That depends on what voltage your batteries are,
You do not need three 12 volt batteries to get 24 volts, all you need is two batteries. So I assume by using three batteries you want to increase the amperage. Wire two of the batteries in series and then wire the third battery to the second battery in parallel and you will have 24 bolts. Or you can just wire two 12 V batteries in series to get 24 V.
Connect three 12 volt batteries in series. You will triple the amperage but the volts will remain at 12. Click the link
No they do not. They have batteries in them, but the batteries are not replaceable. Information from ChaCha.com
Positive wire is red, at least on automobile batteries.
AA batteries are probably used for a current of less than 1 amp so thin wire is fine, 0.5 mm-sqd or #24 wire would be ok.
Gets-together is the verb present tense of the word get-together. But get-togethers is the plural for the noun get-together. Gets-together=action for getting-together Get-togethers=an informal social gathering
Take 3 twelve volt batteries Run the + of battery #1 to the - of battery #2. Run the + of battery #2 to the - of battery #3. Use the + of battery #3 for your positive feed, and the - of battery #1 for your ground.
i think wire, but I'm not completeley sure.
wire it in series
connect its two terminals with a wire.
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.