Station Battery Load Testing
Station Battery Load Testing
(OP)
Hello,
It is time for our five year battery test at our powerhouse. It is a 134vdc system. We will be paralleling 12 volt batteries with our 2.2 volt batteries during testing. Other than verifying the polarity, are there other concerns I should look into? Thanks.
It is time for our five year battery test at our powerhouse. It is a 134vdc system. We will be paralleling 12 volt batteries with our 2.2 volt batteries during testing. Other than verifying the polarity, are there other concerns I should look into? Thanks.





RE: Station Battery Load Testing
# 2 match voltage leveles when parrelleling batteries.
RE: Station Battery Load Testing
RE: Station Battery Load Testing
I'm pretty sure he meant he wants to parallel (11) 12v batteries with 60 2.2v batteries. Meaning each battery bank would have ~132v.
RE: Station Battery Load Testing
RE: Station Battery Load Testing
RE: Station Battery Load Testing
RE: Station Battery Load Testing
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If we learn from our mistakes I'm getting a great education!
RE: Station Battery Load Testing
Lead-acid cells are typically around 2.2 volts. The common "12-volt" battery has six cells and if charged will show a bit over 13 volts. Look for 13.4 volts. You will note that this is a tenth of the voltage of your "134-volt" bank.
The 125 VDC (nominal)bank that is typical in most US installations has 60 cells, requiring ten "12-volt" batteries to replicate it. On my installations, that "125-volt" bank typically runs around 134 volts. But it's still called a "125-volt" bank. And it has 60 cells.
If you're trying to parallel 12-volt batteries, you need ten, and they should be fully charged. Using proper safety equipment, connect one end of the temporary bank, and then use a voltmeter to check the voltage difference at the other end before connecting it.
old field guy