Tighten screws to ensure a good electrical and mechanical connection is made. 5. Insert 9 volt battery connector wires into terminal block connections as shown making sure that any insulation is ...

In a power outage, a 9 volt battery can give your phone enough juice to make a call or send a few texts. You may have seen this hack before, but it works especially well in this variation where ...

The Kickstarter-backed Plan V could get you out of such a fix, as it's a small and light keyring-based device that can be used to charge your smartphone from a 9-volt battery. Likened by its ...