what will the meter show on a dead battery
1514841
I don't know, my charger crapped out, these things are disposable, if you're lucky you'll get a year out of them
1158488
Can not be certain but would guess you have a battery with calcified plates causing a short. Bottom line a dead battery.
1448608
Yes, but you should call your security system company and verify, they can tell you if they need to reset the system and they can also tell you if the system shows a full battery.
1232900
In my opinion, this tester is suitable for detecting good from dead batteries, and that's how I use it. For anything that is not full but has some life left in it, I would treat it as dead and in need of charge.
1533357
it has a battery that runs the meter. it could possibly be dead after that date. i doubt it tho, most dates are very conservative in the manufacturers favor.
1497077
I have one and the light meter worked for about a month after i got it. The light mustve died or something im not sure but i know its not the batteries.
1237917
You would have to determine if the problem is the battery or the charge controller / panel. I would hook up another battery that is some what discharged and check the charge current and voltage coming from the charge controller and panel.
688847
The ammeter needle goes down as the battery gets charged. So when the meter needle shows between 1 and 0, you can assume it fully charged. I usually stop charging when the needle is close to 1.
312753
You can check the voltage. If you check it right after it's been running and then again after it's been sitting for some time it could show you a drop in the stored voltage, however this could indicate a constant drain on the battery unless you disconnect the negative terminal when doing the test. If you are trying to determine if the battery is weak, then you really need a load tester.
1491401
Sorry about that my meter dose not do wattage but it doss keep my battery's alive
1958850
Only if the fuse is is burnt (The device will not work otherwise) this can be usually seen by a visual check of the actual fuse. otherwise an Ohm meter will have to be used across each lead to check for continuity. If you are replacing the detector my advise is to use all new from the box
603197
Yes, that will work. The meter reading will indicate the value of the power source voltage. Instant battery voltmeter if that's what you want.
1651789
I will try my best to help you with your question. First the batteries need to be fully charged overnight. Next they should not be connected to any equipment in any way including ground. Next follow all the instructions for the testing procedure. When doing the test which is a very short time period as indicated in the instructions you will get the reading on the meter and it will change the longer you keep the load switch engaged, it will also get hot in the tester and smell also. This is normal as the tester is putting a 100 amp load on the battery and determines how long the battery can maintain its voltage. This is why you should not hold the load switch longer than the specified time. Use a watch to time the length of time that you keep the load switch pressed and keep an eye on the meter reading. If you have followed all the instructions to the letter and you still get a low reading I would take the new battery to a place like NAPA or Auto Zone and have it tested there. That way you will know if the tester is at fault. It is a pretty simple device and there is not much to go wrong with it. Just be careful handling the meter just after testing and hold it by the handle until it cools down. The other answers you received are spot on correct. " Slightly weak" does not give any of us the whole picture of the test being performed also it is highly unusual to find a new battery that is weak once it has been fully charged and put into service. Good luck. Harold
301591
When you replace the battery then a setup about measure units to be shown appear. You can force this by removing the battery and put it back.
1592257
The unit does not display that info. You could turn your vehicle on and see what it is. Given it only takes 3 hrs for a full charge on my Leaf that info is really superfluous.
1936720
The meter must have its own, separate power supply. I use a 12vdc transformer plugged into my inverter and it works great. I am able to monitor amps used by the inverter and other DC loads connected to my batteries as well as switch to see battery voltage. If you already have a separate power supply, you may have a bad meter.
1496660
I bought the meter to judge the level of lead-acid batteries, but since it is just a voltage meter, I'm not sure it would make any difference.