Universal Magnetic USB Charger
Another interesting idea for charging those 18650 (or etc) lithium batteries (and the like) Only 20.5 grams. Weltool version, Folomov version from approx US$12.69 (Feb 2018) To convert it to a 3600 mAh power bank you would attach it eg with cable or connector to something else, say your phone. See: https://www.amazon.com/dp/B075F4MD1G NB the 18650 […]