Should I test pos. on 1 battery & - on 2 battery? What reading should I get?
2006-07-16 11:38:06 · 4 answers · asked by Allan S 1 in Science & Mathematics ➔ Other - Science
Yes, measure between the two wires going to the motor; that will be + from one battery and - from the other. Under no load, a fully charged 12v lead-acid battery should measure about 12.6v after being disconnected from the charger for several minutes. So you should see about 25.2v on the motor connections when it's not running. Of course this decreases as the battery discharges.
Connecting the batteries in parallel is a good idea if you don't expect to need full power output and don't have one of the more modern motors that adjust speed using a pulse width modulation (PWM) circuit. (See the reference.) Older motors use a series resistor for less than full power and waste energy as resistor heat. PWM simply uses short full-power pulses when lower power is called for and doesn't waste nearly as much energy. You should stick with the 24v setup if yours is a PWM design.
2006-07-23 10:33:51 · answer #1 · answered by kirchwey 7 · 0⤊ 0⤋
Yes, you can check voltage as you describe -- one test lead on negative of one battery and other lead on positive of other battery.
You might want to consider connecting your batteries in parallel instead. That way you'd get more current for the same voltage.
2006-07-16 20:53:27 · answer #2 · answered by Chug-a-Lug 7 · 0⤊ 0⤋
do you have them wired series or parallel you should have them in series to each other use the neg from 1 and the pos from the other using a multimeter it probably won't show ab full 24 volts
2006-07-16 18:48:11 · answer #3 · answered by johnnymavrick1 1 · 0⤊ 0⤋
put your tongue on the plus terminal, if your right eye lights up its 12v, if both eyes light up, your dead.
2006-07-16 20:30:09 · answer #4 · answered by Corsham B 2 · 0⤊ 0⤋