Why does the light change back and forth between green (charged) and yellow (charging) after staying yellow for a while?
1485558
When your battery is used (which is always is when installed) the battery maintainer will sense the need to re-boost the charge after is drains a bit. That boost is what is occurring when the yellow light comes on. The battery is thus maintained near the optimum level.
1485559
It would seem that is "pulsed charging" to avoid boiling out the battery, but also perhaps to keep the charger from overheating. I also own the SC-200A and it stays yellow until the battery is fully charged, however it does take longer to charge using less amps. Hope that helps.
2091368
What color? Should be steady red, then turn steady green when charged. Maybe you left on the charger too long?
250654
A red light comes on when charging. When fully charged the light goes off. It doesn't change color.
287886
i think is common sense, because once the battery is charging the battery stays orange-red, and when light turn green i think is fully charge. but the light never goes off from the charger. stays always green.
475012
Blinking charge light goes from blinking Amber, blinking blue, blinking green to solid green. Solid green indicates full charge.
758441
I want to say that it moves between a flashing blue light (charging) to a steady blue light but I am not sure.
1883885
Mine is green all the time, unless I pull it out of the wall and use it. Then when I plug it back in, it's red for a time and then goes back to green. So I assume red is "charging" and green is "charged."
1208270
I'm pretty sure it changes to green. I haven't charged mine in a while so I'm not 100%.
309107
Blinking light means it is in charging mode. Should go back to green after awhile.Sorry for your loss.
1767842
I think I figured this out. In a two bay charger when one is charged and the other is still charging the RED led bleeds into the GREEN. Under the case there is probably nothing to separate light transmission. Simple 'color wheel', red and green make ORANGE.
975054
while charging, the led light is red. once fully charged, the led turns green.
978728
Yes it does. When they are charged the light will change from red to green.
300343
I think it's when you turn the power on and the light is red instead of green. Just happened to me. I changed the batteries and the light turned green.
1412457
I rather agree with both the previous answers. When you say the light goes quickly from green to off, do you mean immediately? If so, I would check that battery in your phone to ensure that it is fully charged. I have had similar experience with a battery I was unsure if charged or not. Even so, the light would turn green, then remain orange perhaps a minute, then turn off as it was fully charged to begin with.
1208265
yes the indicator light does gradually change although I cannot remember the color indicating full charge I think it might be
506121
It blinks green when its charging then solid green when its charged....Move the cables n put a little Vaseline on the battery . This works for me.
360438
I believe when the led turns green. I always charge it a few extra minutes after it turns green just to be sure :)