Solar Panel USB Charger

Product Description

Features

• Compact, lightweight solar roll with integrated high capacity li-ion battery
• Solar charging and power storage charging your devices when you're off the grid
• 2200mAh Li-Ion battery on-board to charge your smartphone, MP3 player, e-reader or action camera
• Battery charges from a USB power source in 4-hours or 10-hours from the sun
• Single USB output compatible with nearly any USB powered rechargeable device, Micro-USB input for pre-charging with included USB/Micro-USB cord

Top Reviews

I love this! On the downside
by busybee (4 out of 5 stars)
August 21, 2014

I love this! On the downside, I have not been able to recharge it adequately from the sun, and some of the products (like my camera) don't seem to work with it. On the upside, I use it to recharge my garmen gps watch on multi day backpacking trips, and there is a sense of security in knowing that I have a way to recharge my cell phone if there is an emergency. It is light enough to be included in my pack. I just make sure that it is fully charged before I leave home. Then I open it up to allow the sun to recharge it whenever it is convenient on the trail. I recommend trying it at home first so you know how it works with your equipment. Once it is discharged completely, it takes a long time to recharge from the sun (if you can at all). But when I use it sparingly on the trail, it provides me an electrical source and I can prolong its life by using the solar function.
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Good Weight to functionality & value for Backpacking
by Colorado Hiker (4 out of 5 stars)
June 6, 2014

Bottom line: I am happy with my purchase of this; on Amazon at $35, specifically for backpacking use. I would not recommend this for bug-out or long term use and I would not recommend it at a $50 price point.

It weighs 4oz including a short usb cable and modifications I made to attach it to my backpack.

A spare cell phone battery weighs about 1.5 oz (Samsung). On multi-day/week hikes, this charger gives me piece of mind, over carrying multiple spare batteries knowing that I can use my phone more, and always have emergency power.

USB Battery Charge: Bushnell lists the battery as 2200 mAh. My cell phone is exactly 2200 mAh, however repeated charges with my phone turned off bring my phone up 91-92%. That is acceptable, but not as advertised.

Solar Battery Charge: As other reviewers have commented, solar charging is poor and confusing due to a lack of progress LEDs. The following results are based on Colorado sun: < 30 degree angle to perpendicular, over repeated tests. Backpacking results are significantly worse due to poor sun angle and trees, but I have no easy way to document and report back those experiences.
6 hours sun = 45% built-in battery charge (calculated based on my phone charge %)
14 hours sun (over two days) = 85% battery charge.

Like others reported, I have yet to get the light to go green using the sun.

Conclusion. I bought this charger on sale specifically for week long backing trips. I am happy with it. This charger will keep my phone minimally charged at less than half the weight of the next size up similar charger.
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Battery capacity too small and solar charging does not work.
by D. R. Martz (1 out of 5 stars)
August 5, 2019

Those who understand electronics will not the capacity is sufficient for roughly 2/3 of a charge of a cell phone (that is turned off or power saving). With a phone running 'normally' you won't get even half the charge because power is draining simultaneously. A bigger problem is that the battery does NOT charge in sunlight. I put mine in outdoor sunlight for roughly 40 hours and the device did not deliver even a trickle to my smart watch or phone! Perhaps this was just a flaw in the one I received, but as noted elsewhere the cost to ship / replace a lithium battery, plus the risk of getting another bad one makes the product not worth the bother. Zero stars!
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Revised Review: Died on my 2nd backpacking trip this year
by EliF (1 out of 5 stars)
March 20, 2014

The solar charger died in the middle of a 5 day backpacking trip. It worked just fine for one trip a few months ago. It looks like the build quality is sub par. I would not recommend this charger to anyone.
****Former Review Below****

I bought this to use for backpacking. I only need to charge my phone every couple days when I keep it on airplane mode. I use it for gps and maybe some reading or music. I weighed it without the end caps, and it came out to 3.4 ounces. The end caps only add an ounce or so.

