electric Boats] My conclusion

 

Eric,
 
6v batteries store a little more energy per pound and per $ than 12v.  Check the RC (reserve capacity, minutes of 25 amp drain) of comparable batteries.
 
Also a series string of 6v batts are less complex to wire than a series/parallel string of 12v and the simple series string is guaranteed to discharge each battery equally while the series/parallel string is not.
 
Denny
 
----- Original Message -----
From: Eric
Sent: Monday, December 21, 2009 2:23 AM
Subject: Re: [Electric Boats] My conclusion

 

Denny,

Why would 6V batteries provide twice the range? Are you referring to batteries that have twice the amp hour rating? If you're saying that a 6V bank that occupies twice the space, weighs twice as much and is roughly twice the cost will provide twice the range, then so would (8) 12v batteries that have half the amp hour rating of the 6v alternative.

Fair winds,
Eric

--- In electricboats@yahoogroups.com, "dennis wolfe" <dwolfe@...> wrote:
>
> That sounds like a great solution - get AGM batteries and a good charger that will put out at least 10 amps at 48v and you will have trouble free silent non-polluting boating. (4) 12v gp31 batteries would probably give you 2-3 hours at 4-5 mph, (8) 6v would more than double that range.
>
> Denny Wolfe
> www.wolfEboats.com
>

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