# 6V golf cart batteries

dyuhas
Registered Users Posts:

**1**✭
When I combine 2 6V batteries I get 12V. Do I also get twice the amperage of a single battery?

dyuhas
Registered Users Posts: **1** ✭

When I combine 2 6V batteries I get 12V. Do I also get twice the amperage of a single battery?

## Comments

5,806✭✭✭✭✭No, in series (connecting the positive of one to the negative of the other) the amperage remains the same and the voltage increases.

In essence you are just building a bigger battery, a 6 volt battery is really 3 - 2 volt cells hooked up in series, your just making a battery with 6 cells.

- Assorted other systems, pieces and to many panels in the closet to not do more projects.

3,609✭✭✭✭32,608adminYou double the voltage = 2x the power

You double the current = 2x the power

You take two batteries in series, you get:

P = 2*Voltage * Current

You take same two batteries in parallel, you get:

P = Voltage * 2*Current

Same amount of power (or energy if you use Amp*Hours instead of Amps for the current).

-Bill

111✭✭"No": Two 6V golf cart batteries, each, say with 220 Amp Hours, wired in Series, will give you 220 Amp Hours (at 12V).

"Yes" : Two 6V golf cart batteries will give you a hell of a lot more amp hours than a single 12V battery of similar size (as these tend to max out at about 100 Amp Hours).

7✭-Rodger-

1✭245✭✭✭111✭✭Let's see if I can get this right - it's been a while since I had this in school.

- Volts = Potential Energy/Charge = N*m/C = kg*m2/(A*s3)
- Amps = Charge / Time = 1C/s
- Watts = J/S = N*m/S = (kg*m2)/s3

So, in the example above:"voltage times watts" = (kg*m2)/(A*s3) * (kg*m2)/s3 = (kg2*m4)/(a*s6) : not what we want.

Instead if you look at power (watts), does it equal VA?

Watts = (kg*m2)/s3 = VA ?

Let's look at VA

VA = V * A = (kg*m2)/(A*s3) * (C/s)

= kg*m2*C/(A*s3)

Substituting in that we know 1A = 1C/s we get

= kg*m2*(A/S)/(A*s3)

And the A's and one of the S's cancel out, leaving us with

VA = (kg*m2)/s3

e.g, the definition of Power in Watts.

7✭opps, you are right in any case, by doubling the voltage you can double the watts and still have the same amps

-Rodger-