Using a power supply to give out 13.8V (just for a continuous float charge), can you hook up SLA batteries in parallel so you can keep them charging that way?
What I basically want is a high-capacity UPS. One way for getting the high capacity, I thought, was to hook up the batteries in parralel, thereby increasing the amp-hours total of the battery.
Can this be done?
The scheme, basically, is this:
Power Supply -> Battery -> Inverter -> [appliances]
[link]http://www.dansdata.com/diyups.htm[/link]
If you disregard the computer, this is what it looks like:
The question is, can you hook up 2 (or more) SLA in parallel... Would there be an imbalance in the charging (like... what if one battery was already charged -- although not topped off since it is on a float charge -- ...if one battery was already charged, is there a danger in overcharging it since the other one is still not charged?)
Er... is this quesion confusingly worded?