I know another solar panel charging batteries question!
Ok so I have a solar cell that puts out about 9v and 90ma with no load.
I connect it to 3 AA NiMH cells and it drops to about 4.6v and 60 somethingish ma.
I was surprised the voltage dropped that much- is that normal?
If I had a 9v and 330ma solar panel would that make less of a voltage drop since it technically has more power?
Also the 3 batteries have a combined voltage today of 3.96 volts. Connected to the solar cell going through a blocking diode it reads about 4.6v, but removing the diode and connecting directly to the solar cell the voltage just read the 3.96 volts. Is that because the batteries have more power than the solar cell?
BTW I'm only trying to trickle charge the batteries at .03C or less - they will have a rest at night and when the sun isn't bright enough. I know the setup I have can be made to work with the 3 cells, but I will probably be charging 4 cells.
I've got some more questions about a 6v regulator for 4 batteries but don't want to throw out to many questions at once!
Ok so I have a solar cell that puts out about 9v and 90ma with no load.
I connect it to 3 AA NiMH cells and it drops to about 4.6v and 60 somethingish ma.
I was surprised the voltage dropped that much- is that normal?
If I had a 9v and 330ma solar panel would that make less of a voltage drop since it technically has more power?
Also the 3 batteries have a combined voltage today of 3.96 volts. Connected to the solar cell going through a blocking diode it reads about 4.6v, but removing the diode and connecting directly to the solar cell the voltage just read the 3.96 volts. Is that because the batteries have more power than the solar cell?
BTW I'm only trying to trickle charge the batteries at .03C or less - they will have a rest at night and when the sun isn't bright enough. I know the setup I have can be made to work with the 3 cells, but I will probably be charging 4 cells.
I've got some more questions about a 6v regulator for 4 batteries but don't want to throw out to many questions at once!