Originally Posted by MLXXXp
In an earlier post you said "I already have a
The solar charging system that I'm working on will use from 1 to 4 of those 1.8W panels but also includes a 12V gel battery along with charge control and low voltage cutout circuits that I've designed.
i simply opened up the libre and connected a 9 volt solar panel to the INTERNAL BATTERY DIRECTLY with a diode in series to prevent the internal battery discharging into the solar cell or causing short circuits.
result i got on a DULL day was 15 minutes of aluratec libre pro operation after 6 hours on a window ledge inside the house.i had totally discharged the battery beforehand.
the panal can output 200 milliamps short circuit current on a bright direct sunlight day.
the current flow varied between 10 to 20 milliamps on a dull day into the libra battery.
no doubt you can on better days you could get up to a 1/2 hour operation or longer.
this was a 0.7 watt panel.