40 amp battery charger + generator = good?

[GrayWhale]

Say when you're using your generator or when there's shore power. And especially when there's no sun out.<br><br>Supposedly at 40 amps, it can charge a dead battery in 2 hours. Would heat it up real bad and shorten it's life as compared to 2 amps (in 8-12 hours), but an average car's stock alternator is at least 65 amps already, so that's even worse.<br><br><br>http://www.harborfreight.com/heavy-duty-612-volt-battery-chargerstarter-69368.html<br><br>

 

[marineprepper]

I use the following 30A charger. <A href="http://www.amazon.com/Schumacher-SC...r=8-7&amp;keywords=schumacher+battery+charger" target=_blank rel=nofollow>http://www.amazon.com/Schumacher-SC...r=8-7&amp;keywords=schumacher+battery+charger</A><BR><BR>I dont have any heat issues. I have run offgrid&nbsp;for 4 days before. Fired up the genny every 3-4 hours and toped off the 3 batteries in a half hour or so. Now I have some solar juice keeping them full and the genny is only for back up or high demand.

 

[GrayWhale]

I was looking at that Schumacher also. It looks good. Have you ever recharged a near dead battery with it at 30 amps before? And how long did it take?<br><br>

 

[marineprepper]

Its been a while, If my memory serves me correctly it was about 3 hours. I try to never let that happen though. Bad for their health ya know.

 

[bee]

I know this is an older post, but you should really read the battery faq page located as a sticky in this section, your info is not particularly accurate.

 

[Offshorenaples]

The battery will only absorb what it wants and not what you feed it.