Hiluckey Solar Charger 25000mAh, Outdoor USB C Portable Power Bank with 4 Solar Panels, 3A Fast Charge External Battery Pack with 3 USB Outputs Compatible with Smartphones, Tablets, etc.

I am a member of a Federal Disaster Response team and as such may find myself deployed to areas that have had power knocked out. I carry high capacity power packs but of course you need power to recharge those. This item was purchased for its solar charging capability.This is a much bigger and heavier unit than I expected, so it's not something I will carry in a pocket, but based on my testing I will carry it in my go bag. The attached pictures can give you an idea of the dimensions.To test the performance I fully charged the unit using a wall plug and then used it to charge my Samsung Galaxy S-7 until the power pack was fully drained. The nutshell report is that I got about 5 full recharges before the power pack was drained.1st - phone from 7% to full in 1 hr 40 min2nd - from 3% to full in in 1 hr 46 min3rd - from 0% to full in 1 hr 45 min4th - from 1% to full in 1 hr 54 min while using the phone to surf the web5th - 0% to 45% in 42 minutes at which point the pack was drained.I then took the depleted pack outside and opened the solar panels to indirect sunlight and connected my depleted phone to it. That took my phone from 0% to 6% in one hour.I moved the pack into direct sunlight and the phone went from 6% to 13% in one hour.I then disconnected the phone and left the pack in direct sunlight for an additional 6 hrs and noted that the pack was displaying 1 light of charge capacity, (about 25%). Clearly, charging the pack by solar power alone will take several days to go from empty to full. However, since in the course of a normal work day my phone rarely falls below 50%, I feel comfortable that this unit will give me 9 to 10 recharges before running out of juice. If I set the unit into sunlight during the day and charge my phone in the evening, I imagine that I'll never be without power.The caveat...if deployed to a disaster, most of my phone use is accessing disaster related apps a few times per day, using GPS with pre-downloaded maps, and if lucky, phone or text with family and teammates. I might listen to stored music during downtime, but not streaming anything.My bottom line is that this item will go out the door with me, maybe as soon as this weekend with Hurricane Dorian on the way. I would recommend it to anyone looking for an emergency power pack. It's way too bulky for a day-to-day carry power source, but if you are expecting or planning to be completely without any electrical power for more than a couple of days, then this may be the way to go.

Charges great, recharges well, and survived a fall from a truck roof onto rocks! Would highly recommend!

Got mine today. It looks good. There is no hook to hang on a backpack so some of the pictures are misleading, but the snap is on a loop so the loop can be used with some type of hook to hang it. It's not in the center, it's by a corner, so it won't hang straight down as if the loop were centered.I put it in the sun and the lights show the correct indications of it charging. All of the led lights are fine, there are 4 blue and 1 green. It can take up to 50 hours to charge by sunlight, so six 8 hour days plus 2 more hours. Using that info, I figured that 25000 mah (this power bank's capacity)/50 hrs = 500 mah per hour recharge by sunshine. So 8 hours of sunshine = 4000 mah, enough to fully charge my phone from 0 to 100%. And it should recharge my phone 7+ times, from 0 to 100%, on a full battery. Have not tested this in any way, just using the numbers given on this page.Most of the negative reviews are because of slow solar charging. Those people did not do their research before buying and did not have realistic expectations. Small solar panels like these are slow to recharge the power bank. That's normal. All small, portable power banks will have this issue. This solar power bank has four solar panels, so it will recharge four times faster than a power bank with just one solar panel. It will take longer or shorter depending on the capacity of the power bank, larger capacity takes longer to fill. Charging through glass greatly reduces efficiency, slowing the process further.Find out the capacity of your phone, tablet, and other devices you want to use with this power bank to decide if it will work for you (I had to look the information up online). Maybe you need to buy a couple of them. That might be a better choice than buying a higher capacity power bank because it will give you double the solar panels, so double the recharging speed. Say you have a partner and you want to be able to recharge both your phones. This power bank will charge both your phones a few times, BUT recharging it with the sun will be one phone's mAh per day. So, if you buy two of these solar power banks, you can set BOTH in the sun for the same 8 hours, getting double the benefit: two phones' worth of charge in the same 8 hours.The purpose for getting the solar power bank is so that when there is no electricity to plug your phone into, and no electricity to plug the power bank into, there is another way to capture the desired energy. It's slow, but it works in a circumstance when you would otherwise have no way to recharge. I got mine for after hurricanes when the power might be out for a week or more.I also see reviews complaining that the power bank stops working after a while. Other power banks have the same complaint, so it's not specific to this one. I read up on why power banks might fail, and reread the owner's manual. I wrote a maintenance list for myself, and put it with the power bank. I set myself reminders on my calendar to recharge it every other month. If followed, there should be no problems, based what I've read. This is not from experience. Yet.1. Unplug cables when not in use.2. Do not leave outside overnight.3. Do not leave in hot car.4. Recharge at least every 3 months.5. Do not allow full discharge.6. Temperature range: 32 deg. to 113 deg.7. Do not get very wet.8. Do not drop.9. Do not scratch solar panels.It came partially charged. It says to fully charge before use and every three months to maintain battery life. It also says not to leave in the hot car because the heat can damage it. Also, it's not fully waterproof, it's water resistant. Don't drop it in a bucket of water.The added flashlight is a great bonus. But the charger can't be set up to shine anywhere, you'd have to prop it up with other stuff. Good for when you're holding it in your hand., not so good for setting on a table.I plugged the power bank in and fully charged it, then I used it with my regular phone charging cable to charge my phone. My phone battery was on 88%. It charged to 100% within 20 minutes, which is the same speed as every day when I recharge it. It's also working fine charging my tablet.In the future, if I have problems, I will come back and post them here.

It’s exactly what I expected!

I have owned several of these, and what I like most about this solar charger is: 6 x 3.5 x 1.5 size at 1 lb is easy to carry, 4 panels produce 24k mAh, short circut and over charging protection, ability to charge 3 items at once using USB - C (both in and out) and 2 USB- A (out only), via high-speed LiPo battery that can charge fully in just over an hour.