They only last 2 hours on high &amp; more on low. So if the power is out for more than part of a day you can't recharge them until the power comes back?
1252414
Correct. This is an emergency power failure light. Its main purpose is to provide you some light for a few hours, so that you can get to safety or find some other light sources. It is not powerful enough to light up a room or to last overnight. For that you'll need an LED lantern that runs on D cells.
1297578
Leon, I've had mine go for 3 full days with intermittent use maybe 3 to 4 hours a day, before I've become afraid they are going to be dead and charged them.
1131159
There are higher output non-rechargeable batteries. These wouldn't power a device I have which will run for about 8 hours with Energizer Ultimate Lithium. I'm groused I can't seem to find a rechargeable that'll power the device.
1014613
I recharge mine and they seem to work fine. I usually only recharge them 2 or 3 times then I toss them.
352463
They will last through the night but only one (or maybe two) nights. The battery would quickly be extinguished and you would probably spend a lot on replacing the battery every other night. I also use a nightlight but I use a small light that plugs into the wall with a nightlight bulb in it. I also have one of these http://www.amazon.com/GE-Flower-Design-Incandescent-51386/dp/B002DNG9A2/ref=sr_1_18?ie=UTF8&qid=1410570644&sr=8-18&keywords=night+light which works really well. Hope that helps! These Mushroom lights are still fun and are really good for a few hours a night!
606309
The instructions say to only use the rechargeable battery that is included but I used regular batteries when it died one day and they worked fine. I only used them for a couple of hours then charged the unit again and have no problems since. I'm guessing you could also use any rechargeable AAA, but I've not had these long enough to run the included batteries out.
924239
Yes, they are rechargeable batteries. I will say I wished they lasted longer. I think mine last about 1 hr when not hooked up directly to the outlet.
612583
I actually plug them in to charge and forget it. But I would guess an hour or two would be sufficient.
2269894
That would be up to you, you said they work , how long do they stay on? You should be at least get a few hours out of them we use several of these at our shop and have had a variety of problems that being said , they are the best solution we have found for the price, I left one charging overnight and it finally turned green .
624559
The batteries last surprisingly long, many hours of use. Yes you can use rechargeable batteries but you'd have to remove them to charge them.
81509
I charged mine for 24 hours before using them. They work great! I have noticed that when they are not plugged in they only stay charged a couple of hours.
821597
Check and make they are switched to the on position. There is a button located on the back. Also, make sure they are fully charged before using. I charged mine 2 whole days in full sunlight. When charging make sure the switch is in the on position.Turn them off when it gets dark do this for 2 days. I have 2 sets I did this with both sets and they are working fine.
1477937
they have a small amount of charge, but it is reccommended that you slow-charge them for 8 hours before you use them.
1827652
They only draw 200 mAMPS (0.0000002 amps) so the wattage is really insignificant if you are worried about battery life. I am in road construction and normally leave mine running for 5-6 hours and have never had a problem. FYI: I run these at the same time I am running my overhead light (strobe) and four corner strobes.
1354693
not easily -- they recharge themselves in normal operation. We havent done any thing to stress-test how long the batteries last before needing recharge.
2279447
No, they don't turn off during the day. But you don't notice them when it's light out, and they use very little power.
1106970
I do not even try to use them until I charge them fully. I can't see how they could come fully charged.You never know how long they were on the shelf.