Is this supposed to also test rechargeables? One of the negatives has to do with testing rechargeable &amp; reading was not correct.
562992
No. I tis designed to test off the shelf batteries. I personally have used it to test rechargables. It works on some but not on others. Have no idea why.
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
1528314
If zero is the ambient temperature that should be the reading. Can't say I've tested it and not sure if it would read absolute zero. But when you first plug it in it is at the ambient temperature.
1326685
Need clarification. Are the error codes displayed when connected to the solar panel or lipo batteries after having used on solar panels? Not sure but these are made to check voltages on cells of a battery. The batteries it's designed for are 3.7v on each typically charged to 4.6 or so. If the volage exceeded that it may have damaged the circuitry. Either way they are so cheap I would just get new ones.
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.
1484395
what are you measuring? Are you measuring batteries? If so, then it's pretty normal to have a higher reading except the 3.7V one.
335293
after drying it out, press the battery test button. if you get at least one iight then its probably ok to use
1552921
I also have a battery tester, but I leave the batteries in over night and they are usually fully charged by then. I have not seen the Error indication, maybe the batteries were not set properly in the machine?
1846093
I have been trying to figure out why mine will continue to say .OL any time i try to test any AA or AAA battery. Often times i have to play around with the settings and remove and reinsert the testers on the device. Not sure if it's the batteries, tester cords or the device is not sturdy enough to work properly.
2284299
It depends on the charger as well as the pedaling of this. Best way to test is to plug your phone up normally and base it off of that.
1289944
We generally just use multimeters and/or Hydrometers to check batteries, I don't think this has that capability.It's great for charging though.
1552178
Sorry Calvin, I think this a great meter, however, I only use it to check the voltage on my AA and AAA batteries and rechargeable batteries from Amazon..... Works Great ! Phil Pauls Valley, Oklahoma
1379009
Yes, this would be an excellent use for this tool. Be sure to check a known power source such as a receptacle to ensure the tester is working properly.
543651
That's my experience, but I haven't seen that in the instructions. I've been using rechargeables for 20 years - when ni-cad was the latest tech. I'm disappointed in the large number of cells that fail after only a few recharge cycles.
372892
The battery case (the tab side which is positive) should be up and the negative (smaller) side should be slid on the gold colored bottom of the tester to the (paper clip looking) side. On first contact 100% would be great. It's not unusual to get get lower readings. More than 80% should be fine. Don't test if the hearing aid has a warning feature for low batteries.
792507
This didn't happen for me. It could either be a faulty meter, or it is getting 0.0 volts.
1250771
Sorry, haven't a clue. I've not even tried mine, just wanted something to test batteries before purchasing them unnecessarily.