1. How long does it have in the sun for a full charge? Cloudy days, too? 2. How long does it have to be plugged in (USB) for a full charge?
191990
I am not sure, but every day I would place it it the window and let it charge all day, then I was using it for a few hours a night, and it never lost its charge. I dont think it plugs in to the usb ports, just solar. I love mine, its well worth it. I have 3 different solar lights, and this one is my favorite. I just make sure they are in a window everyday, so it is always ready. Yes, it will charge on a cloudy day, maybe not as much. I think I am done with battery operated lights.
754353
I couldn't tell you... but mine will charge even on cloudy days. I'd say yours is defective.
488302
lithium cell battery, approximately 4 to 6 hour lifespan, depending on what all you have running in background and depending on which model, series, and if you have the 500 HDD or the 1 TB and if yours comes with a SSD (Solid State Drive) .... I can run as long as nearly 8 hours with the 3 TB USB EXHDD Slims (2 TB and 1 TB) which takes the load off the system; there is an option for power saving mode as well So you can kill some Tasks that are not necessary if you are in a bad weather and has the need to communicate outbound such as in an emergency,. I personally plan on purchasing 2 more ION Lithium Cell Rechargeable battery cells and just simply use finger nail polish and mark them 1 and 2 since the blank one is original to the Dell - it is a good practice if you live in a notoriously known weather zoned area. In my humble opinion, rotation of cells and keeping them charged will pay for itself. This is a pretty fast recharging unit if it is plugged in. General rule of thumb here is: How often does your power go out? How frequent is your area prone to storms? I personally know some people who have as many as 5 to 7 back up cells and they get them all charged up before storms comes or before the storm season comes for their area is know to be out of power for as long as a week to 14 days or even longer. The key point is, family first, but before storms come it is a good idea to let your credit to store card financial institutions to be alerted ahead of time even Mortgages so it doesn't go against you. You would want to touch bases with someone in your family or two who can relay messages to others of your status like every other day. Checking the news and weather report for a short moment helps a lot here; but resist all temptations to contact friends or assign a friend (trusted) as one did, so that password was switched and any email news given to this person would be relayed to this person. Anything of vital importance, you would know it at this specific assigned private email account. Everyone else can wait.
375785
Yesterday I was using it to power a usb speaker and it continued to work when the sun went behind a clouds. That leads me to believe it continues producing energy even when it's cloudy. Though I'm sure the output is reduced.
1563378
I get only about 12-17% charge to my phone per each charge of this solar device. The solar device takes about 20 hours to charge in the sun
1655982
Not good. It drains really quick depending on what you are doing. A full charge would last about 1 to 2 hours. However I have it plugged in all the time so it is not a problem for me.
1443904
In Colorado, a bright day, this took with NO power reading all day from 6am-9:30pm for a full 100% charge. At 1pm I turned it to face west. Traveling though, with use on ipads and lights, it seemed to take 2 days of charging. Very good charger and unit, you can always add an extra solar cell if you need to.
1560081
I haven't tried it in full sunlight. I did try leaving it inside my car next to the windshield. Although this is not ideal, after 2 or 3 days, it did not charge much my 10,000 mah battery. It may be better for smaller battery capacities like your iPhone but not super efficient for large battery packs.
1389240
No...It has to be direct sunlight. Also, the solar charger takes a long time to recharge the battery. I basically just used it as a secondary battery and charged it from the wall socket the night before. I think the solar charger would only help if you had several days to charge it. I left it on my dash once for a week and it barely charged half way.
946166
With good sun about 8 hrs for a full charge. I pre-charge mine w/my phone charger before I head out though.
2284640
Hi there - yes to both. If you plug it into a computer it will charge a little faster than if you place it in sunlight. You'll need to give it at least 12 hours of constant charge at first...
1195141
At FULL Charge, mine lasts about 15 to 20 minutes. It takes about an hour for recharging with the USB cable for your computer
541424
i have notice there is no lost in charging time, even if the sun goes behind a cloud. because i leave the panels on top of my backpack when i am hiking...i don't check the status of the charge until i get to resting point, about 3-4 hours later. by the end of the day the charging unit is fully charged.
539497
I've mostly used it on USB, but from time to time it comes unplugged and I dont notice til days later that it's still running. I've never attempted to use it for 80 continuous hours, but I'd say it lives atleast 60 before it needs a charge.
1926834
it works with visible and UV light, so it needs to be in the direct sun to give you currents close to specs. If it's cloudy, it will still work, but not give you much current. In a storage unit it will give you zero.
864812
This device doesn't hold a charge. It simply converts the sun's energy to charge your device when placed in the sun with your device plugged into it. I love this thing.
1963278
It typically lasted 3 to 4 hours if I didn't attach USB devices to it. (I usually use about 85% of full screen brightness.)