Will it stop itself from over-charging?
1671734
No, that would be a function of the unit being charged, but I'm not sure there is a danger of overcharging with phones, etc. This unit is not as strong and , therefore, as fast as your regular USB cable from a wall plug.
1671735
That would be a function of the phone not the charger itself. I would have to say on my phone (Galaxy S4 Active), while it may not be charging, it gets very hot if left on the Qi charging pad overnight. I have gotten in the habit of charging during the day and removing the phone when it gets to 100%
1671736
Hi AMAZON CUSTOMER, Yes, it knows when it is FULL. The light changes with the CYCLE for CHARGING.
1671737
This connects to your phone's charging circuit which is already designed not to overcharge so long as you have a Samsung approved battery. Non approved batteries may not provide the proper feedback to warn the phone's charging circuit properly.
634453
I do not have this charger anymore, but if I recall correctly: it will turn off. However as long as the battery is completely charged it is in my opinion just cosmetic. R.
742899
No. It Does that while it charges. When it is done, all the lights will go off
1444723
Yes, but sometimes it randomly stops charging for no reason. It's really annoying.
796575
The thikness of nfc tag itself i think will not stop charging. But technically i dont know if will interface or not.
603236
I don't recall reading anything that warns you about overcharging. It plugs into the usb port of your computer and charges rather quickly. I have left it plugged in after it was fully charged and it didn't cause any problem that I am aware of.
1909338
This does not over charge, once the charge is complete it does not keep charging.
2159105
Well we plug it in and then come back later and have had no problems so I would say that it won't overcharge, at least that's our experience.
817178
It stops charging the battery once it's fully charged. I have not had it overheat.
1983381
Mine did. I tried putting a rubber matt over it to keep it from falling off, and it managed to make it too far away to actually charge.
204576
Yes, it does prevent over-charging. This is accomplished by the charger switching to a type of stand-by mode when the battery is fully charged. Its LED display shows the specific cycle in which the charger is operating. If the battery power drops to a level below full charge, the charger switches to charging mode to top-off the battery again. I am completely sold on this CTEK Charger! Also, it CAN re-charge a supposedly "Dead" battery, if the battery is still capable of accepting a charge. This is achieved through its "de-sulfation" (altho this is not the correct term) process.
783850
No, the battery cannot be overcharged. But I would not leave it on 'charge' indefinitely.
1872660
No. You would have to re-select the charging mode. It would just come on waiting for a selection to be made.
765024
No, provided you have had it charged. It will continue from where it was stop.
2220584
Yes it will, you are suppose to keep it on the charger. It will take a several days to lose the charge
2144748
no it continues to charge itself when in the sun. I would not recommend this item though. It only charges your device to about 30% max.
395237
I think it would possibly overcharge which would decrease the battery life. I charged it once and it has held a good charge for many months but I don't use it much.