will it work on an empty battery charge if plugged in?
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.)
1144018
Yes, it will work if the battery is discharged. The light will turn on as soon as you plug it into an outlet.
1403101
I can only answer for the one that I own. I can plug it in and it runs just fine, especially when battery is low. If your battery is completely dead, with no chance of ever charging again, it probably has a short and it, theoretically, will NOT work when plugged in either due to the shorted battery. I hope somewhere in what I said you find the answer that you were looking for.
962227
Yes it will charge the battery. Once u get the battery in the charger make sure the light is on. That let's u know the battery is connected correctly. Once u do that u just plug the whole thing into an outlet.
284649
Yes..it will charge it. Takes a while if battery is drawn down all the way.
2171116
Yes, it must be plugged in to be used. The good thing is, it won't run out of charge during use.
1801580
No. Once it's plugged it will turn on perfectly. Once unplugged, it will turn off and rest.
2047478
Nope. It charges when it's plugged in, so you can unplug it and it works without a cord. It has an on/off switch to save power when you're not using it while it's not plugged in.
1631424
I would say no...I tried this product on batteries where the charge ran to low and it didn't work at all.
341554
I dont see why it wouldnt. I would check if the voltage is high enough to provide a charge though
101412
Didn't try that myself, but it worked when I plugged it in. Use it while it charges...
437994
If I charge it, there are four indicator lights that come on. If it's completely empty, none will go on, but as it charges, it should build up from none to four (four lights on means it's fully charged). You may want to wait a while and see if one comes on, if not then I'd say it doesn't work...
2013238
did it work on plugging it in to electric socket. If it did then the battery should work. If you are running just on battery it may need to be charged overnight before using
229972
No... but if you are talking about a battery that had the lights left on overnight and 'dead' it will not charge if it is below (I think 2 volts) some minimum voltage left in the battery. It IS very frustrating because the older 'not so smart' chargers would at least try to charge a dead battery where these smart ones won't work at all. I faked one out once by connecting a small motorcycle battery to my dead car battery and fooled the 'smart charger' to start working and then put the motorcycle battery back. Battery was fine after about 6-8 hours of charging.
1667797
You would have to use a battery tester or a voltmeter whcih will tell you if there is still a charge on the battery
1838963
Yes it will. Almost all chargers any more will quite charging when the battery is full. They have circuitry that will monitor that. Whether it is a cell phone, lap top, or golf cart.
2267852
The answer to this question is absolutely yes, but it will take a very long time to do so, probably so long you don't need to worry about it. Even if no devices are plugged in, there is still a small amount of current (quiescent current) drawn by the device that converts the battery voltage to USB voltage (5V). I am an electrical engineer that designs power supplies.
630476
I supposed it will charge it if it works. My unit did not get charged nor did it charge anything.