Recognize these little USB charger boards?

[hank]

cross-reference — there is a good discussion of components in cheap junk, with pictures, at

Review: cheap 18650 mobile power bank

Warning ! Apparently there is another variant of this power bank with PCB using FM6316CE ic that appears to be very problematic, perhaps even dangerous. Seems like white color power bank is still OK… This generic power bank appeared rather recently in many shops with very decent specifications and incredible price in 2-3 $ range ! Although I have no means to test it thoroughly as some other members, some basic info might be helpful… [image] Construction of this power bank is rather simple and…