Um I'm supposing a car battery is about 40-50 amp hours. So if its low it should be okay to leave it on a 2amp charge overnight? I think the charger has 2a, 10a and boost setings -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://artengine.ca/pipermail/lab/attachments/20120115/97d2aec4/attachment.htm>