You get 3 of them and hook them up in series. Then you can connect them to the 36 V battery.
wire it in series
The batteries need to be wired in a series configuration. Wire the negative of the first battery to the positive of the second battery, and the negative of the second to the positive to the third. If the batteries were placed in a straight line they will look like train cars, with all positive ends of the batteries pointing in the same direction. The batteries voltages are now added together for three 12 volt batteries making 36 volts.
Four 12V batteries may not be connected end to end to obtain 36 Volts. But four 12V batteries can be connected end to end to provide 48V and push 36 amps. The actual answer to your question suggests that you drop one 12V battery and use three, not four 12V batteries end to end to obtain 36V.
A cart that has batteries connected in series with one plus and one minus cables may have three 12V batteries connected with two jumpers, instead of twice as many 6V batteries with five jumpers.
can ou step down 36 volts dc to 12 volt dc using batteries
Connect three 12 volt batteries in series and you will have 36 volts but will only have the amperage of one of the batteries.
If your golf cart is 36 volts it is probably three 12 volt batteries in series. To pick off 12 volts from the carts power source using one of the 12 volt batteries. Make sure the polarity is correct to the phone charger. If the charging unit is like the ones used in vehicles the center pin is the positive point.
Depends on the amperage of the batteries you are using. Both setups will give you 36 volts, but you will normally have a longer run time with six 6 volt batteries in series than three 12 volt batteries. That is why golf carts use 6 volt instead of 12 volt batteries.
The first choice was the best: 3 x 12 v 12 Ah will give a 36 v 12 Ah battery. In series the same current goes through all the batteries so the Ah capacity does not change.
It would take 3 batteries of 12 volts each to get 36 volts. You would connect the negative pole to the positive pole. Then you would have 36 volts. Make sure you connect positive to positive and negative to negative on your golf cart. Otherwise, you can ruin everything.
The batteries should be wired in series. Electrically, it looks like this: Positive lead to car (+ -) ----- (+ -) -----(+ -) Negative lead to car Each set of parentheses represents a battery, the dotted lines are wires connecting the middle battery to the battery on each side. This will give you 36 volts at the positive and negative leads going to the car. The other option is wiring in parallel, which gives you 12V, but triples the load capacity.
It depends on the ratings of the batteries and how they are connected.