when the batteries reaches full charge do I have to be there to turn it off. or will it take care of it .. and not over charge my batteries..
317466
The charge controler will flash "full charge" when the battery is full yet there is still sun. Fully self controlled.
317467
In the photo it looks like it has a controller with it, if so no you don't, this takes care of most everything.
317468
It should have a regulator that when it reaches full charge it will "float" the battery charge... try renogy Web site for more info or call them... I had a question and they were very helpful and knowledgeable
167154
Hello Harold, I had never turn it off because in the user manual says that it turns off automatically, I have been using it for about 2 months and I did not replaced the battery as you mention.
129176
This is a battery maintainer, your batt. should be charged before you use this.
2147845
It charges till its full then auto shuts off. Problem is after a while, it charges for 30 seconds then shuts off. Seems like batteries die easily. Hope this helps
267276
No there is no shut off when battery is full charged. But there is a diode built in to prevent discharge during the night. This is used to maintain the batteries charge.
1173232
Mine does the same not sure y .I'm assuming its at full charge .if u find out different let me know pls.
29032
yes it will not overcharge, once it drops below full charge it brings it back up. I have three of these and always leave them in with no problems
615207
I always turn the headset and sending unit off when not in use, and place the headset on the charger. That way it will always have a full charge when you want to use it. I have never used the unit long enough at any one time to completely run down the batteries.
1787637
I have had mine in use for several months with no issues. It is off all the time when not in use so I am not sure what would drain the battery. A friend of mine has one going on three years old and has never mentioned issues with any part of it. One of the reasons I bought this one.
1372969
I think it might be that your battery is dead, LiIon batteries are highly sensitive to overcharge, meaning that they are damaged when you keep your charger connected after it has reached 100% charge. Get a new battery and try to avoid extreme charge states (full discharge and overcharge) are bad for your battery, don´t let it fall under 20% and don´t chrage it over 95%!! Hope this is helpful
2130034
Once the battery is fully charged, the controller will float the charge to the battery, this prevents overcharging. In other words, the controller ceases the charging once its full.
49451
I'd look in the manual for something saying "It will not overcharge if left plugged in". If you can't find such, then I'd plug it in and check the voltage on the battery every hour for 4-6 hours. If the voltage never goes above ~14.5V everything's fine, but if you see 15V or higher then you're "overcharging" and want to pull the plug.Another option to consider if you like the idea of keeping it "freshly charged" would be to put it on a timer that comes on for 15-30 minutes each day, but isn't on 24/7.
2071386
There is no need to turn it off. I've had this for two years and batteries are still working. It goes into a low draw sleep mode. Don't worry about it.
928403
Hello Jeff, it will turn off automatically! I have been using mine for over a year and have had no trouble leaving it to charge overnight
204578
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. 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... » Read More 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. « Show Less
1686531
I honestly suggest that you should not leave it there overnight so it will not over charge the battery itself. thanks
1372968
I think it might be that your battery is dead, LiIon batteries are highly sensitive to overcharge, meaning that they are damaged when you keep your charger connected after it has reached 100% charge. Get a new battery and try to avoid extreme charge states (full discharge and overcharge) are bad for your battery, dont let it fall under 20% and dont chrage it over 95%!! Hope this is helpful