hi all
I have a 4v 30ma solar panel that Im connecting to 2 x 1.2v 600 ma ni-cd batteries with a small diode , the batteries are in series. what is happening is the "first" battery (one connected to the positive of solar cell) is being charged but the 2nd battery in the series is not.
Ive measured the voltage accross the first battery and its 1.5v , then measured the voltage acros the 2nd battery and its 0.6v.
from what I understand the 1st battery acts like a resistor and sucks up all the voltage only letting a little voltage go through to the second battery.
I cannot charge them in parallel cause when my circuit switches on it needs the 2 batteries in series to give me +- 2.4v.
what should i do , any suggestions ???
thanks
I have a 4v 30ma solar panel that Im connecting to 2 x 1.2v 600 ma ni-cd batteries with a small diode , the batteries are in series. what is happening is the "first" battery (one connected to the positive of solar cell) is being charged but the 2nd battery in the series is not.
Ive measured the voltage accross the first battery and its 1.5v , then measured the voltage acros the 2nd battery and its 0.6v.
from what I understand the 1st battery acts like a resistor and sucks up all the voltage only letting a little voltage go through to the second battery.
I cannot charge them in parallel cause when my circuit switches on it needs the 2 batteries in series to give me +- 2.4v.
what should i do , any suggestions ???
thanks