Re: Another Novice Q. - recharging - Volts and Amps


"Kris Krieger" <me@xxxxxxxxxx> wrote in message
news:HN6dnUa5Bpt2esLVnZ2dnUVZ_h3inZ2d@xxxxxxxxxxxxxxxx
Apologies in advance if this is a dopey question, but, when it comes to
recharging batteries, and using a solar cell to do that, what I've been
assuming, based on th info that peopl ehere have kindly provided, and also
that I've foind on-line, is that teh mA output of the solar cells should
not exceed 2/10ths to maybe 3/10ths of the battery's mA rating, and teh
voltage produced by the solar cells should be as close as possible to the
total voltage of the battery or batteries. But I wanted to check whether
that assumption is correct, becasue I think I'm getting closeto getting
some parts and trying a couple of assemblies.

Thanks In Advance!

- Kris

There are a few suppliers that sell solar scavenger panels for charging
vehicle batteries while parked outside the workplace, there are certainly
car ones that sit on the dashboard and possibly permanent one's that can be
bonded onto the roof, I believe there are also motorcycle types available.

If you make a home brew panel, don't forget you need a blocking rectifier to
stop the battery discharging into the solar cell when there's no sunlight
and the forward volt drop of the rectifier has to be taken into account when
specifying the solar panel voltage.


.

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