Article 63289 of alt.solar.photovoltaic:
Path: news.misty.com!not-for-mail
From: nicksanspam@ece.villanova.edu
Newsgroups: alt.solar.photovoltaic
Subject: Re: Solar Panel for Car
Date: 5 Oct 2008 13:36:21 -0400
Organization: Villanova University
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Slick <slick@t3direct.com> wrote:

>... the rate of charge recommended for Gel / AGM batteries is 10% of
>the battery's AH capacity .

That sounds more like a max than a min.

>Being a late model car you could expect that your battery will be at least 
>80AH , so you need 8 amps to charge it.

If a battery takes 3 weeks to self-discharge, we might keep it charged
with 80AH/(3x168H) = 160 mA, ie 1.9 watts, on a continuous basis.

Nick