K2 Solar Laptop Powerbank in use

185 Wh battery and up to 76 watts of peak photovoltaic mean large reserves in use. Together with economical laptops would be a life without electricity network possible.



K2 Solar Laptop Powerbank in use
185 Wh battery and up to 76 watts of peak photovoltaic mean large reserves in use. Together with economical laptops would be a life without electricity network possible.

Here the K2 Solar in use at a place where I already reported 5 years ago from a previous laptop power supply . In the background the foldable photovoltaics, which I got 2005 from Unisolar .

K2 Solar Laptop Powerbank in use
185 Wh battery and up to 76 watts of peak photovoltaic mean large reserves in use. Together with economical laptops would be a life without electricity network possible.
Picture 1

Left to right:
  • Input for power supply or up to 76 watts of peak photovoltaic
  • 4 LEDs that indicate the charge state and charge. If the LED flashes farthest to the right, then it is being charged.
  • Power On. The USB 5 V, 12 V and 20 V outputs require a conversion of the battery voltage. A steady readiness would thus consume electricity. If the power button is pressed, all outputs are checked to see if a load is connected. As soon as the current consumption at an output becomes very small, this output is switched off again.
  • 20 V 3 output for notebooks.
  • 12 V 2.5 A output. Netbooks and some economical notebooks need 12 V.
  • 4 USB outputs, 2 with 2.1 A, 2 with 1 A.
The power requirement of laptops are completely different. This starts at 4 watts and stops at 400 watts. Beyond the 60 watts, which supplies the K2 Solar, are actually only Gaminig laptops.

Currently I have in the family 4 pcs Acer ES1-331 series laptops with N3150, N3710, N3050 CPU. They all have 6 watts TDP (thermal design power). Even with a brightly lit display, the power requirement is typically less than 10 watts. To the K2 Solar one could connect all 4 laptops at a time. A maximum of 76 watts of photovoltaic for the K2 Solar would also generally supply more power than the 4 laptops consume.

For this one would only have to make a corresponding distributor. The laptops should also be fully charged, because when charging the internal battery, the power consumption increases to over 30 watts.

  K2 Solar has big reserves


Let's assume a 76 watt peak photovoltaic and all 4 economical notebooks of my family would be connected to the K2 Solar and it would be a medium cloudy day. Photovoltaic supplies only 20 watts on average, the 4 notebooks need 32 watts. The battery must deliver 12 watts. After 10 hours only 2/3 of the 185 Wh battery would be consumed.

There are still 2 billion people who live without grid connected electricity. A K2 solar with a 76 watt photovoltaic could supply the electricity for light, communication and education for a family in a sunny developing country. About 8000 hours of using economical notebooks with 6 watts, 3000 times recharging a smartphone and 2000 hours of 10 watts for LED lighting.



  K2 Solar Laptop Power Bank


Whether an expedition to an area without power supply or just leisurely at the beach with the notebook work, K2 Solar Is the solution.

Scope of delivery K2 Solar laptop Power Bank Scope of delivery K2 Solar laptop Power Bank
A pocket, power supply, cable for photovoltaic and 10 different adapters for laptops are at the K2 Solar.


Measure a 12 V solar equipment Measure a 12 V solar equipment
The 4 LEDs on the K2 Solar are sufficient for the consumer. For a test report one would like however significantly more information about the device.




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