WIll this battery auto shut off when charging with the USB cable? I don't want my house to burn down from an exploding battery.
1575281
Yes - most USB LiPo battery chargers do shut off when the battery is full but, they are not reliable enough to leave unattended.
2072631
Yes. It will run off the charger (any mini USB charger or PC) while left on. Don't leave it off with the charger attached.
449517
The charger shuts off by itself when the battery is fully charged. No problem with over charging. As for the cord, just a ordinary extension cord that has a single receptacle on one end such as you would find at Lowe's or possibly Walmart, ect. This is not a problem, but it would seem that they would send a short one with the jumpbox.
649573
If I remember correctly, it should just turn off. I used it for a dead but relatively new battery and it worked perfectly. Just keep in mind that it took three days or so to fully charge.
1541567
No it won't fry your battery ..it charges the battery good and there is a light on it that changes from red to blue when fully charged
2223348
Greetings. This receiver will automatically shut off while charging. Thanks for your question.
1067693
I just leave it alone. As long as its not charging another device it will turn off on its own.
1032669
Due to the compact design and relatively high charging current, batteries can become toasty hot _if_ the BCG34HRE missed termination signal (negative dV/dt) - especially with the charger cover closed. I did an experiment by charging four nearly full Rayovac 4.0 Hybrid AA cells together (this is to force the worst-case scenario where all batteries are being over-charged), and measured the cell temperature with an infrared thermometer. The highest temperature recorded was 62 degree C, which is too hot to hold for most people, but not high enough to cause a meltdown. Note that this will NOT happen if you recharge partially exhausted cells (because then the charger can terminate correctly by detecting negative dV/dt). But to be safe, I recommend charging with the cover open or removed.
2160547
No. It will slowly drain the battery. I have several of these, and store them disconnected.
845170
While the JNCAir does have a auto shutoff for AC charging, it is still not recommended to keep it plugged in all the times. DEFINITELY do not do that if recharging with DC power. Recharging with DC power works, but there is no auto shutoff and the battery (and you) might get damaged if left in too long. Charging with DC is only for emergency situations. basically, just leave it plugged in about 20 minutes to a couple hours, depending on how dead the JNC is. ok, sorry I went off on a tangent..so NO, do not leave it plugged in charging at all times, only charge it if it needs to be charged
817178
It stops charging the battery once it's fully charged. I have not had it overheat.
1018654
Many chargers auto set to these batteries. If you have a charger from years/decades ago that does not automatically switch off I would watch very carefully. You could overcharge and short the battery.
119493
No, the USB charger circuit never completely powers off, though it does reduce its power usage.The unit I tested (the "decor" style, which almost certainly uses the same electronics as this one) continued to draw a bit less than half a milliamp at 120VAC when nothing was plugged in to it. This is according to a digital multimeter that I wired in series with the hot lead to my house wiring. Note that it was neither a high-end multimeter nor an oscilloscope, so it should be considered a rough reading, but should still give you a general idea of what to expect in the way of power usage. No, the USB charger circuit never completely powers off, though it does reduce its power usage.The unit I tested (the "decor" style, which almost certainly uses the same electronics as this one) continued to draw a bit less than half a milliamp at 120VAC when nothing was plugged in to it. This is according to a digital multimeter that I wired in series with the hot lead to my house wiring. Note that it was neither a high-end multimeter nor an oscilloscope, so it should be considered a rough reading, but should still give you a general idea of what to expect in the way... » Read More No, the USB charger circuit never completely powers off, though it does reduce its power usage.The unit I tested (the "decor" style, which almost certainly uses the same electronics as this one) continued to draw a bit less than half a milliamp at 120VAC when nothing was plugged in to it. This is according to a digital multimeter that I wired in series with the hot lead to my house wiring. Note that it was neither a high-end multimeter nor an oscilloscope, so it should be considered a rough reading, but should still give you a general idea of what to expect in the way of power usage. « Show Less
1960807
Mine gets pretty hot, I charge 5 battery power packs. Not sure if it is too much or not, I just hope the circuitry shuts it off incase it gets too hot...
780121
Newer models have a voltage regulator so they can be left plugged in constantly, but older models didn't have that and could be damaged if left on too long, so you may get mixed messages about this. This is from the description here on Amazon: "The onboard battery automatically stops charging when it has reached a full charge--allowing you to keep the JNC660 connected to an AC outlet indefinitely without causing any harm to the battery." What I've done to insure I'm not leaving a few batteries I have "drained' but am also not leaving them plugged in 24/7 is set a timer on a charger to come on for 15 minutes a day, otherwise I "manual charge" them right after using them.
600540
I did not engineer this product but usually all modern recharging systems will automatically shut down when the battery is fully charged. Should you unplug the power from the product, and not use the appliance for some time, the battery will slowly bleed off power. I personally leave them plugged in and periodically let them discharge in order to cycle the battery.
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