Charging your phone with a 9V [do you really need to?]

Okay, so if you happen to need some emergency battery power, and you don't happen to have a electrical outlet charger, or a portable charger but you do happen to have a 12V charger and a 9V battery ... you can do this:

Would I recommend this?  Probably not.  Seriously... portable batteries are cheap (not as cheap as that tho') and smaller, and there's no duct tape needed.

Check out our reviews on battery chargers and how to monitor your battery on our site here and avoid this 'hack'.