Pico can run out any battery pack you might have, like Anker or Mi or Mophie. By not including an internal battery, we have
1. Maximized the space available for grow medium, plants, and water within Pico
2. Skipped regulations/ testings necessary, also saves hassle in shipping
3. Reducing the number of components that can go wrong -during shipping and in usage - thereby increasing the usable life of the product
4. Makes Pico cheaper and accessible to all!