Date: Wed, 7 May 2008 19:00:37 -0700
Reply-To: obeechi@RUNBOX.COM
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Mark C <obeechi@RUNBOX.COM>
Subject: Re: Charge Controller
In-Reply-To: <48224981.1060800@gmail.com>
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Sales guy said he felt it was MPPT, but I guess he's had people telling him they didn't think it was 'true' MPPT... like there was some dispute about it in some circles. So maybe its a modified MPPT.. I don't know... nice to hear that you have a Bluesky product and that you seem to like it. Have you ever posted pics of where you're charge controller is located?
From: Mike Elliott <camping.elliott@gmail.com>
To: obeechi@RUNBOX.COM
Subject: Re: Charge Controller
> Interesting that the SB2000E may not be MPPT. I've looked carefully at my
> unit's input & output volts and amps and it certainly puts out more amps
> than it takes in, performing the "impedance matching" that MPPTs are
> intended to do. PV solar panel power is at maximum at higher voltage
> (about 17.5VDC) than batteries want to be charged at (about 14.7VDC max,
> dependent on battery temperature, the 2000E has an optional thermal sensor
> to bolt to one of the battery terminals). The load presented to the panel
> (the input side of the controller) is tweaked every 10 seconds to keep the
> panel operating at its peak power, and that power is transformed to a
> lower voltage and since power = volts times amps, the controller puts out
> more amps than it gets in to charge the battery. So if the 2000E is not a
> true MPPT, it certainly performs pretty much like one; close enough to do
> the job for us.
> --
> Mike "Rocket J Squirrel" Elliott
> 71 Type 2: the Wonderbus
> 84 Westfalia: Mellow Yellow ("The Electrical Banana")
> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
> KG6RCR
>
>
>
> On 5/7/2008 1:14 PM Mark C wrote:
>
> > I went with the Bluesky iX Charge Controller (Solar Boost 2512iX). Its MPPT without question, with 3 stage battery charging, and has an auxillary output, as well as allows for a remote. Sales guy said some people think the Bluesky SB2000E may not be true MPPT, and the iX is a better build quality. Its more than I need amp-wise, which at least is better than less.
> >
> > Now if someone could let me know of a good lead on vents to sneak under the solar panel.
> >
>
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