The two batteries can be wired in series BUT unless they are identical batteries in an identical state of charge they should be checked regularly to see if one of them is fully charged (the voltage has risen to 14.5 volts).
No you cannot.
Two six volt batteries in series makes 12 volts so switch the charger to the 12 volt position.
No, you cannot effectively charge a 24-volt system with a 12-volt charger. A 12-volt charger will not provide sufficient voltage to charge the batteries in a 24-volt system, which typically consists of two 12-volt batteries in series. Attempting to do so can lead to inadequate charging and potential damage to the batteries. It's important to use a charger specifically designed for the voltage of the system you are working with.
You would need a 24 volt charger. Connect them in parallel and you can charge them both with a 12 volt charger. Or disconnect them and charge each one separately.
No, you cannot charge two 12-volt batteries hooked up in series with a 12-volt charger without disconnecting them. Charging them in series requires a charger that provides the total voltage of both batteries, which is 24 volts. Using a 12-volt charger will only charge one battery while potentially over-discharging the other, leading to imbalances and possible damage. It's essential to use the correct voltage charger for series configurations.
If you have two 6 volt batteries you can take a jumper wire and connect the negative post on one battery to the positive post on the other battery then connect the remaining pos and neg posts to the 12 volt battery charger.
Yes, you can use a maintenance charger to charge two 12-volt batteries connected in parallel, as long as the charger is compatible with the total voltage. When batteries are in parallel, they maintain the same voltage while combining their capacities. Ensure that both batteries are of the same type, age, and state of charge for optimal performance and longevity. It's also advisable to monitor the charging process to prevent overcharging.
No, since in series they are 24 volts so you need to charge each one independently with the 12 volt charger. This may be done disconnected or leave them connected and put the charger on the + - of the same battery.
No, but you can charge each one individually without separating them from the series loop.
To charge two 12 volt batteries in series you'd need a 24 volt charger. That's the pat answer. You need to overcome the total voltage of the series batteries (12 V + 12 V = 24 V) to drive electrons "back into" the batteries to restore the charge. It may work better to use a 12 volt charger and just disconnect the link between the batteries and charge them in parallel, but the setup may not support separating the batteries that way. You do have the option of charging them one at a time without disconnecting anything using that 12 volt charger we mentioned. Clip the charger across one battery, charge it up, then repeat with the other battery. The two basic choices are getting an appropriate 24 volt charger or doing a bit of disconnecting and reconnecting so that the batteries can be charged in parallel with a 12 volt charger, which is a much more commonly available and less expensive charger. That's excellent advice from Quirkeyquantummechanic and well said I might add. I'm in Australia and use 2X12 volt batteries to run my 24 volt Motorguide Trolling motor. You can make disconnecting or reconnecting a lot easier when charging your 2x12volt batteries, needed to be run in series to produce 24 volts, by connecting an Anderson plug to suit. Connect the Anderson plug in a handy position into the short lead that goes from the positive post of battery1 - to the negative post of battery 2 - I.E. the lead that enables the batteries to run in series. Then simply add an isolator switch and turn the two batteries off before charging each one singularly with your 12 volt charger. Regards.
Yes you sure can.
Remove any wiring from batteries, connect positive post of one battery to the negative post on the other battery. You now have a 12 volt battery system. Connect your charger to to unused positive and negative posts and they will charge as a 12 volt battery. Need more help contact me through my board and I will try to help