No it is not possible to charge a 12 volt battery with a 24 volt solar panel.
Do 24 volt solar panels charge better than 12 volt.
Consider a 12v 60 ampere hour battery.
This is called wiring your solar modules in series.
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In each group of two panels connect the negative of one panel to the positive of the other.
You can get much bigger inverters on 24v or 48v than 12v.
Then the unused positive from one module and the unused negative will be 24 volt.
It is clear from this that a 24v system is always better than a 12v system provided you can physically fit two batteries.
This is so because increasing the voltage of a system causes a reduction in the current through it and in turn reduces the size of the wires you need.
You can get much bigger inverters on 24v or 48v than 12v.
Thus a 12 volt battery should be charged with a 12 volt solar panel only.
This will result in a dangerous overcharging situation thus resulting in explosion and permanant damage to the battery.
There are a number advantages in opting for a higher dc supply voltage.
Yes you can charge a 24 volt battery bank with 12 volt panels.
Just pair the solar panels in groups of two.
Most string inverters have an operational voltage window between 300 and 500 volts.
The amount of energy in the batteries is amps x hours x volts.
This would mean that when designing a system you could have between 8 and 12 panels in a series.
The thing is most solar panel systems are larger than 12 panels.
There are a number advantages in opting for a higher dc supply voltage.
Very good question if your looking at off grid that would be charging a battery bank and using a inverter to go from ac to dc for your home you can use any volts for charging a battery bank like.
Using a 24 volt supply instead of a 12 volt supply greatly reduces the wiring cost to almost half the original cost.