NorPac Sports Solar Charger Dual-USB and Dual-Powered Performance Power Bank 5000mAh Multi-Tool Water-Resistant Shockproof and Dustproof – Never Worry About Battery Life Again

Works Great. Comes charged and ready. Same size as a phone. Fit on Golf/Beach or Pool bag. I have purchased two of these AMAZING LITTLE gadgets!!!

Works great. This little device was purchased for a 12 day hike coming up in New Mexico. Been using it to test it out and it works great. And the bonus of having the flashlight is cool too.

Summary: a compact USB battery, around 2600mAh @ 5V. Charges quickly because the capacity is low. Charging output averages around 1.1A per port when using both - but that will only half fill two different devices. It won’t quite fully charge my Galaxy S4 once when that is the only thing connected.Weight: 4.7 oz.Dimensions: 3” wide x 5 3/4” long x 5/8” highPeak Input (to Battery) Charge Speed: 1.1-1.2AInput (Charge) Capacity: 3200mAh @5VCharge Time from full discharge: 2-3hrs.Peak Output (to Phone/ Device) Discharge Speed: 1.2-1.4A on either port, average was slightly higher on the side next to the charging port. Dropped off by .1-.2A per port when using both at once.Output (Discharge) Capacity: 1950mAh @5VThis listing states 5000 mAh, with no voltage - presumably it is 3.7V, standard for lithium-ion batteries. USB voltage is 5V, which is what I can measure at the input / output. So converted to the power output you can actually get at the USB port, that is 5000*3.7V/5V = 3700 mAh @ 5V. The actual performance of the battery was 50% lower than that, at [email protected] pack has two ports with no labels. I found only a very small difference between them - 1.2-1.4A average, slight higher on the side next to the charging port. Both were at 4.85-4.9V. That was on devices that could easily pull 2.1A. So a little better than the actual claims of 1A per port, and it stayed just over 1A each when both were in use, for a total around 2.2A.The pack has four LED indicators, to show full to empty in 25% increments. They are reasonable close to linear with the charge.In real world use, I charged my Galaxy S4 from 7% to 97% on this, starting with the battery fully charged, and ending almost empty. I then emptied it charging another device with the power meter in line, and there was only 130mAh@5V left, about 5%. So it would not have been able to take my 2 year old phone from 0-100% once. The phone was not in use while charging.To test capacity, I fully discharged it until it shut off and would not turn back on. Then I fully charged it twice, and fully discharged it twice, with those 4 cycles all through my USB Power Meter, each time recording the full mAh readings at charged and discharged.Full Charge 1: 3366 mAh @ 5VFull Discharge 1: 1950 mAh @ 5VFull Charge 2: 3134 mAh @ 5VFull Discharge 2: 1930 mAh @ 5VThere are inefficiencies in charging and discharging, so the actual capacity is somewhere in between those numbers. 2600mAh @ 5V would be a reasonable midpoint estimate. So the pack is actually has significantly less than the stated capacity @ 3.7V in my testing.Charging is medium speed, around 1.1A @ 5.15V from the charger (which can supply upwards of 2A to capable devices). Fortunately, it doesn’t take long to charge because the capacity is so low.Charging with the solar panel works, but is exceptionally slow. As they say in the fine print - that is for emergencies, as it can take up to 40 hours. I haven’t had the patience to wait it out yet.Overall, this is a small, light battery, with a small capacity. It just doesn’t provide the amount of power it claims. The solar features might come in handy some day, but are mostly a gimmick. I don’t dislike it - it will charge my phone, and it does have a solar panel onboard, but can’t really recommend this charger, you aren’t getting what the listing claims.The product was provided to me at a discount in exchange for a review. The review is my own.

Straight out of the box it was so easy to use. Normally my phone dies in half a day and I have no where to charge it. So I decided to pick one of these bad boys up and it has saved my phone battery life so many times. It's super light so u can take it everywhere and when I go to school I never have to worry about my phone dying ever again! 10/10 best charger

Awesome product! Really cool and innovative piece of technology that I can take anywhere, it's perfect. I went camping and the solar power charger really came in handy. I was very impressed all around. I carry it everywhere with me because it fits in my pocket perfectly and I can use it on the go. I would ABSOLUTELY recommend this product to anyone!

This is a great portable solar battery charger. A full charge of this battery gave me over 2 full charges in my iPhone 6. The solar panel charges as soon as it's put into the sun, and even gets charged under certain light bulbs. Only downside is how long the battery takes to charge using only sunlight, but overall a great portable battery. I received this product at a discount for my honest review and in no way biased my opinion of it.

Great product! The fact that it charges automatically whenever in direct sunlight is really cool. It is pocket sized and light; thus it is very easy to carry around wherever you go. I really recommend purchasing it.

Awesome charger! I use this when I go camping, hiking and boating and it always keeps my phone nice and charged so I can use it whenever I want. Great function and price