Solar panel folds and is difficult to position. Panel also is very flimsy and I'm concerned about breakage. I battery days ago and have had it in full sun for two days. It has been overcast at times but has not gained a single bit of charge and says the same time remaining as the initial charge. I have it in the same place I have other solar charging devices to be used during storms. The charging cord plug into the device is awkward as well. You have to use a usb connector. I can see this easily being hit and knocked into and breaking. Unless it proves me wrong by tomorrow afternoon, it will most likely be returned. If it won't charge, it isn't worth having.

I purchased this combination power bank and solar panel at the beginning of December and have completed numerous usages to determine a fair review. I have lots of devices that are powered via USB and am constantly trying out different power banks to use with these products. I'm rating this item as two stars due to the fact that the power bank does hold a charge and works well with a variety of devices. It will fast charge your iPhone, Android, and laptops. However, it will only provide your cell phone with one full charge and may have enough left over to give a quarter or if your lucky a half charge more. To charge a laptop, it may give one full charge depending on the model, but will be completely depleted after. If your wanting to just have extra power for your cell phones, there are smaller options at half the price that will charge your phones two and a half times to three times before depletion. And for the same price (though without a solar panel), you can get power banks that will charge your laptops twice and have a small amount of juice left. This power bank has been a big disappointment, especially since it is carried by Sam's Club, which I would have expected to have partnered with a better product (I doubt any testing was done before placing this brand in their stores). Now as for the solar panel, I have several and small panels like the one included, really are a toss up. I have purchased good ones and terrible ones, often there is no in between. Unfortunately, this solar panel is not very good. It will charge the included power bank, but has to be carefully adjusted to gain the optimum angle of sun and due to this, it can't just be placed and returned to later expecting a full charge. Honestly, most solar panels in this size range are going to be the same, needing constant adjustment, however there are a good number out there that provide an even charge with low sunlight levels, but this panel is not in that category. It is nice though to always have a secondary method to charge your power bank for later use, and for my purposes, which is hiking and camping, any power is better than no power. I was excited to see this item at my local Sam's Club and it was discounted, but even at the sale price, I can't recommend when there are so many better options out there at half the price. I can't justify charging this unit all day in the sun to only provide one and a half charges at most. There are power banks more portable in size and weight, and provide more additional charges, which is the whole point of a power bank, I'd also like to point out the units boxed advertising as being misleading, from the size of the box to the images and text. I hope the review is helpful in selecting a power bank and in conclusion this unit is not adequate at the current price for personal use and definitely not as back up for a household to recharge cell phones during outages or camping.

This device works well for small devices such as cell phones and rechargeable batteries. The battery charge hold is decent, but it takes forever to charge in the sun. It may charge better in the spring or summer when the sunlight density is much higher, but in the late fall and winter it will not sufficiently charge even with 8 hours of direct sunlight. I was only able to get between 34 to 52% charge from 8AM-4PM on sunny days with no clouds in mid November.

Watt brick 100 watt portable power station

Takes a long time to charge. Charge doesn't last long.

It works

charges my phone very fast. awesome service from Sams.

This product has been great. After receiving , I have used it everyday since. It has a durable build, great for outdoor use. There are enough charging ports for all my devices and it doesn't overheat (an issue I have had with different products).