DIY Keychain Phone Charger - (runs without electricity)

I make for my self tiny 9v phone charger that i made out of usb car charger and its power up by alkaline 9v battery. I put on my keyring so i will never forget and 9v batteries I can purchase almost everywhere. HACKSCRIBE to my channel page and visit my cool videos: Add me on Facebook (click LIKE on Facebook to add me)