Can this device be left plugged in to a charger all the time? I would only expect to use it in emergencies. How long will it keep a full charge?
303117
It holds charge for a couple of days even after you have charged your phone.Don't leave it plugged into a charger all the time. It tells you when it's fully charged with the LED lights on it.
303118
I charge mine upFully and then throw it in my pack or truck. It will hold a charge for a long long time. Go for it. It we'llWorth it I love mine
303119
Yes. It will shut down the 4 led status lights even if left in charge. So no overcharge or heating issue. Unplugged it will last a very long time I tested a week in stand by and still all 4 LEDs on. Good product . very happy with it
303120
I use it for my cell and tablet and it stays charged for about 3 days to a week depending on use. As for keeping it plugged in, i would for safety just charge it and turn it off. If its not in use, it turns off to not burn the battery out. It is well worth the money. Mine has paid for itself more then once
1599347
Everybody's situation may be a little different. I use mine daily for work, run it down to about 50 minutes or so remaining then plug it back in to recharge. Mine takes about 3 1/2 to 4 hours to return to fully charged state regardless if I still use it while recharging or shut it down. I always leave it plugged in overnight anyway.
1743488
No, it can only be used while unplugged, but it holds a charge for a good hour.
2181024
The end that charges the item has to be plugged into a USB receiver. Either a PC or an iPhone plug that plugs into the wall. To add to my last review... I must say that after re-charging it and using it a few times, it seems to be holding a charge way longer then the first time, making it more handy to have for emergencies! I'm considering purchasing another for my teenager. Hope this helps!
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.
1472485
It can be plugged in at home to recharge or in most all electrical outlets anywhere. It really comes in handy when a jump is needed. Have used ours several times, when wiring in my car kept pulling the batteries power down and killing it! finally is fixed, but still keep it charged and in car when traveling because you just never know! Hopefully this answers your question. JWA
929443
You should be able to hold the storage battery power that is not used in one sitting for at least a week. I have not used it after an on the go quick cell charge and then didn't use it again for as mentioned above.. A week and I still had the same charge it had when I turned it off. I think that heat and extreme cases of cold conditions definitely play a role. Obviously try to keep it at room temperature and not leave it plugged in past the fully charged Mark. This will extend the life of this great product. I have had it for a good 8months. And not a single complaint!
531704
The person I purchased this unit for, leaves it plugs in at all time. She unplug unit for several day while on vacation, and the battery died. So I suggest you leave unit plug in at all time to preserve the battery life.
1536598
Yes. I leave it plugged in since I use it at home. If the battery runs out, it will take some time before it charges enough to use again. I expected it to work as soon as I plugged it in but it didn't.
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/
2042974
I honestly haven't had to charge it as of yet.. we have used it tons.... sometimes I just stick it in the window and let it charge a couple of hours., or to keep it charged... I have purchased over a dozen of these for family members and for gifts... we take them camping and use as in emergency power outages.. they are WELL worth the money!
1544806
Yes, no problem. Recommended so you don't run out. I keep it plugged in when using.
1249350
It is not recommended to run it while plugged in. Like most rechargeable products, it it intended to run from only the battery. Properly charge up the battery before use, let it discharge and then recharge.
2234675
Think of it like a cell phone. You need to charge it once in a while (great battery life), but you can use it while it is charging. You can just keep it plugged in forever if that's how you want to use it. However, it does shut down (after 15 minutes) I think of inactivity, even if its plugged in
1901425
you can use it plugged in but it only takes 15 mins to charge mine. I have used it for 2hours on a charge. I would not let it plugged in all the time the heat of the charge will shorten the internal battery life over time.
1106236
I'm not sure if I understand the question. I would imagine the amount of time depends on what it's attached to. For me, I have a Galaxy S3 and it will full charge it from a very low level as long as I'm not using it too much. If I'm using my phone extensively while plugged to the portable charger, it will keep my phone alive about the same amount of time as a fully charged battery.
503416
You *can* keep it plugged in, but it's not good for the battery. It's better to charge it, then let it run on battery. It warns you about 9 days before the battery goes (when you go to take your temp in the morning, you get a "BA09"... the next day "BA08" etc. But it still functions on those days. I think I charge mine overnight about once a month? So, you COULD leave it plugged in, and it would still function, but my understanding is that you'll reduce the longevity of the machine. (When you need to rely on the battery, the battery life might be compromised.)