You will need a second battery in series with the first battery to produce the 24 volts DC. To keep it charged the series connection will have to be manually changed to a parallel connection.
No, 12 volt batteries are 12 volts.
Modern automobile batteries are 12 volts.
they are 12 volts
You must hook them up in series. You will need four 12 volt batteries to do this.
When 20 12-volt batteries are hooked up in series, the result is 240 volts, measured from the farthest ends. When 20 12-volt batteries are hooked up in parallel, the result is 12 volts (while current increases).
Depends on the battery size. If your boat is a 12 volt system and you wire two 12 volt batteries in series you then have 24 volts. If the batteries are 6 volt batteries you will be fine. If you have a 12 volt system on your boat and want to use two batteries then wire two 12 volt batteries in parallel. You will still have 12 volts but will have double the amperage available and this will extend the running time of the batteries.
NO!
Two 24 volt batteries in parallel will give you 24 volts. The only other way is two 12 volt batteries in series.
Paralleling four sets of 6 volt batteries will still give you 6 volts. Two 6 volt batteries in series will give you 12 volts. Parallel these series sets will give you longer endurance at 12 volts. There is no way you will ever get 48 volts out of four 6 volt batteries.
You will have a 12 Volt source with double the charge capacity.
That is Impossible. You can however make two 6 volt batteries into a 12 volt system by wiring the two 6 volts batteries in Series. You will then have an output voltage of 12 volts but the amperes will only be what one of the batteries have, In other words the volts will double but the amps will stay the same as if you only had 1 battery connected.
Yes, series the two batteries to produce 12 volts. Tap off of the two end terminals for the 12 volts. Tap off of the series jumper for the 6 volts of one of the batteries. The two 6 volt batteries can not be paralleled in this connection as they will short out.