one negative post to one positive post on the other battery. The remaining posts (one on each battery + and - ) would go to the circuit you are trying to power up.
No Yes. hook two in series, two in parallel.
Connect two 6 volt batteries in series. Connect the other two 6 volt batteries in series. Now connect those 2 pairs you have together in parallel. You will end up with 12 volts.
You would need to connect the two 12 volt batteries in series. That will give you 24 volts and the amps of one of the batteries. Voltage doubles and amps stay the same.
Use a series parallel configuration. Two batteries in series to get the 12 volts. Three parallel banks of two batteries to get an increase of amp hours.
NO. Absolutely not, you must hook them in parallel. Two 12 volt batteries hooked in series will give you 24 volts with the same A/H of one of the batteries. Hook them in parallel and you will still have 12 volts and double the A/H of one of the batteries.
Two 6 volt batteries in series, yes. In parallel, no.
Yes, if the two 6 volt batteries were connected together in series.
Two 24 volt batteries in parallel will give you 24 volts. The only other way is two 12 volt batteries in series.
Two six volt batteries in series makes 12 volts so switch the charger to the 12 volt position.
use two 12 volt batteries in series.
By connecting two 6 volt auto batteries in series. Or by connecting eight 1.5 volt batteries in series.
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.