Solar Charger 20000mAh, 4.5W Wireless Charger Portable Power Bank External Battery Pack with 3 Solar Panels, Flashlight, Dual 5V/2.1A USB Port, IP65 Rainproof for Camping Hiking Fishing(Orange)

This is a good powerbank that does wireless and wired charging and is a bit heavier than I was expecting. I charged it the first time from the wall and have not tested the solar charging functionality. I would give this product 5 stars except for three minor issues that were enough to knock one star off.The first minor problem is that this comes with a carabiner but the unit doesn't have a slot large enough for it. Rather they attached a flimsier metal loop to the carabiner that does fit into the corner notch. I don't have a lot of confidence that the smaller loop will hold up if I carry around a lot. It would've been better if they made the corner notch larger to accommodate the carabiner.The second minor issue is that the panels are closed into powerbank by way of a velcro strap. While this will hold fine for a while, like the small metal loop with the carabiner, if I use it a lot, I expect the velcro will start losing its stickiness. It would've been better if they used something metal to secure the panels.My final complaint with this powerbank is that there is NO contact information for the manufacturer. Even though the packaging says it wants you to contact them, there is no information in the thin manual or on the box with any contact information. The only form of contact that actually appears to work is the contact information for the seller on the Amazon product page.At the very least I would expect an email address to be printed in the manual or a company URL somewhere on the packaging. Instead if I have any questions or problems with the product, I need to go through Amazon's system.

I am an avid hiker, camper, wilderness backpacker, and an emergency preparedness person who maintains a bug-out bag for "just in case".I've always taken a battery pack with me to multi-day backpacking trips to help keep things charged, and for a few days, the large-capacity packs work well. However, for a 5-day trip with multiple devices (phone, camera, sometimes a GPS, and a fan for really hot days), I would often pack TWO batteries instead. I wanted to lighten the load and find a solar-powered battery and came across this well-reviewed one by NexGadget, a company I have never heard of.PROS- 20,000 mAh battery capacity- Solar charging works, is excruciatingly slow (days/weeks), but with 3 panels, charges faster than my 1-panel one. For emergency use, this is better than nothing- Fairly light weight- Can be charged via microUSB (fastest charging by using a QuickCharge 3.0 wall adapter, which isn't included)- 2 USB output ports (2.1A -- enough to charge an iPad)- Looks very professional- Built-in LED light (various modes)- Qi wireless charging: works with Samsung Galaxy S9+, though I don't recommend it (see CONS)- Waterproof for the outdoors- Loop to hang battery somewhere for charging- Manual comes in multiple languages, and the English and German instructions are well-writtenCONS- Solar charging works but is excruciatingly slow. It takes days or weeks, depending on how much sun you get- Velcro to hold the solar panels folded up can get dirty and eventually also fall off. I would have preferred the closing system to be magnetic or button- Would have liked seeing an extra loop added to the farthest solar panel so you could force it to stay open while attached to a backpack- Qi wireless charging works. However, it is an EXTREMELY inefficient way to charge your device. You should always charge your device via a USB cableTIPS- The first time you use the battery, be sure it's fully charged to help prolong its overall lifetime- Have your battery fully charged before going on a trip. The solar panels, although they will charge, will take a LONG time to fully fill the battery- Each LED light shows how much battery capacity is remaining. Each light represents 25%- When charging the battery via microUSB, the blue LEDs will blink. Green LED indicates solar charging. Red LED indicates Qi wireless charging- Don't charge the battery in a high-temperature environment (ie. inside a non-running car) as that can damage the battery- LED flashlight is turned on by long-pressing the Power button. Quickly tap the Power again to cycle through the different modes- Qi wireless charging won't work if you have a metal plate/cover between the phone and the batteryThe device is rugged and water proof (but you cannot submerge it!), and though it comes with a mini carabiner to attach to the backpack, I take some cords to wrap it on top of my backpack for maximum sun exposure (and charging).Overall, this is a pretty good battery/solar charging combination. It has worked well for my previous, 6-day backpacking trip, but I ended up carrying two batteries anyway (just in case one of them fails.)If you found this review helpful, please hit the "Helpful" button to encourage me to write more. Thank you!

Ibgive this 1 star. This battery is not 20,000 mAh as advertised. I was dubious as it was not delivering, so I bought a mAh tester to see what it really had. It measured only 11,000 mAh, only 1/2 of what they claim, pics attached for verification. I was expecting efficiency of > 66%, so about 13,000 mah. Completely false advertising, don't buy.

This is a big nope. Everything today that's reviewed has good and bad reviews. So I rolled the dice on this one. It came partially charged. This one on the initial charge, charged my device 2 times over from almost 10%. Great, I'll keep it. I was only able to full charge this portable charger 100% once. It took forever. Not Great, in an emergency it will be more than enough for a cell phone.In quick order, even though this charger was fully charged, based on the light indicator, it wouldn't charge my device from 50%, let alone 10%. Still, in an emergency it'll be fine.I set out to charge it, with plans to use it to use it so it doesn't become damaged. Today I needed it. I know it isn't fully charged, but emergency. I pick it up and it felt odd. The front panel is sticking out and the back is bulging. The battery inside is damaged.This was fully charged once.

I have to say I had low expectations for this device! It charges fast via micro-usb. It also charges by solar (green led shows solar charging) . Dual charging ports are convenient for charging 2 devices. This battery pack is perfect for camping or emergency situations where there is no power!I would make some improvements though1. Make the closing strap magnetic2. Add hard hinges to the solar panels to improve durability.3. Make the battery pack replaceable/interchangeable or use standard 18650 cells.