• darvinhg
    +5

    My guess would be really slow. Like 12 hours in the sun to charge a phone.

    • Crawls
      +5

      Yeah that's what I was thinking

    • AdelleChattre
      +4

      Not a smart phone, not at that size.

      • 8mm
        +3

        Yeah I would guess like 25-50% of a smart phone (approx 1000 mAh)