Solar is a great alternative.
The 40W Solar Panel from X-Dragon comes with dual-port operation. It comes with a 5V/2Amp USB port as well as an 18V/2Amp DC port.
The dual-port output can power 2 devices at the same
The 5v/2Amp output is for USB devices.
An 18V/2Amp output is for laptops and other devices.
The 40W solar module works with a sophisticated SolarIQ.
It is CE, RoHs, and FCC certified. It operates with surge
protection and short circuit technology. This is to keep our devices safe and
This is a foldable 40W solar panel with a peak output
power of 40 Watts.
They build the module with SUNPOWER solar cells from the
US. The module’s efficiency is as high as 23.3%.
A 40W X-Dragon foldable solar panel.
Carabiners to attach and carry.
Built-in controller with 2 outputs. Also solar IQ to ensure safe and largest operational performance.
Solar panels peak power: 40W.
Transformation efficiency: 22%-25%.
OutPut: USB 5V2.8A /DC18V 1.6A(Max.)
Folded size : 265x160 x70mm
Unfolded size: 680x530x5mm
Net weight: 1157g/40.80oz.
With the 5V USB port we can charge; Smartphones, Tablets, and iPads. Also mini, external battery packs, and other 5V USB devices.
With the 18V DC port we can charge; 18V2A laptops, 12V car battery, and other 18V2A DC-powered devices.
The 40W solar panels come with a built-in controller. It has two output ports. The one is for 5V USB devices and the other is for 18v devices.
With ample sunshine it is possible to charge 2 devices at
the same time.
A built-in chip provides solar IQ to ensure the largest
power delivery. It does it by adjusting current and voltage for max delivery.
A built-in LED indicates whether devices are charging and
Some people complain the module is a bit heavy for carrying when backpacking.
One of the bests around, and brilliant customer service.
It is better to turn off a laptop before charging. That is because some laptops need a large current when operating.
It is best to charge a large battery that is compatible
with this of a laptop.
With larger voltages this product will reduce the voltage
drop. So the large voltage would not damage the smaller devices.
It is a good idea to cover the solar controller, not the solar panels, when in the hot sun. This is because the hot sun can damage the solar controller.
Cover it with a cloth or a towel or something.
The 40W Solar Panel comes with 18 months no worry
warranty. Also, friendly customer service.（Controller
The X-Dragon 40w solar panel is a good combination of power and portability.
Use it and it can keep you going for days.
It comes with a very reasonable price per watt.