P
Paul E. Schoen
Guest
"rabiticide" <rabiticide@gmail.com> wrote in message
news:ac850a05-6f1b-4009-93fa-bfb516cbffdd@o4g2000pra.googlegroups.com...
monitor the current in each panel to see if it is balanced. If so, all is
fine. If there is really not enough light to produce the voltage needed to
charge the batteries, then a series connection will help, but there could
be a problem if there is too much sunlight. PVs are pretty much current
limited, however, so I doubt you will cause overcharging or damage.
I'm fairly sure the charger device that connects the PV panel to the
battery is very simple, and perhaps nothing more than a diode to prevent
reverse connection which can damage the cells. You can measure the voltage
drop across the charger to see just how much it drops. If it is more than
0.5 volts it may be a silicon diode, and you might get a little better
performance if you replace it with a Schottky.
Good luck!
Paul
news:ac850a05-6f1b-4009-93fa-bfb516cbffdd@o4g2000pra.googlegroups.com...
You can put a small resistor, maybe 1 ohm, in series with each diode tookay I'm going to try them in parallel with the schottky diodes and if
that does not work ... series connection will be okay? I don't know
what a "buck switcher" is... it's a cheap set-up from Kmart which
charges 3, AA NiMH batteries...
monitor the current in each panel to see if it is balanced. If so, all is
fine. If there is really not enough light to produce the voltage needed to
charge the batteries, then a series connection will help, but there could
be a problem if there is too much sunlight. PVs are pretty much current
limited, however, so I doubt you will cause overcharging or damage.
I'm fairly sure the charger device that connects the PV panel to the
battery is very simple, and perhaps nothing more than a diode to prevent
reverse connection which can damage the cells. You can measure the voltage
drop across the charger to see just how much it drops. If it is more than
0.5 volts it may be a silicon diode, and you might get a little better
performance if you replace it with a Schottky.
Good luck!
Paul