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Re: [OM] More on the 12 volt SLA battery

Subject: Re: [OM] More on the 12 volt SLA battery
From: Ken Norton <ken@xxxxxxxxxxx>
Date: Fri, 18 Sep 2009 08:38:52 -0500
>
> Just doing a few back-of-envelope calculations for fun...
> Two Bees at 360Ws = 720Ws
> They recharge in 3s so they draw 720/3=240W - at 12V that's 20A
> Now take some guesses at efficiency of the inverter and the Bees, say 80%
> each and now we're approaching an average 30A.  But they'll charge
> exponentially such that the AVERAGE is 30A, starting with an initial peak
> that will be several times larger (limited by the internal resistance of
> the
> battery, the connecting leads and the inverter circuitry) and decaying
> towards zero.
>


Um.  They would draw 240W at 120vac.
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