VANAGON archives -- September 2009, week 1 (#414)

Date:         Sat, 5 Sep 2009 09:55:16 -0700
Reply-To:     mark drillock <mdrillock@COX.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         mark drillock <mdrillock@COX.NET>
Subject:      Re: Run time to charge Aux battery
Comments: To: Rocket J Squirrel <camping.elliott@GMAIL.COM>
In-Reply-To:  <4AA294E6.2060404@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Check that math!

I think he needs a lot more battery capacity than that.

Mark

Rocket J Squirrel wrote:
> Hi Malcolm.
>
> A 24-hour run of your refrigerator, if it draws 7A, and has a duty cycle
> of 2/10 (two minutes out of ten) will consume 4.8 amp-hours (Ah) per day.
> So if your numbers are correct, and if you wanted to never discharge your
> deep-cycle batteries too deeply (say never less than 80% discharged so
> they last longer), then a five-day run of (call it) 5Ah per day would
> require 25Ah, and a battery with a 30Ah rating should do the job.
>
>..............

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