Doc Giltner and Sunjack Lights

Doc Giltner and Sunjack Lights

22/August 2015

An interesting man, Otis “Doc” Giltner, stopped by the registration desk at BCAA’s Multicultural Program on August 22, 2015 to seek insight and assistance in promoting his idea to provide solar power for light bulbs, cell phones, and other small devices to people in Nepal and Bhutan.

Doc was attending the Multicultural Program because he had read the West Side Leader article, “Bhutanese program to bring citizens together,” in which the statement “After being exiled to refugee camps in Nepal, these individuals lived for 18 years in bamboo huts with no running water or electricity….”

It was the phrase “no running water or electicity” that brought Doc to the program.  He went to the check-in desk and started telling Terry Kuhn about his idea to bring light to people who did not have electicity — like the people in the refugee camps in Nepal.  Terry could not comprehend what Doc was saying and suggested that they have lunch so Doc could more fully explain his ideas.


A week later, Doc had lunch with Terry Kuhn and Dukula Katel, who was born and raised for 14 years in the Beldangi refugee camp in Nepal.  Dr. Kuhn had invited Dukula to the lunch meeting because she had actually lived in the conditions Doc was interested in assisting.  Above you see doc holding two 8000mAh lithium battery packs, each with two 40W LED light bulbs shining in the Pufferbelly Restaurant in Kent, Ohio.

Doc explained his plan to put Sunjacks around the world to provide up to 16 hours of single-bulb light or 8 hours of two-bulb light to people who are currently limited to sunlight for illumination.


These bulbs and a battery pack as shown to the right could supply eight hours of light from two 40W LED light bulbs before the 8000mAh lithium battery pack would need another charge.


Doc seems pleased as he lays the components of the Sunjack on a large rock.  You can see the four folding solar panels, four light bulbs, two lithium battery packs, and switches to turn the light bulbs on and off. 


The additional item in this photo is the iPhone4, which can be charged from the lithium battery pack.
This simple device, cost-free once a kit with one 20W Sunjack portable solar panel, ten 40w LED light bults, and seven 8000mAh lithium batteries is purchased for $495, provide up to 5 hours of light on a charge.  It would also eliminate the need for kerosene lamps and their attendant fumes.  Sunpaks are being used in the Congo, India, Uganda, and Papua New Guinea. 

Dukula is holding the equipment to operate four light bulbs.  This system is portable, light, and it works!  The battery packs store flat inside the case, which also houses the solar panels shown above.

A complete kit that includes one 20W Sunjack portable solar panel, ten 40W LED light bulbs, seven 8000mAh lithium batteries, and packaging material weighs 9.5 pounds.  The system that Dukula is holding with a solar panel, four light bulbs, and two batteries weighs 3 pounds and 5.5 ounces.


The device is marketed under the name “Sunjack.”  Sunjack captures the energy of the sun and stores it in lithium battery packs so they can power cell phones or light bulbs.  It should also be mentioned that solar power systems such as the Sunjack are very inexpensive to operate and are more environmentally friendly than other sources of electrical power.  And, there are no obnoxious fumes such as those generated by kerosene lamps.
Doc can be contacted at

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