Use gel cells and use a smart charger to keep the batteries topped off without
overcharging. Check out A&A Engineering for a good smart charger at:
http://www.a-aengineering.com
Click on "Smart Battery Chargers"
They have a 1 amp and 5 amp unit that will that will treat your batteries
right..
Rick

sam woolf wrote:

> I need to get some rechargeable batteries for powering an art exhibit. The
> batteries are powering six constantly on sensor units which each draw 16 mA,
> and which occasionally cause small relays to be triggered. The exhibit needs
> to be able to operate without power problems for 8 to 10 hours, and can be
> recharged at night. Not sure whether nicad or lead acid batteries or
> some-other are the most suitable. Would appreciate an outside opinion.. Am
> slightly worried about high current possible with lead acid batteries could
> somehow fry my electronics, but am also worried that nicad batteries won't
> last long enough, or that they will suffer from 'memory effect' and leave
> the exhibit conked out in the middle of the day.
> Any thoughts?
>
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