- High Efficiency Solar panel
- Universal Charging
- Lightweight
- Compact
- MSRP: $69.00
- www.SecurProducts.com/product-3007ps

What It Is
The Sun Power Bank 4000 by Secue is a solar powered charging station with a standard USB output meaning it can charge your phone but so much more. Before we get to my thoughts on the Sun Power Bank 4000, let's take a look at some hard facts on this little sun powered device shall we?

At its core, the Sun Power Bank 4000 takes energy from the sun during the day and holds that energy in its cells so you can charge your precious smart phone at night. For charging on the trails the entire top is a solar panel, for charging at home or at night there are both a standard and Micro USB input. If you haven't been keeping up on which plug is which, a Micro USB is the same plug all Android phones use, so there is a good chance you already own one.

If you don't, no worries, the standard USB plugs right into your computer and allows you to draw and store energy that way even if the sun isn't a factor. Once charged up (either by the sun or via a wall charger) the Sun Power Bank 4000 has a Micro and standard USB output. This is great if you have a phone with this type of plug; Apple users will need to supply their own proprietary USB charging cable. I don't want to get too much into the technical specs of the solar panel and internal battery. Sure, I could interpret them and put them into everyday language, but I am a mountain biker, not an electrician and besides, if all you are concerned with are the cold hard technical facts of the unit, I'd recommend visiting the manufacturer's site. Well I suppose there may be a few electricians reading MBT so I'll include the specs below. Everyone else, feel free to skip to the next paragraph.

Technical Specs
- High Efficiency Solar Panel
- 5.5V/280mA - 21.5% efficiency
- High Capacity Lithium Battery (3.7volts/4000 mAh)
- Input: Standard USB and Micro USB
- Output: Standard USB and Micro USB
- Charging time via USB input: 4 hours
- Charging time via built-in solar panel: 14 to 18 hours
- Dimensions: 3" x 5" x 0.5"
- Weight: 6 oz

What I Thought
The Sun Power Bank 4000 is a great little device! It offers peace of mind when out on the trail all day. Do you like music on rides? Do you like to carry a phone should you run into an issue on the trail? I don't know about you but I like both. Although for me, these two necessities are bundled together into one handy but power hungry smart phone.

It is beyond comforting knowing that I will never be stuck with a dead cell phone battery while out on a ride so long as the Power Bank is in my pack. There are many devices that offer extra battery power for phones away from home but the solar panel in the Sun Power Bank 4000 assures you that so long as you have access to that yellow orb 93-million miles up there, you'll never run out of juice.

If you paid close attention to the technical specs you noticed that the solar panel takes 14 to 18 hours to charge. Also as a lifelong member of the planet I am sure you have some idea to the fact that the sun does not stay in the sky for quite that long at a time. Even though the math doesn't quite add up, I did not find this to be a problem during testing. With the Sun Power Bank 4000 fully charged I was able to get 4 to 5 complete charges out of it using my iPhone 4S. With normal use my phone lasts about a full day. This means that exposing the Sun Power Bank 4000 to the sun for 4 to 5 hours daily is all I needed to provide enough juice to charge my phone each night without the Sun Power Bank 4000's cells ever running dry. Impressive!

From riding to camping and everything in between, the Sun Power Bank 4000 gives you the charge you need to keep your gadgets alive and stay connected to the outside world if the need arises. $69 gets you near limitless electrical power on tap and perhaps more importantly, it provides something that is generally considered priceless: peace of mind.

Now that I have claimed complete and lifelong cell phone sustainability, let me say this: The weather and the sun are not predictable; even the best solar powered cell phone charger cannot replace the value of proper planning. Use it as a back up or extra battery but don't expect to live off the grid for days or weeks on end with it, especially in areas where the sun simply refuses to shine. Always plan and think ahead.