Easy to use. Need to modify to usb c for more convenience
This is one of the rare USB battery charger that can charge protected 21700 battery. It is compact and light so that it can be conveniently carried around. It can charge a wide range of my batteries from 16340 to 26650 and protected 21700 with a charging current of 1000mA. It is simple to use and does not have a lot of controls, good for majority of users who just want to pop in a battery and let the charger do the rest until it is fully charged.
I have only 1 improvment to share,I would love to see the charging cable change to type C charging cable