Recharging Johnson Control Batteries
I am going to install solar in my Sierra Nevada home. The house is off the grid and currently I use a generator for power. Many years ago a contractor friend of mine gave me six Johnson Control Multi Cell Batteries.They were stored inside. On them is written "580 Amp hr - 8hrs Multi Cell" . I believe they have lead/calcium plates. I do not know if they are 6 volts or 8 volts. The batteries are 12 inches tall and 18 inches long. I have had trouble charging them. I have only been able to get them to hold about 3 volts. If anyone has any suggestions or instruction in how to get them charged, it would be greatly appreciated.
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