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  • Solio Bolt Battery Pack + Solar Charger
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Solio Bolt Battery Pack + Solar Charger

by Solio
| 5 answered questions

List Price: $70.00
Price: $37.49 & FREE Shipping. Details
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  • Battery pack and solar charger keeps electronic devices fully charged via on-board battery and rotating solar panels; charges thousands of popular USB powered gadgets
  • Accepts charge from the sun via two high-efficiency solar panels, micro-USB power in-port, or wall outlet with optional adapter (sold separately), and holds charge for up to a year
  • Multi-function LED light indicates battery level and charging status , and one full BOLT charge will give most smartphones two (or more) complete charges
  • Four-hour, 30-minute charge time via USB port/wall charger, eight-to-ten-hour charge time via sun, and three-year average battery life; measures 3.5 by one by 3.5 inches (W x H x D) and weighs 5.3 ounces
  • Comes with Solio Bolt solar charger, USB charge-in cable, Micro-USB charge-out cable, pencil, and Quick Start Guide
  • Anything - Simply connect to the Bolt using your device's own USB charging cable, no need for extra tips or unneeded cables.
  • Anytime - Holds charge for up to a year in it's 2000mAh rechargeable/replaceable battery. The Bolt will give most Smartphones two complete charges.
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10 new from $37.49 6 used from $25.00

Frequently Bought Together

Solio Bolt Battery Pack + Solar Charger + Magnesium Fire Starter
Price for both: $42.97

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Product Description


The Solio BOLT battery pack and solar charger is an ideal on-the-go companion, keeping you online and in-touch by keeping your electronic devices fully charged. With an on-board battery and rotating solar panels, the device charges thousands of popular USB powered gadgets, including smartphones, MP3 players, e-readers, cameras, and more. Simply connect the the BOLT using your device’s own charging cable. The BOLT accepts a charge from the sun via two high-efficiency solar panels, a micro-USB power in-port, or a wall outlet with optional adapter (sold separately), and holds a charge for up to a year. A multi-function LED light indicates battery level and charging status , and one full BOLT charge will give most smartphones two (or more) complete charges.
Lights Smartphones Cameras GPS E-Readers USB Cell Batteries
Simple, fast charging
The 1Amp output of the BOLT charges target devices at the same rate as a typical wall charger. On average, a smartphone goes from zero to full in just under three hours.
Sundial for energy capture
The innovative design of the BOLT allows a simple pencil (included) to be inserted into the center, which makes the BOLT act like a sundial. Simply point the BOLT towards the sun and rotate it until the pencil no longer casts a shadow. A full day in direct sunlight completely charges the BOLT’s on-board 2000mAh Li-Poly battery.
One-button operation
The BOLT has a single LED push button. When it's capturing energy from the sun or USB, the button lights up red. Push the button one time and the BOLT flashes one to five times to indicate battery level, then begins energy output. Push the button one more time to turn the power off.
Charging efficiency
While electronics are changing all the time, there are two standard charging specs that devices adhere to -- a CTIA standard charge output, which most devices follow, and an Apple charge output which Apple products follow. The BOLT is designed to switch modes, allowing for the most efficient charging of all devices, regardless of which charging mode they require. When the BOLT’s LED button is green, this indicates it is in CTIA charging output mode. To switch modes, simply hold down the button for five seconds and release. The button will then light up blue, indicating it is now in a mode optimized for Apple products like the iPad, iPhone, and iPod.
Heat and chemistry
A high temperature-rated Li-Poly battery is unlike other battery chemistries, working in high-heat with a 60C specification which means the heat of the sun never interrupts efficient solar charging. When the useful life of the rechargeable battery is over, the BOLT’s battery is easily user-replaceable.
Charge when the sun goes down
The BOLT’s battery can be re-charged via the micro-USB port using the included USB charging cable. From USB, the BOLT’s battery charges to full capacity in 4.5 hours.
Compact for travel
When the BOLT is not spun open to capture energy from the sun, it folds closed into a compact package that fits in the palm of your hand. At only 5.3 ounces, it stows easily, providing battery back-up for USB powered electronics while on-the-go.


