21st-Century-Goods sells high quality Universal External Battery Packs for Laptops and Portable Batteries for iPads. We sell Tekkeon External Batteries, a leader in portable external batteries for cell phones, computers, iPads, Netbooks and more. The Tekkeon 3450 works great with Sunlinq Flexible Solar Panel as a lightweight portable solar laptop kit or Solar Power iPad kit. Duracell and Wagan makes a great 110 Volt Power Source for Laptops and iPads on the go. You can charge any of our Power Packs with AC Power, DC Power or with Sunlinq Solar Panels.