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Junkymagi said:If you added more batteries in parellel (I think he mentions that in the article) it would increase the up time. 2 batteries last 2 hours, 4 batteries would last almost 4 hours, 6 batteries would last about 5.5 hours. You lose a small fraction each time you add batteries because of the added resistance of the extra wiring and the batteries' internal resistance.
Winga said: I got an e-mail from a friend I haven't heard from for ages saying his son found my article on the net.
debren27 said:One thing I noticed is that, in your diagram of multiple batteries in parallel, you have both leads connecting from the inverter/charger to the same battery. I recently read that in a battery bank the two leads should be connected to opposite ends of the bank; i.e. in your "Parallel battery connection" diagram the negative wire should run from the leftmost battery back to the inverter. Otherwise that right-hand battery gets charged and discharged much more than the others.
Winga said:I've been messing around with off the shelf UPS's lately. Adding larger batteries to them, testing charge times etc. I plan to hook one of them up to solar power to see if I can get stable, reliable, continuous power that's totally independent of the grid.It's in it's infancy but I'm sure that would make for an interesting follow up article :D
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