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Window Solar Charger


This easy-to-install, stylish solar panel charges your devices with the power of the sun

As Seen on Shark Tank.

  • Built-in Rechargeable Battery - Our solar charger stores energy so you can charge your devices day or night. 
  • Power Your Personal Devices - The built in USB port can charge iPhones, Android phones, smart watches, AirPods, bike lights, speakers & more. 
  • No Fuss Installation - Includes a suction cup hook that attaches to any window.
  • Educational - Our solar panel is encased in perfectly transparent, durable plastic so you can see the solar tech inside. 
  • Responsible Design - This product is designed to be repairable. Never ever throw it away! We will gladly take it back and replace parts. 


  • 10W solar panel 
  • 3,400 mAh battery 
  • 1 USB-A port, adapter needed for USB-C devices
  • Approximately 10 hrs of direct sun to fully charge built-in battery
  • Product dimensions are about 13” x 10” x 1.25"



Customer Reviews
5.0 Based on 2 Reviews
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Filter Reviews:
Anthony W.
United States United States

Beautiful panel & super easy to set up - just find a place to hang it and voila. I have mine hanging in my office window, always ready to charge my phone (especially on marathon call days). It’s a charming step toward a more sustainable energy future, and quite convenient to boot. Grouphug is a wonderful company with a wonderful mission. This product is awesome and I can’t wait to see what they come up with in the future.

Tom O.
United States United States
We Love Our Grouphug Window Solar Charger!

What a great product! We supported the Grouphug Kickstarter, and were impressed to follow along, week by week, as Krystal and her team iterated on the charger and navigated the massive disruptions to their roll-out plans caused by the pandemic. We were delighted when our window solar charger reached us early in the summer, and after a minor hiccup – ours was one of a few chargers in the first batch that had a small technical glitch, which Krystal and company studied, figured out, and fixed – we have been using it steadily since. As renters in NYC (who use community solar, but are not in a position to put panels on our building's roof), it feels great to have the charger hanging in our bedroom window, and on sunny days, I find the charge it builds up is often enough to recharge my phone – very nice to have these two essential devices tethered, and, thinking back to Hurricane Sandy, a relief to have at least a little power generation capacity on-site now in our apartment. Plus the charger just looks nice, and is a very welcome addition to our home :)