Solar power bank for arduino

Hi all

I try to connect my solar power bank (http://it.aliexpress.com/item/Waterproof-Solar-Power-Bank-12000mAh-Portable-Powerbank-External-Mobile-Battery-Pack-Charger-2-Output-LED-for/32496225372.html?isOrigTitle=true) to my Arduino UNO (I fully charged it before to connect) using USB cable.

I see that after 20sec, its shutdown. I check the battery pack, but it works fine.

I check with my mobile and battery pack works perfectly.

Any idea?

thanks all

Link

Do you have anything else connected to your Arduino?

Weedpharma