Any battery experts here? Help me understand this senario:
Two separate, working 12 volt lead-acid batteries:
#1) Smaller, 60AH capacity, rest voltage = 12.5V (about 70% charged)
#2) Larger, 120AH capacity, rest voltage = 12.5V (about 70% charged)
Now connect the two of them together in parallel. Leave them connected for an hour or so. Disconnect, and let the batteries rest for 30 mins. Measure voltage.
I would expect the same voltage, 12.5, for both batteries. In other words, there was no current flow in either direction while the batteries were connected, because the voltage were the same. The batteries' capacities did not matter when connected like this.
Am I wrong?
Thanks,
Sam
Two separate, working 12 volt lead-acid batteries:
#1) Smaller, 60AH capacity, rest voltage = 12.5V (about 70% charged)
#2) Larger, 120AH capacity, rest voltage = 12.5V (about 70% charged)
Now connect the two of them together in parallel. Leave them connected for an hour or so. Disconnect, and let the batteries rest for 30 mins. Measure voltage.
I would expect the same voltage, 12.5, for both batteries. In other words, there was no current flow in either direction while the batteries were connected, because the voltage were the same. The batteries' capacities did not matter when connected like this.
Am I wrong?
Thanks,
Sam