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Generators / Re: Battery bank
« on: April 11, 2012, 09:36:20 PM »Are these batteries good for what I want to do with them?
They all hold a charge of 6.5volts+.They cost me very little not even scrap value do you think it’s best to invest the money to buy the proper charger for these or try and get my hands on the other type of battery.
These batteries came from the back up communications system of a very large pharmaceutical company when they moved and building was demolished. They hadn’t reached their service life.
Casey, I found a fork lift charger... the supply it requires is 240volt 51amp? In the UK?
I would agree with a 48 volt inverter, but pure sine wave is going to cost.
As regards the batteries, a slow charge won't hurt them right until you overcharge. Also AGM are sensitive to high temps.
I really like the Outback inverter/charger, but it runs around 1900 USD for the 48v 3600 watt unit.
If you wanted, you could link all 12 in series/ parallel (2 parallel strings of 6 batteries in series) which would give your 36 volts 200 AH or 7200 wh storage. If you only drew that down 50 % that would give you 3600 wh; you could run a refrigerator for about 12 to 18 hours with that. 3600 wh requires ten amps at 240 volts for two hours, allowing for losses.