Is it work as a tester to verify if a batterry is charged or not and is it possible to charge batteries not complete discharged?
463306
If the battery already has a full charge the tester will show it in a short while. Yes, it will sharge partially discharged batteries.
463307
No its not a tester. Yes you can charge batteries not fully discharged. Also, it will tell you if a battery is bad. However I've had it say this and with a rub of the battery against my clothes. The contract must have been better because then it changed fine.
1580574
I've plugged in another brands battery pack like this and when I plugged it in, it instantly showed "fully charged" on it's indicators. However, I wasn't sure so pulled the plug on the charger and checked the battery voltage which was under 6V (showing that it was far from fully charged). So I plugged it back in for the 12+ hours and for the first hour, it stayed showing full (because the battery was resisting the charge power and the charger gave the lights the "full" 14V false reading), but as the battery began accepting the charge it dropped to 60% and then climbed back up over time. So don't be fooled by it showing that "full" within a few minutes, leave it plugged in for at least 12 hours (and by then it should be accepting the charge and the readings should have dropped, so once it raises again you can believe it's really "full".
1855438
no, because in order to check a non rechargeable battery you have to charge that battery first. And you cannot charge alkaline batteries.
2013698
Make sure its fully charged. I only figures this out after testing it out and seeing very short videos of the test. I know there has been some complaints of malfunctioning, but mine works fine.
1225594
This item does not require batteries to work. The tester uses the charge in the battery being tested (if the tester doesn't light up, the battery is dead).
1329368
Grannie: Yes, you can purchase an external battery charger that plugs into the wall socket and shows you when the battery is fully charged... As Drew mentioned, it works best if you have two batteries. Hope this helps.
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.
1144017
i believe i have seen it work after plugged on an empty battery.(cannot check for sure at the moment, but i believe i've seen this behavior.)
597442
you can charger the low batteries one at a time until you get about 25 to30 volts. then hook up your charger to test it out.
1073456
Check if hissing plugged in without batteries installed , if it does you know its not the batteries hissing. If only hear when charging ,wearing safety glasses, check for a over heated or leaking battery.Use only batteries charger is designed to charge.if all checks out should be OK. I never leave home while charging and have my chargers on a boot tray in work area and check during charging period.
1762850
My battery tester works fine. Making sure the battery is laying on the flat metal area than pushing it against the metal wire-like strip should give you a read out. If no action, request a replacement.
212891
Check the battery first. Then check the instructions to see if you followed it correctly.
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.
120240
Yes it does detect bad batteries by showing a blinking light for the battery or batteries.
2130875
it is a balance charger but if you have a cell that became discharged below minimal voltage then its not going to fix that. However if the battery just got discharged unevenly somehow, it may recharge it to full capacity. I am guessing that the battery developed a short and is probably defective, but trying another charger may fix it (if it was not discharged too far). Just be extra careful when trying to charge that battery and monitor it. Hope this helps you to decide what to do! It is a good little charger for the money!
2171696
Likely. Insertion of an amp meter between the HQRP output and battery a good idea to check whether within the 10 A max output of the HQRP. Voltmeter across battery helps to determine state of charge. Free Harbor Freight digital meters work fine in our applications. Search for 'hqrp user's manual' for links with videos of test configurations .
2111330
M_ENGLE and DUSTY comments contradicts what Bob commented...I want to use this device for load testing and confirm the condition of any battery......who am i to be believe now, because am about to place order.