0
I'm assuming this is for something like a car battery that goes flat if the vehicle is left unused for a few days.
It's not really a voltage draw you test for, it's a current (amps) draw. Get a multimeter, set it to measure amps, start at the highest setting. Unhook one of the battery terminals, put one of the multimeter probes on the battery terminal and the other on the cable. Check what the meter shows. If needed, switch to a lower, moresensitive setting and repeat the exercise.
All vehicles with something like an alarm, a clock, or even a radio/stereo will pull some amps even in the "off" position. A radio will draw some milliamps to keep its internal memory alive, a mechanical clock can pull in the range of 30-50 millamps.
Add your answer:
Earn +20 pts
How do you troubleshoot a cmos battery?
Test the voltage of the battery. if the voltage is below the rating of a new battery (For a CR203 it would be 3.6 volts) it is defective.
Starter dragging on my ATV and now it want turn over OR SAY A WORD?
Check battery voltage Check battery cables Remove and test starter for drag and amperage draw Repair or replace starter
How can you test the voltage of your car battery?
voltage meter.set to DC voltsBuy a cheap volt meter.
What can drain your monte carlo car battery?
Not charging (bad alt) or it has a draw. Something is drawing power which can be anything that takes electricity or the plates in batt are worn out. test it for voltage, then check alt, if alt light not on, search test vehicle elec for current draw to see procedure.
Why a 1998 dodge neon will run after a jump start but not hold a charge?
First check charging system. If charging is ok, check battery terminals and cables for corrosion. If ok, check for power draw,this is done by disconnecting the ground at battery and placing a test light in line(ground of test light connected to battery ground post and test probe connected to ground cable), close all doors and wait at least two minutes for computers to go to sleep. If you have a draw, test light should burn bright (battery voltage), remove fuses one at a time, until light goes out, this will indicate where the draw is located.
How do you find a shorted wire current draw with the key in the off position if you know which main fuse is involved on a 94 S-10 Blazer?
You need to do a parasitic draw test. Use a voltmeter to check base voltage of battery. Then crank the engine, check voltage at battery. It needs to be at least two more volts than previous base voltage. Then apply a load or turn on headlights. The voltage should not drop over one volt. Ideal base voltage at battery terminals is 12.6, ideal charging voltage would be 14.6, ideal loaded voltage would be 13.6 volts aproximately. If you find a drainage in system and you have a good battery, then you need to check radio and main accessories first, then check door latch switches and courtesy dome lamps. You need to do a parasitic draw test. Use a voltmeter to check base voltage of battery. Then crank the engine, check voltage at battery. It needs to be at least two more volts than previous base voltage. Then apply a load or turn on headlights. The voltage should not drop over one volt. Ideal base voltage at battery terminals is 12.6, ideal charging voltage would be 14.6, ideal loaded voltage would be 13.6 volts aproximately. If you find a drainage in system and you have a good battery, then you need to check radio and main accessories first, then check door latch switches and courtesy dome lamps.
How can you test a battery?
You can test a battery by using multimeter. Set the multimeter to the DC voltmeter setting and then place the leads of the multimeter across the leads of the battery. the multimeter will have a readout of the voltage.
How do you test a car battery?
The battery can be brought to many shops for a free test. Otherwise, you can test the voltage and parasitic drain amperage with proper usage of a multimeter, available at most hardware and electronics stores. To test the battery beyond voltage and parasitic drain, a very expensive piece of machinery is required to test it further. Most shops have such equipment.
How do you test battrey?
If you don't have a battery load tester, you'll have to use a digital multimeter to test for voltage and amperage.
How do you tell if a battery is or is not working?
You check the voltage under load. Even a bad battery may have good voltage if no current is flowing, so you need an appropriate "test" load.
Why is there no electrical power in your 1998 ford f 150?
Often it's a problem with a loose connection or corroded battery terminal, but it can also be just a discharged battery. The question is too vague to answer in any kind of detail, but it would be good to start with the basics; test the battery. Use a volt meter to see what voltage is present at the battery, then start to go out from there. If you have voltage at the battery, test voltage at the connectors, then the relay, then the fuse box.
How do you test that inverter battery is exhausted or need to be replaced?
Use a multimeter to measure the voltage.
