Does this have over-discharge protection? Or will it let you run the li-ion battery down to 3.2 volts if you don't manually turn it off?
1474640
I'm not sure, I've noticed that if I keep it on for a long time >3hrs, the heat becomes reduced.
1474641
I don't have a definitive answer for that, but I have charged mine many times, and it seems to stop when the charge is complete.
1474642
Yes, it has internal over-discharge protection provided by an internal charge circuit PCB. The same PCB that regulates the heat, light and charging.
852854
I would suspect it does not have overcharge or float mode to protect from overcharging. There are several out there that are made specifically for maintaining a full charged 12 Volt wet cell battery for around $10 to $15. I use one by Cen-Tech for an old Jeep I have to keep the battery charged.
440393
It may overcharge your battery though not likely.It does have a bypass diode which is only useful when connecting multiple panel in series. The diode has nothing to do with overcharge protection.You should consider adding a diode in series with the + lead to prevent leakage at night. Again this will have no effect on overcharge.It may be easier to add a charge controller.
326330
My guess is that it is designed to shut off when the lithium ion batteries sends a voltage signal to it. None lithium batteries do not do this...I would email the company and ask them...
1419809
I guess I don't know what protected/unprotected lithium cells are. I can tell you that the one that came with my radio didn't last very long and the new one I ordered doesn't appear that it is going to be much better. It is suppose to be 3.7 volts but neither of them lasted very long. I can only get to to charge up to 3.58 volts by hand. I know that the crank is running the voltage up to the 5 to 6 volt range, so it should charge higher. Not sure what I will do now? Don't know where I can buy another battery this size at 3.7 volts?
905740
I do not know the answer to your question. All I can say is that I have not had any issues with overcharging or over discharging of these batteries. I have been using this type of batteries (5000mAH) for the last two years.
1220389
Yes, You should put a charge controller in line to batteries, rated at the proper amps/watts so you don't overcharge batt.
1178271
It's a cell not a circuit. I use only Li-ion and Li-Polymer 9 volts on about 20 projects that continue to run to discharge with no problems; a smart charger exclusively for these batteries has the circuit that has yet to fail to charge any of these 'over-discharged' batteries. Most electronics stop working at a certain voltage long before the battery is totally discharged. Still, even with current-hungry circuits, none of the 40+ various lithium 9 volts I use for the last year and a half have failed with constant charge/discharge.Can't say the same for NiMH.
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.
703085
No..once you put the cover down, it automatically turn the switch to off....i think for safety purposes not to drain your battery or any power....hope this will help!
1553523
It would eventually charge it, I wouldn't leave it on any battery indefinitely though as it has no automatic mechanism that will prevent overcharge.
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
2187594
Usually, over 80%， device has overcharge protection to protect battery. The overcharge protection is coming with device not charger I think. Hope this helps
1157879
Regardless of what vehicle it's in or if it's running packs in parallel or series I've always stopped at 3.6v/cell when the pack is at rest. You could possibly go lower and still be safe, however I noticed that my packs lasted a lot longer stopping at 3.6v/cell. Also I found these alarms to be rather quiet. Just a heads up. Enjoy &#128522;
1534415
If you have no other way of knowing how low the battery's voltage is during use, you run the risk of damaging the battery (and greatly reducing its useful life time) by discharging it below the 20% point. LiPo batteries REALLY don't like being run all the way down - that will kill them very quickly. So either a device like this, or an alert LED on the vehicle itself, needs to alert you when you get down to that level.
1665889
Yup! I use it on my 12 Volt boat batteries and my 12 Volt car batteries. Like it because it shuts itself off when reaching full charge. My older chargers of a different make could overcharge a battery if left on too long. It is a tad slower than some chargers, but I believe a slow charge is better than a too fast one. I disconnect it when I notice a full charge is reached and in a few months will recharge the battery if the battery is left unused. Hope this helps.
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.