solar panel output voltage
DC electric wiring battery solar voltage help?
If I have (6) 12 volt batteries wired in series for a total of 72volts. I am thinking about buying a solar charger that is 18 – 24 volts. Do I have to have 3 of these solar panels wired in series to charge the batteries? What will happen if I purchase one charger and put the put the pos+ on the first battery and the neg – on the 6th battery? Will it charge, just slower? Do I have to match the charger output to the battery voltage. I do want to have to unhook the batteries that are in series because I am lazy. Thank you in advance for your help. I hope I explained it well enough.
Sorry for the typo, I don’t want to have to disconnect the 6 batteries that are wired in series.
The batteries are in a golf cart. Can I just trickle charge them with 18-24 volts. Doesn’t a regular charger trickle charge batteries at a lower voltage?
When a panel says 18 volts out, that’s the most you’ll get out of it. So if you connect it to 72 volts, either no current will flow, or worse, current will flow the wrong way.
I suspect the panel you have in mind is very low power. Six golfcart batteries is equivalent to what someone might have in a cabin, and charge with a 600W (minimum) array. A smaller array would not generate enough current to get the batteries to absorb charge.
If all you want to do is maintain the batteries with a trickle charge, best to just run an extension cord to a trickle charger.
Digital voltage / Current meter – Solar panel monitor PIC16F872
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