First connect the battery charger positive connection to the Positive post on the battery and the negative connection to any place on the engine away from the battery and not on the negative battery post. Connecting the battery charger any other way is unsafe.
Connect them together in Series. Connect the negative post of one battery to the positive post of the other battery. Then connect the negative charger cable to one negative battery post and the positive to the positive post of the other battery.
You should connect the negative cable to the negative. Your question sort of stopped. Connect to a negative what?
Sure you can and you will end up with 36 volts. Connect them in Parallel and you will have 12 volts.
You connect the positive post first and then the negative. I have been in the automotive industry for 5 years now and that is always how it is done. Reason being if you connect them the opposite way it can create a spark which is very dangerous due to the hydrogen gas produced by batterys. I recommend wearing safety glasses and wearing protective gloves.
Connect positive first and negative last.Connect positive first and negative last.
The man said it Always connect the positive + cable first to the battery. Then connect the negative- cable to the engine somewhere. Never connect the negative cable to the battery itself. Batteries vent hydrogen gas and which can ignite with the slightest spark. For this reason never, ever, connect the negative first and never connect the negative to the battery.
Connect the positive + red charger cable to the positive + red battery post. Then connect the negative - black charger cable to the engine somewhere. Most engines have something metal sticking up that you can connect to. Do not connect the negative charge cable to the negative battery post, always connect it to the engine.
connect the positive first, the negative. the negative cable doesnt spark as much
Connect the negative cable first.
Yes, the amps stay the same but the voltage doubles. If you connect in parallel the volts stay the same and the amps double.
There is positive and negative. The positive energy can't connect to a another positive there's a force between them that's doesn't let them connect. Same with negative energy it has to connect to positive not negative.
You don't, you connect to the battery from the battery of another car. Use the positive cable to connect the two positive electrodes and the negative to connect the two negative electrodes.