Which dial should I use to test an old car battery? I think it would be DC and car batteries put 12V and 30Amps, should it be "DCV 20"?
1479468
You can test the voltage with DCV 20, but that only tell you voltage.To test the a battery you fully charge it. The you test it with a battery draw tester to see if the battery is any good .that's a different tester.
1479469
This is not meant to be used to test a car battery. You'll blow yourself up.
323793
I feel that the tester is quite accurate. If it is failing the battery, the battery is definitely junk. Sometimes it will pass a battery and the battery will start the car fine and is able to put out good cranking amps for a short time but then the battery may not have very good reserve capacity such as if the customer leaves their key on for a half hour the battery may die quicker than it should. But the age on the battery is a pretty good indicator for this sort of battery deterioration. It's a simple tester that works better than 2 others I have tried.
451459
Use volt meter to measure voltage . Should be 12 volts or better. Put a load such as turning over the engine. If it falls to 9 volts its a bad battery
1465929
In this case, it is the input voltage to the device. I use this in an airplane that uses a 24 volt battery.i f I would try to use the 12 volt input , I would burn it up. If you are going to use it in a car then most cars are 12 volts so you want one where the input is 12 volts.
608287
It measures to .01amps. I use it for that very reason and suceesfully found a short on a 12v gmc van.
508361
Do the folowing:1. Reseat your battery. (Make sure it locks into place. 2. Make sure your battery has a charge with a voltmeter. (Any auto parts or engine repair shop would able to do this if you don't have one.) Should read 24-26 Volts DC if charged but will still read the same until almost completely dead so if possible put a load on it when checking. 3. Make sure your charger is working.4. I'ts a simple 24 Volt electric motor so if the battery is good and is charged, it's either a connection that has come loose or the switch on the handle is bad. Take it in for warranty repair. Do the folowing:1. Reseat your battery. (Make sure it locks into place. 2. Make sure your battery has a charge with a voltmeter. (Any auto parts or engine repair shop would able to do this if you don't have one.) Should read 24-26 Volts DC if charged but will still read the same until almost completely dead so if possible put a load on it when checking. 3. Make sure your charger is working.4. I'ts a simple 24 Volt electric motor so if the battery is good and is charged, it's either a connection that has come loose or the switch on the handle is bad. Take it in for... » Read More Do the folowing:1. Reseat your battery. (Make sure it locks into place. 2. Make sure your battery has a charge with a voltmeter. (Any auto parts or engine repair shop would able to do this if you don't have one.) Should read 24-26 Volts DC if charged but will still read the same until almost completely dead so if possible put a load on it when checking. 3. Make sure your charger is working.4. I'ts a simple 24 Volt electric motor so if the battery is good and is charged, it's either a connection that has come loose or the switch on the handle is bad. Take it in for warranty repair. « Show Less
1462724
Yes- even is says 6 or 12 Volts- it will still check a 8 volt put the Red on the + side and the Black on the _ side and read the volts should read 7 or better --Then hold the load switch and it should read between 12 and 6 volt if is not a bad battery-Some of the old car restorers use 8 volt Batteries in what used to call for 6 Volt to make them turn over faster
1667800
Measure it with a voltmeter. Or use a battery tester. You can get a multimeter (measures volts, amps and ohms) for as little as $15. Then have someone show you how to use it. Its not hard and it's fun. Many other uses such as checking continuity, troubleshooting your car, checking electrical sockets, etc.
2002407
I used a standard car battrery and it ran a radio 2 40 watt lamps for days before needing a charge. Make sure you dont get poitive and negitive mixed up. It killed my inverter dead.
116896
leave them connected unless you feel there is a short, something drawing current, in the system. in older vehicles where there are no clocks or electronics you can remove the negative cable and put a 12 volt, pull fues test lamp with one lead on the negative battery post and the other on the cable , if it lights something is on, pull fuses until the light goes out
1066579
If it's a 12volt I assume. Chances are you would just have to use the old wire mounts from the old battery. Check out YouTube for an idea how. You would need a 30amp breaker connection most likely
1310344
A car battery is 12v. It's saying you need a car with a battery. Pretty simple
2067999
Greetings Josh. You will need some battery cables to hook this up to a car battery. Include a fuse (150 amp) and battery disconnect switch. A continuous 120 volt 10 amp draw is probably more than this can handle. Also, a car battery will go flat in short order with that much current draw. 10 amps at 120 volts = 100 amps at 12 volts. Recommend you go with a larger unit that can handle 1600-2000 watts, and a larger battery bank, unless you will be keeping the engine running. Hope that helps.
456386
Check polarity with a small DC voltmeter or multimeter. When the + (usually red) lead is connected to the positive side of the battery, the meter will register a voltage reading. If the leads are reversed, the needle will try to deflect backward.
566518
Depends on what type of battery you have, Susan. Here is a direct quote from my owner's manual: "This system is designed to be used ONLY on vehicles with 12 volt DC battery system. Do NOT connect to a 6 volt or 24 volt battery system." The caps are mine to stress that this unit is only for 12 V systems. So far mine has worked flawlessly and I hope you have a 12 V battery so you can enjoy the same performance that I am. Good luck! Chuck
1488699
To accurately test a battery, you need to provide an artificial "load" that approximates what that battery might typically be expected to do. A car battery has a LOT of capacity and it is beyond the capabilities of a small/simple tester like this to provide a sufficient load to test its capacity. So... if THIS tester says your car battery is dead... it is really dead. But if it says it is OK... it may still not be.
623827
It depends on the condition of the battery. An OLD battery could read 12 volts, but the voltage may drop way down when trying to start. A good battery might start a car with only 10 volts