How do you know when it's done charging?I'm charging 2 18650 LI-Ion batteries and it's showing 1 LED on and the second one blinking.
1003556
the flashing indicator lights stop flashing. There should have been an instruction sheet with the charger. They also recommend you charge the batteries four at a time or in pairs : positioned 1 & 3 or 2 & 4 . Not 1 & 2 , 2 & 3, etc.
723900
When all 3 LEDs are solid it is done charging. I find it does take 18650s longer to charge but they do have a higher capacity than the 18490s I mainly use
1003557
When it blinks its charging , when all 3 leds are blinking its almost fully charged and when it does fully charge, only 1 led stays on to let you know its charged
2175298
HI - I am not an expert.....not even a novice....but we aslso bought these and when they are charging from any active USB port (i.e. - is your computer or TV turned on?) --it should blink red as it is charging and then green when fully charged......If not ...it is defective. Good luck
902276
When I have put two batteries into the charger that need charging, both light red. If I put one in that needs charging only that light comes up red. When they are finished charging the lights turn green. I've never had them flash.
1376311
The indicator light does change to show that the battery is fully charged. I haven't used my charger in a couple months. So, I don't recall exactly what the light does. If memory serves me well, it actually blinks red when charging, and shows solid green when it is done charging.
1411309
My light (green) stay's on when charging. It goes off when complete. Mine only blinks when the battery is low. It sounds as if your battery might be faulty.I never use tech support on anything. They usually know less about their products than we do!
1164906
There is just the 2 red LEDs and 1 green one for the "charge level" indicators, correct? If so then seeing both red and the green LED come on when you push the test button does hint it is fully charged. If this is the first time you've charged it (where it can take 24 hours to charge), then I'd double check that it's full by pulling the plug on the charger and then push the test button again after 30 seconds. You should still get the 2 red LEDs, but probably not the green. If you have a volt-meter you can also check the battery voltage on the jumper cables, full is ~14V with the charger plugged in and without it plugged in it should drop to ~13V and hold there. If you suspect the battery being bad, then the way to test it is with a known load and see how low the voltage goes. For example, I plugged in a spot-light that pulls ~4 amps and a good battery had the voltage drop to 12.4V instantly and very slowly dropped the longer I had it on (like after a minute only dropped to 12.3V). A bad battery instantly dropped to 11.2V and within 30 seconds went down to 10.5V. That's how you can tell if it's really bad.
1083593
Either you connected it wrong, or you have a dead battery. The two lights should be indicating a problem with charging.
583061
According to the written text on the charger it states Red Light Flashing - "Reverse Polarity or Battery Fault" So I'd double check whether you connected the leads wrong then get a battery tester to make sure an internal short does not exist. Hope this helps anyone reading this question.
2202602
Hi Greg, when you first begin charging the green lights blink a few times, then glow steadly while charging, when charging is completed, the lights go out.
1490668
No. It sounds like a defective unit. The LEDs should only flash when charging.
301433
Correct. While charging, the led should be red. Once charged (or if it's already charged fully and you plug it up) it will turn blue. At some point after it is fully charged, it will turn the LED off, but I'm not positive how long before it does that.
1910795
No, but you can find some videos on YouTube that show off the options. The charging lights should blink letting you know where the charge is out. If your batteries are all but dead, there shouldn't be as many lights blinking. The closer it gets to being charged, the more lights should blink. You can also plug the light directly into the wall using the same charging cable that comes with your light.
2252136
Just put 2 batteries in on one end, you will see two lights flash then one will turn off leaving only one on the side charging.
558614
I've never had this issue. You know it is fully charged when the light quits blinking.
412342
I have a problem, that might be related and I wanted to ask people as well. When I put the battery in the charger (I have two), most of the time, even though the battery is empty, the charger shows green light and does not charge. I have to put the battery in slightly elevated angle and push on it and then it will start charging. So maybe your batteries were not charged at first place. Also happens to me, that the batteries discharge if not in use for 2-3 days, so before use I always recharge.
1910794
Hello Steve, The lights will stop blinking once both batteries are fully charged.
2205817
Well you have to put at least two batteries in at a time and there is a light above each spot for the two battries, so there are two lights. When you put only two battries in the lights will alternate back and forth to "find" the battries then one will stay on, green, above the battries you put in to tell you they are charging good. The empty spot will have no light. Then when the charging is complete the light will just turn off. I can't remember but I think the instructions said something about blinking and other colors like maybe orange or red to indicate "not charging" or "bad/used up" battery. But the short answer is yes green while chargeing then off for done and they can't be over charged. Well you have to put at least two batteries in at a time and there is a light above each spot for the two battries, so there are two lights. When you put only two battries in the lights will alternate back and forth to "find" the battries then one will stay on, green, above the battries you put in to tell you they are charging good. The empty spot will have no light. Then when the charging is complete the light will just turn off. I can't remember but I think the instructions said something about blinking and other colors like maybe orange or red to indicate "not... » Read More Well you have to put at least two batteries in at a time and there is a light above each spot for the two battries, so there are two lights. When you put only two battries in the lights will alternate back and forth to "find" the battries then one will stay on, green, above the battries you put in to tell you they are charging good. The empty spot will have no light. Then when the charging is complete the light will just turn off. I can't remember but I think the instructions said something about blinking and other colors like maybe orange or red to indicate "not charging" or "bad/used up" battery. But the short answer is yes green while chargeing then off for done and they can't be over charged. « Show Less