Know Which Charger is the Best
If you have a few chargers for your phone or other wireless tech you can use this gadget to determine which charger gives best quality of charging. It shows amperage and voltage and you can easily see which charger is more powerful. Also costs just $1.
Why is it cool? You can find which chargers are best and use them to save time on charging. Also costs just $1.
Where to buy? Here.