How long does it take to charge the backup battery?
314482
It took about 5 hours to go from nearly dead to completely charged. I was able to run my iPad for an additional 10 hours without bringing it back to completely dead. I have also completely charged 2 iPhones without completely draining the battery. How much you are able to do will depend on whether you have to use your iPad or phone while it is charging, and whether you attempt to charge from a completely dead state.
314483
I can tell is quite fast!! Around 4 hours. And it let me charge my iphone twice!
1409240
I always charge the battery in the night time. It usually takes eight hours to get fully charged.
1177889
Gee I bought it awhile ago now and it plugs into an outlet, but I checked the description on Amazon and it doesn't say there's a backup battery. There is a little red light though, so if it were to turn off, you'd know it is not working.
266458
Mine had a partial charge so I can't be sure, but I think about 4 hrs to fully charge.
1214325
None of these answers look right to me.. From the manual: "It takes at least 24 hours to fully charge the battery". From the quick start guide: "Before you start, charge for 2 hours minimum". Basically: 24 hours for a full charge. If you can't wait to use it, make sure you charge for 2 hours before using it the first time.
146235
I haven't actually timed it but I guess it takes between 2 to 3 hours. It depends on if you are using it while charging.
849502
I don't recall seeing instructions on how long, but i left it charging about 3 hours. Both batteries are working fine!
1878767
Not long. about 15 mins. of run time. I bought a second battery so i could easily swap them out and keep going.
1071164
You charge the camera, not just the battery, by attaching the USB cord to the camera at one end and the USB-AC Adapter at the other and then plugging the whole setup into the wall outlet. It can take up to 4 hours to charge. You can also charge it the same way through your computer but it can take much longer. The battery is wafer thin and tiny. Because it is so small it doesn't allow as many shots as say a DSLR battery or a larger compact camera. So I have purchased a backup battery at Amazon so I always have one with a full charge ready to shoot.
1926914
I've never timed it, but it seems to be only a couple of hours to go from dead to full charge. Keep in mind this device can be used while charging which will likely slow the charge down.
1338585
I hard charge my battery everytime...overnight. I suspect it would take a full 8 hours. I also carry a second battery with me....never want to be caught out with a dying battery 25 miles from home.
1841300
When I first received mine, it took about 20 minutes to an hour to get a full charge. By the time I finally just threw it out (less than a year later) I would leave it plugged in all day and get about 30 seconds of use.
214999
About 2 1/2 hours if standard battery is pretty dead. My xl battery takes closer to 6 hours to recharge.
2074804
In my experience it depends on how far it has been discharged. The times I have needed to fully charge it, it usually takes about 2-3 hours.
1903811
Approximately 7 minutes. It's a small battery but it also doesn't take too long to recharge.
159578
5 to 6 hours which is not bad considering, another back up battery its very helpful for a maximum user. I love it . and plus if you plan to go that route for a spare battery you van also have that chargin, while you connect your USB charger to just charge it from your pone as well come with a built in USB charging port.
337635
I've only used the charger once a couple weeks ago and did not time it. However, I think it took around two hours to charge the battery that came with the camera.