The voltage is written on the fuse.
No
No
No
5.9 12v seems to need less maitenance!!
If you want to convert 24v AC into 12v Ac, it's simple. Just get a transformer to convert 24 volts into 12 volts. This is called a stepdown transformer. If you want to convert 24v DC into 12v DC, it's more complicated. First you have to change the 24v DC into 24v AC by a switching converter that changes DC into AC. Then you would use a stepdown transformer as in the former example. Once the 24v AC is converted to 12v AC, then you use a rectifier bridge to change the 12v AC into 12v DC.
You don't. 2 12v panels together don't make 24v - doesn't work that way. If you need 24v you need to get 24v panels.
y not?
Barely, 24v or36v in series is better
You need a 24v to 12v converter. Truck stops either keep them in stock or can get you one.
No, you need a 24 volt charger.
Wire the batteries in "series". Place jumper from neg (-) terminal to the pos (+) terminal on the other battery. You will have 24V across the remaining terminals.
To locate and replace the 12V fuse in a Volvo XC70, first, consult the owner's manual for the specific fuse box location, typically found under the dashboard or in the engine compartment. Once you locate the fuse box, identify the fuse related to the 12V system, which is usually labeled. Use a fuse puller or a pair of pliers to remove the blown fuse and replace it with a new one of the same amperage. Always ensure the vehicle is turned off before performing this task for safety.