I measured the output to about 1400mAh by keeping track of how much percentage of the battery was actually charged on my tablet. That's not even close to the 2200mAh that is listed, but it's good enough for my use. It takes 2 days of near full sunlight to fully charge.
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I love this product
by Elizabeth Zingg (5 out of 5 stars)
June 5, 2015

I love this product! It's lightweight, and charges well. The only downside is that it doesn't charge at all in shade, which is expected since it's solar powered I guess. What I really love is that it doesn't need total sunlight, it does continue to charge in partial sunlight. It also, to my most frequent delight, charges in full cloud cover. Maybe not dark clouds, but a sky of clouds does not hinder this baby. It charges my phone like any other charger, but the charger itself doesn't take too long to get a full charge stored. I'll be taking this backpacking with me.
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Works great for me
by Inga's Adventures (5 out of 5 stars)
February 10, 2015

I've had my Mini for a couple of years and have used it a lot backpacking, last summer for three weeks on the John Muir Trail. It works as advertised. I charge it up at home before I leave and I get one full charge on my Android phone. That's usually all I need for up to 4-5 days. For longer stretches I leave it lashed to my pack and it takes about two days to fully charge up from the sun--that's a reasonable amount of time considering they say it should take 10 hours. It's not always facing the sun so 2 hiker-days is ok with me. I hear complaints from others--maybe I just got lucky with a reliable unit, but I've been more than satisfied and for 3 oz I can't complain about the weight.
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My home use/testing experience - waiting for a backpacking experience
by J B. (4 out of 5 stars)
January 21, 2015

Very pleased with overall capacity. Charged on my computer first (3 hours or so) and it charged my iphone from 10 to 100% pretty rapidly. After discharging, I could again charge from about 10% to 40%, when the charging light went out. Then I left out in the sun all day, initially fully discharged. The charging light glows red (in computer or sunlight) when charging and turns to green when full. It charged to green in full sunlight (although laying flat, so not always perpendicular to the sun) in about 9 hours (literature says 10 hours). However, it only charged my phone about 20% when inserted and stopped at the time I made a phone call. I plugged it into the computer and it took about two hours to say it was fully charged again. After discharging the charger, I took it out in the sunlight (red charging light displayed) and plugged it into my phone while playing music. The charging could not keep up with the phone discharging, so I figure this would not allow me to hike all day and listen to music and effectively keep the battery at the same charge level. In fact, when charger is discharged, it keeps cutting in and out (you can hear in phone speakers) and may even be partially draining the phone battery. Therefore, I would never again plug it into my phone unless it had at least a half charge (if using the iphone simultaneously). Although I will do some further testing, I will be taking a big backpacking trip later this year and may update review with a week long experience on the trail. I am also taking a second non-solar power pack, good for one full phone recharge as a backup.
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Decent power storage device, but stinks as a solar charger.
by JB (2 out of 5 stars)
November 9, 2013

This item works pretty well as a light-weight power storage device if you pre-charge it before you leave the house. On a full charge I was able to charge an iPhone 5 from 50% battery plus an Amazon Kindle Paperwhite from about 75% with a bit left over for other devices.

The solar charging, on the other hand, is lackluster at best. To even start to charge it needs full, direct exposure to the sun. Forget about hooking it to your backpack while hiking and getting much of a charge...it's not gonna happen. Even leaving it in direct sun for 4-5 hours only charged it enough to bump my iPhone 5 by 12-13%.

Overall, this item is cheap and works ok for power storage, but I wouldn't rely on the solar charging.
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Good for the Apocolypse
by Kristaulf (5 out of 5 stars)
January 25, 2015

Got this in case of the god for saken apocalypse. And wouldn't ya know it, walking to starbucks a couple block away my phone dies. I though my whole world was coming to an end. First my phone, what else could possibly happen? I felt like I was lost back in the stone ages and suddenly satellites would start falling from the sky as fireballs. But then good ol' Bear Gryll's showed up in a mirage of hope and disrepair, he reaching out and gave me this. I plugged it into my phone, and then my phone came back to life! Suddenly the sky become blue again and I felt like I could make the rest of the journey to plug in my mac-book air with all of the other coffee drinking hipsters
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the smart phone seems to charge much slower
by Vapin'Guy (5 out of 5 stars)
September 30, 2015

Several months I've used this and it works well. I use it mainly to charge my nicotine vaporizer, mp3 player and sometimes smartphone when it's own battery has been fully charged through USB. It charges those devices fast and the amount it charges varies from different devices off of it own battery charge. While the battery of the solarwrap is dead and using the solar panel; the mp3 will play from a dead battery and the vape will vape, the smart phone seems to charge much slower. Very compact, looks good. I would suggest trying to buy it from around $50 or less if you can, otherwise I think it would be too expensive.

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