Does it have auto shut off when fully charged? ( Can it be left plugged up for long periods? )
1585701
Yes it has an auto shut off. We leave ours plugged up. This is the second one we have owed, it is a good product.
1585702
Yes it is auto shut off. Great light. I have had many brands not really pleased until this one.
1087177
No. In fact if you plug it in to charge while on, it will shut them off to charge.
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.
116011
Yes, it automatically turns off after between 15 and 60 minutes while on battery if there's no activity, depending on the situation.
833288
This charger does have an auto shut off feature that's suppose to shut off the charger to prevent overcharging. I haven't needed that feature, so I can't tell you how well it works, only that's it's available.
300295
Yes, it has a automatic charger built in to it! Starts and stops when needed but can be left plugged in at all times when not in use.
247756
No, charging light stays on all the time. I leave it plugged in all the time and have used it till it is completely dead. It doesn't seem to have lost any time per charge yet. So far the only draw back I have with it is that there is no wall mount for it.
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.
172519
It doesn't hurt to leave it plugged it for a few hours to a day after fully charging. Letting it drain completely does more damage to the battery. For a more complete answer read this http://www.howtogeek.com/169669/debunking-battery-life-myths-for-mobile-phones-tablets-and-laptops/
448100
it does have an auto stop when charging with AC. The light will go from red to green to let you know it is fully charged. You can leave it plugged in without damaging the unit. You can not do this with DC. as with your car lighter socket. You can overcharge the battery and damage it. Hope this helps.
1580478
It will keep charging your phone until you unplug it. I had my backup completely charged the other night, I left my phone pluged into it and by the morning the backup was drained because it never shut off. Even after my phone was 100% charged.
1835362
When you charge the device, it will be automatically turned off...you have to reconnect it after it is being charged!
1955076
Yes. It shuts off when charged. The lithium batteries hold a charge for months though. Not like the old NiCad batteries.
1330393
I do not think it has automatic shut off. I never leave it on more than the normal use.
2256709
Does not have to be plugged in all the time. Just after using it and every 30 days. I don't know how much current it uses but you can keep it plugged in and it'll stop charging it once it's fully charged
938650
you can leave it plugged in as long as you like. the light changes color when it is finished charging. will need new usb cord though. it may also break if you are trying to recharge a high amp device. my GF uses it every other day, it gets pretty hot when charging her phone.
811338
We leave plugged in most of the time but it holds a charge indefinetly unplugged. I hope it helps.