Could not find any information on charging in manual. How to know if they are charging correctly? While charging can they be on or off, or either way?
653578
You can not use them while they are charging. The charger goes into the phone jack. You cannot monitor them either. They are silent when charging whether they are on or off.
1190741
The instructions say to take them out when charged. You could leave them in for a while longer but I had a charger smoke on me doing that, so I take them out and put them in a special box I got from XTAR
934678
Ive had no issues with mine not working due to rain harming wiring. I would turn them to the off position until you can get a few days of full sunshine, then turn them back to the on position. This will get the battery a good full charge. I think they will be fine once you do that. So basically to answer ypur question, YES! They should work fine once you start getting full sun!
914162
Yes, they are not charged as received. Mine were all setting around 1.2 volts which is almost fully discharged.
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
1617203
I have had luck charging them on mine.... Are you sure the contacts are clean? Check that and the contacts themselves to see if they mate correctly.
334385
The first time you charge them should at least be over night, just like a phone battery. Other wise it wont keep a charge.
1909152
There is no indication that they are charged, just that they are charging. They will fully charge in 3 - 4 hours. I have two of these dual chargers and two single chargers and i built a timer box to supply power the the chargers. I usually set the timer for 4 - 6 hours.
1878945
You will have to use a "dumb" charger to charge them up a bit before your can use them with this charger. Hope this helps.
1080208
Well, there was a manual with instructions on how to charge/use it. Does that answer your question?
135747
The line in does not power the headphones, they needed to be charged separately. When they charge is gone they don't work until charged, the charge is done via USB, but they won't charge and work at the same time. BTW, I would also want to let you know that I had serious problems with one ear being much louder than the other. Make sure you test that immediately when they arrive if you choose to purchase them.
2163635
When I got mine, they were fully charged. If yours are not, they may be defective or may be very old and might have lost some of the charge.
2188773
I had the same problem. I charged them for 18 hours and the red light never went out. Once I paired them with my phone though the charging indicator functioned correctly.
1436300
It happened to me as well once. It happens when you forget to turn them off before charging. Then some or all the keys don't work. I'm guessing the problem has been fixed already since this answer is six days after. But you just have to wait for the battery to run out and for them to turn off on their own. Then you recharge them and turn them on. To prevent it from happening again always turn them off before you charge them.
350440
You can do both. I usually charge them, when not using them, in the off position. When I am using them for long periods of time and I notice they are starting to die I will plug them in. Either way is fine though.
1153210
Recharge these anytime. In fact, best to NOT let these run down entirely, as these (unlike Ni-Cad) have no 'memory.'Mainly don't overcharge. These take about a 2 hour charge, and overcharging in an attempt to bring them up to full capacity cause battery 'stress.' You can get the full, more scientific answers to your questions if you Google. Also, remove from charger after charging.
969753
Have you properly installed batteries? Have you charged them if they are rechargeable?