Portable USB chargers are nothing new, but they drain power pretty fast if you’re charging multiple devices.
Plus, the charger itself always needs to be charged up to work.
That means you might power it with anything from a battery pack to car battery to a solar panel.
Then, that power can be distributed to pretty much any equipment that charges via USB.
Even better, you’re able to build the whole thing for about $10.
Universal Portable USB Charger| Instructables