  • Five-watt maximum wattage
  • Fixed 5V, 1,000mAh discharge rate
  • 5-5.5V 450mAh charge rate
  • Four-hour, 30-minute charge time via USB port/wall charger
  • Eight-to-ten-hour charge time via sun
  • Three-year average battery life
  • 3.7V/2,000mAh Li-Poly battery
  • Measures 3.5 by one by 3.5 inches (W x H x D)
  • 5.3-ounce weight

What's in the box?

  • Solio Bolt solar charger
  • USB charge-in cable
  • Micro-USB charge-out cable
  • Pencil
  • Quick Start Guide

About Solio
Solio is the brand name of Better Energy Systems Inc, a private company based in Oakland, California with teams in the United Kingdom and Kenya. The company was founded in 2002 to design, develop, and market power products for handheld electronics. The company's stated mission is to "bring clean, renewable energy into the daily lives of people throughout the world, making better energy a way of life for everyone," which it seeks to accomplish by:

  • Providing energy equality, the belief that all people -- regardless of geography or economic standing -- are entitled to clean energy and light
  • Engaging in the fight against poverty by implementing new ways to bring sustainable power and light to people at the base of the economic pyramid
  • Making renewable energy innovations widely and affordably available, in order to enable a global shift toward new energy infrastructure

Product Description

With an on-board battery and rotating solar panels, the Solio BOLT charges popular USB powered gadgets from smartphone and MP3 players, to e-readers, GPS, and cameras
  • Includes Micro-USB to USB Cable for charging via USB port / USB port wall adapter, can also be used as a charging cord for any Micro-USB devices
  • Charge Time: Via USB port/wall charger is 4.5 hours, Via Solar 8 - 10 hours
  • Battery: 3.7V/2,000mAh Li-Poly - User replaceable at end of life (average 3 years)
  • Pencil - Insert the pencil through the center of the BOLT to easily prop towards the sun
  • Max Wattage: 5 Watts
  • Discharge Rate: Fixed 5V, 1,000mAh
  • Charge Rate: 5-5.5V 450mAh
  • Weight: 5.3oz
  • Dimensions: 3.5 x 3.5 x 1"
Item Specifications
Unit of SaleEach

Product Details

  • Product Dimensions: 3.5 x 3.5 x 1 inches ; 5.3 ounces
  • Shipping Weight: 7.2 ounces (View shipping rates and policies)
  • Shipping: This item can only be shipped to the 48 contiguous states. We regret it cannot be shipped to APO/FPO, Hawaii, Alaska, or Puerto Rico.
  • ASIN: B005AEQ43I
  • Item model number: S620-AH1RW
  • Average Customer Review: 3.6 out of 5 stars  See all reviews (62 customer reviews)
  • Amazon Best Sellers Rank: #34,332 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
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Customer Questions & Answers

Customer Reviews

Well designed product and quality of product seems to be very good.
I think the issue was that as the Bolt bounced around on the top of my head the button kept getting pressed.
For my use it would take two sunny days to get the Bolt fully charged.

Most Helpful Customer Reviews

97 of 98 people found the following review helpful By David on November 15, 2011
I bought a Solio Bolt when they were first released as a backup external battery for my HTC Desire smartphone. My well-used phone struggles to get through a busy day on a single charge, and I was keen to have an emergency power source for when I was travelling. The ability to use it to charge any USB-rechargeable gadget (eg. my kids iPods) without the need for various adaptors made it a very attractive option.

The Solio site claims "The Bolt will give most smartphones two + complete charges!" Well, I don't know about most smartphones, but mine has a 1400mAh battery, so expecting two complete charges from the Bolt's 2000mAh battery was always going to seem a little, um, heroic. A fully charged Bolt actually recharges my 1400mAh battery to about 90% of its capacity (taking about 2 hours to do so, before the Bolt runs dry). That loss of efficiency is probably to be expected, and may actually be pretty good compared to other devices, but it does mean the Bolt falls somewhat short of what the marketing bumpf might lead you to believe.

