2 ms·
When battery life is a concern, I carry around a small flashlight and a (very) short USB cable. The flashlight can both receive charge (from the wall) and send
by stickfigure 3y ago
When battery life is a concern, I carry around a small flashlight and a (very) short USB cable. The flashlight can both receive charge (from the wall) and send charge (to the phone) through its USB port.
Lots of high-end flashlights do this. Mine isn't much larger than the 21700 cell it contains. If you want to go smaller you can get a 1850-based flashlight and still almost double the capacity of your phone.
Plus, it's a flashlight.
- JohnFen 3y agoBut it doesn't really address the use case well. It won't fully charge the phone and it takes time to do the charging.
- stickfigure 3y agoI don't understand. Why won't it fully charge the phone? And you can use the phone while it's plugged in. In all respects it gives you ~2X the number of useful hours at the cost of having to carry around a very small item.