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You conect them in parelell. Positive to positive, negative to negative, with either a 12 or 6 volt system. if you conect them in series you will double the voltage.

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Q: When a car has two batteries how do you connect the second one?
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How do you connect two batteries in one car?

If the car is a 12 volt system, then you will want to connect the batteries in "parallel". IE: negative to negative and positive to positive. Because of "cranking amps" it would be advisable to use a cutoff switch when starting the car. (The switch would interrupt the power from one of the batteries so the amperage wouldn't toast the starter) Also, the alternator should be isolated as to charge the batteries one at a time.


How do you connect diodes in series?

Connect positive to negative, leaving the end positive and negative connections free to power circuits or devices. Connecting batteries in series adds the voltage of the batteries. For instance, connecting three 12v car batteries in series will create a total of 36v, enough for welding.


How do you wire 3 12 volt batteries to get 24 volts how to connect the wire?

Wire two of the 12 volt batteries in series and the third battery in parallel with the other two. As the two batteries wired in series will give you 24 volts but the amps of only one of the batteries, unless you need the extra amperage of that third battery I would just go with two batteries wired in series. But if you want to use three batteries then connect the positive from one battery to the negative of the other battery. This will give you 24 volts. Now just connect the negative of the third battery to the negative of the first battery connected in series with the second battery. Now connect the positive to the second battery to the positive of the third battery. You will now still have 24 volts but twice the amperage of one of the batteries.


How do you connect a 24 volt charger to two 12 volt batteries?

You connect the batteries in series Red charger lead to one red battery terminal, then the black battery terminal of that battery to the red battery terminal of the second battery. Then black battery terminal of the second battery to the black lead of the charger.


How do I connect a twelve volt car battery to two six volt batteries connected in a series?

connect the 2 six-volt batteries together one terminal each positive to negitive, this will make a 12-volt combination, then you can connect the jumper cables, one side to the 12-volt battery and one side to the two 6-volt terminals, + & -


To increase voltage output when using more then one battery connect the batteries in?

To increase voltage output when using more then one battery connect the batteries in series.


To increase amperage output using more than one batteries connect the batteries?

Parallel


What would cause a car battery to explode?

If you incorrectly connect two car batteries together, i. e. by crossing the cables (negative to positive, positive to negative), one or both of the car batteries will soon explode. The resulting acid splash will cause severe burns to the nearby onlookers.


How do jumper cables work?

Quite simply. They just connect between the two car batteries (always + to + and - to -) and allow one car's electrical components to draw electricity from the other's battery.


You have 2-6volt golf cart batteries wired in series for an RV How are you to wire 2 other batteries in series with them making 4 batteries to an RV?

I'm a bit confused here... but I think you are asking:I have two batteries in series in my RV ==> making one 12 V batteryHow do I connect the other two to them to make this battery stronger?What you need to do is connect the second set of batteries in series with each other, then connect the two pairs in parallel.I tried to draw what I mean with text but it didn't work... so..... "parallel" means connecting the positive end of the first chain to the positive end of the second chain, and the same with the negative. These ends are what you also connect into the RV.


How do you make a circuit with 3 bulbs 2 switches and and 2 batteries where the 1st switch controls the lighting of all the bulbs and the 2nd switch controls the lighting of the second bulb?

Connect the two batteries for the voltage needed. If they are 12 volt batteries and the lights are 12 volts, connect the batteries in parallel (negative to negative and positive to positive). If they are 12 volt batteries and the lights are 24 volts, connect the batteries in series (negative of one battery to positive of the other). Run a wire from batteries to first switch, then to two of the lights and the other switch (in parallel). From the second switch run a wire to the third light, then connect all three lights back to the battery.


How to connect 4 - 6V batteries for -12V system?

In order to connect 4-6 volt batteries and end up with 12volts you will need to understand parallel and series connections. to connect two batteries in parallel you would connect the positive side of one battery to the positive side of the other battery; and the negative side of one battery to the negative of the other battery. doing this will not change the voltage. to connect in series you connect the positive of one battery to the negative of the other battery. doing this will increase the voltage;in this example you will end up with 12v. 6+6=12. when you stack batteries in a 2-cell flashlight that is connecting the batteries in series. The answer to the question is: connect two batteries in series; then connect the other two batteries in series. after this is done connect the two pairs of batteries in parallel. If you think of it visually you would have two batteries wide and two batteries tall.