Similarly, my real-world experience of the charging times are a little longer than the advertised specs. From a usb cable plugged into a wall charger, about 7.8 hours rather than 4.5 (in Australia and France). From the solar panels, closer to 15-20 hours rather than 10-12, but probably because in the real world you are not constantly monitoring it to optimise its angle to the sun, or you have left it to charge through glass on a window sill, etc. Which still impresses me, but it is a pity the competition for customers means that manufacturers of these sort of devices can't risk advertising more realistic real-world specs.

Finally, watch out for the Bolt's multi-function LED button.
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30 of 30 people found the following review helpful By Steve on November 18, 2011
I've had my Solio Bolt for over a month now and it works great with both my iPhone 4 and iPad 2. I'll admit that I'm not diligent enough in adjusting my Bolt when charging via the sun to adjust it regularly but it charges close to full while I'm out backpacking and camping. I'm guessing that if I were to adjust it more regularly I'd get even better results. The Bolt routinely recharges my iPhone which I rely quite a bit while I'm out for the day. It's great to be able to come back and recharge my phone overnight and be ready to go in the morning.
I can also use the Bolt to provide a boost to my iPad 2. Clearly the 2000mAh battery isn't large enough to fully recharge the iPad but I can watch movies and not be concerned with running out of power while backpacking and camping.
The built in USB port means that if I get any new devices (I just have the two Apple products at the moment) I just need a USB cable and I'm all set.
I'd recommend this to anyone going camping or needing a battery backup in case of emergency.
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35 of 37 people found the following review helpful By Mountain Hiker on November 30, 2011
Verified Purchase
Purpose: Wanted to be able to charge my iPhone 4S on the backcountry. I use it for maps/gps/phone/camera/light. Using just a phone decreases my overall weight, but battery life is a problem. Previously I had brought a single spare battery, but could only use my phone for key things (and had to carry separate maps/light/camera).

Context: Initial 2 days of use only around house. Have compared to the GoalZero Adventure Kit (which was too heavy and not iPhone 4S friendly). Plan to review the Solarmio Pro from REI (lighter than the GoalZero Kit). I've looked online a fair amount already, and want something for a long hike.

- 5oz, one of the lightest I've seen
- charges iPhone 4S and 3GS without issue. Holds about a single full charge in the battery (I'll update this review if I get any more out of it). I tested a 3 light/60% Bolt charge, which transfered to about a 60% iPhone boost.
- Very compact

- Single hole located in center will require a little work to get it to sit upright correctly on my pack while hiking.
- Does not charge fast even given full sun (that's what you get for a small unit!)

Overall, very pleased so far. Will see how it goes in the backcountry for a prolonged hike. I'm not going to bet my life on this (e.g. I'll basically know where I'm going if I'm not carrying maps). However, for the light-weight hiker who uses an iPhone, this might be the best one out there.
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15 of 15 people found the following review helpful By Jason B. on December 12, 2011
I bought the Solio Bolt mainly as a way to recharge my iPhone when travelling. Generally, if travelling by car, I have a car charger handy, but by air, it can sometimes be difficult to charge the phone, or it causes you to be tied to a certain location. I also wanted an option in case of a power outage, which is an unlikely event, but did happen a few years ago for 3 days. Having one of these would have allowed us to keep our phones charged.

As others have stated, the charging capacity is a little overhyped. I was down to about 50% on my iPhone 4S when I decided to charge it from a fully charged Bolt, and after it reached 100%, I turned the Bolt off, and then checked it's level, and it indicated 40%. This indicates to me, that it could possibly fully charge my iPhone to 90-100%, once, from a dead phone. This is fine for me, I didn't want something huge and bulky, basically just something to give the phone a boost to get me through a day. I will generally always have a power adapter to plug into the wall to charge the phone overnight, so that's not a concern.

I also have a few quirks about the design, and they primarily pertain to the power button. I recharged the Bolt from a wall adapter USB socket, until fully charged. At this time, I tried to check the level of the battery, by pressing the button. No matter what I did, I could not get the button to operate at all. I tried pushing it, holding it down, nothing. After thinking I was going to have to return it (which would be a headache, as I bought it on a trip to California), I realized that I had to slightly push the button (which doubles as the LED indicator--it's a light pipe, basically) towards the side of the housing, then push down on it.
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