18650 usb chargers with leds - mod thoughts?

[Werner]

My kit came today, no battery but 10 ball bearings instead, kaidomain is weird.

Cross post to the DIY kit thread:

DIY Flashlight Power Bank

Hi guys anyone interested with this light [image] if i use 3.7v 3400 mAh battery i wonder how much current from the battery will i get when try to charge a cellphone since the cellphone need 5 volt to charge. anyone knows?