Re: [Electric Boats] Re: Long time silent group member asking for the impossible battery answer?

 

I saw an interesting switching scheme for battery powered systemshttp://www.redrok.com/ev.htm

 

-- He must be cut off from the past. . . because it is necessary for him to believe that he is better off than his ancestors and that the average level of material comfort is constantly rising.
--George Orwell, 1984

From: Andrew Gilchrist <andrew@fastelectrics.com>
To: electricboats@yahoogroups.com
Sent: Monday, March 12, 2012 4:46 PM
Subject: Re: [Electric Boats] Re: Long time silent group member asking for the impossible battery answer?

 

Chris

There are some issues with using multiple batteries in parallel. Differences arise over time ( due to slight mismatches in internal resistance. Replacing damaged batteries with new and Internal resistance differences can create further issues.

The optimum is a  single battery where charge and discharge affect all components equally.

However redundancy may be more usefull to you. In that case keep the paralleled batteries to as low a number as practical

Andrew 

On 3/13/2012 8:02 AM, chris kelly wrote:

 

Thanks Eric.

I guess five batteries would require five times the maintenance and maybe one failed battery is only a one fifth a loss in capacity.

good point about choosing batteries that fit the charge regulation system.

Thanks

 

www.christopherkellyfurniture.com

--  AJ Gilchrist Fastelectrics 0419 429 201

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