Sooo...how do I know the battery is fully charged? Does the LED blink? Does it change colour?
648120
In fact, at the time it starts to charge (with battery inside), it must be in red mode (the charger light), but when it is full charged, the same light changes to green. If it begins in green you have to check if the battery is in right position, I mean, the connectors have to contact ones to each others (charger - Battery). If not, please adjust them until they contact together. it can occurs frecuently. good luck.
1208265
yes the indicator light does gradually change although I cannot remember the color indicating full charge I think it might be
496973
I'm assuming you have it plugged into a USB port to charge it or pressed the power button to check charge level. Accd to user guide, 1 LED blinking = less than 10% capacity and needs charging. After a few hrs of charging one light will be on solid, middle should blink, then middle solid, 3rd blinking. When fully charged all 3 lights should be on solid (~ 6 hrs). To minimize charge time use a 1A or higher USB charger vs a computer port which only puts out max of 1/2 A.
1179988
The LED for each port should be illuminated when charging at its full rate. As it approaches the battery's full charge, the LED should blink. The rate of blinking will diminish; when the battery is fully charged, blinking will stop - or blink only very occasionally.If your charger doesn't operate this way, it isn't operating as it should. It may be over-charging your batteries, or it may be charging correctly, but with no way for you to know when the charge is complete.You should contact the manufacturer and explain the problem. They'll likely replace it, if it's within warranty period. The LED for each port should be illuminated when charging at its full rate. As it approaches the battery's full charge, the LED should blink. The rate of blinking will diminish; when the battery is fully charged, blinking will stop - or blink only very occasionally.If your charger doesn't operate this way, it isn't operating as it should. It may be over-charging your batteries, or it may be charging correctly, but with no way for you to know when the charge is complete.You should contact the manufacturer and explain the problem. They'll likely replace it, if it's... » Read More The LED for each port should be illuminated when charging at its full rate. As it approaches the battery's full charge, the LED should blink. The rate of blinking will diminish; when the battery is fully charged, blinking will stop - or blink only very occasionally.If your charger doesn't operate this way, it isn't operating as it should. It may be over-charging your batteries, or it may be charging correctly, but with no way for you to know when the charge is complete.You should contact the manufacturer and explain the problem. They'll likely replace it, if it's within warranty period. « Show Less
957074
I just received mine. I am still letting charge to full power. The light is still blinking so it is no up to full power yet.
120423
Sounds like the charger. It's supposed to blink blue when the battery on it is charged.
535766
If you are charging the battery from empty, when you plug it in only 1 light will be blinking. After some time charging, it will be 2 (1 on, 1 blinking), then 3 (2 on, 1 blinking), then 4 (3 on, 1 blinking). After some time all of the lights will go off. That is when it is done charging. As this is a high capacity battery and usb is a low input source, it takes a long time to charge (as would any other backup battery that's charged via usb). Just give it time.
475011
The indicator light for 66-100% charge (which is green) will be on, not blinking. Otherwise, it would be blinking with whichever color corresponds to its level of charge.
1452043
Yes, there is an LED that changes from red to green when the battery is fully charged.
785074
Yes they blink until it's fully charged. The blinking led shows how far it's charged at the moment. The LEDs will all be solid when it's fully charged
123872
That indicates that it's charging. It will blink faster as it gets closer to fully charged. It will stay solid green once it reaches about 4.2 volts.
475012
Blinking charge light goes from blinking Amber, blinking blue, blinking green to solid green. Solid green indicates full charge.
176504
When you start to charge it a small red LED on it starts to blink. When it is fully charged it stops blinking. I haven't had mine long enough to answer your "how many hours" question. If the answer is not in other questions on this page, there is a similar device on Amazon selling for about $11. Somewhere on either that device or this one, someone said how long their's lasted on one charge. The time on the $11 device is probably the same as this one.
1610124
There is an LED light. It's green when they are ready to provide charging, orange (hard to see it different than red) when the batteries are low, and red when the batteries don't have enough charge to charge something.It stops charging the batteries when they are full. The light also says when the batteries are done charging. It blinks when they are charging. What the light says is printed in the bottom of the unit.
1018976
When the battery is less than 75% charged, the large LED pulses red as it is charging. Above 75%, the LED turns green and continues to pulse. When within 95% of full charge (I think that's the amount), the LED is solid green. This battery tender will alternately slowly discharge the battery a small amount and then charge it again. It is very gentle on the battery while cycling the charge at a low amperage, which keeps the battery's chemistry at an optimal condition for long life.
1551170
Seems like when it's fully charged, the blue light continues to blink. It would be nice if it stopped blinking to let you know that it's finished charging.
739202
Mine doesn't blink ... it's either steady read (charging) or steady blue (charged).