WF-139 problems

I just tried to charge 18650 batteries and a 14500 on my wf-139. When I plug it in, nothing lights up. When I put batteries in there, the lights turn green. The batteries are from a little under 3.9 V to over 4, 4.1 on the DMM.

I was able to charge at these levels a couple days ago. What now?

Oh never mind the switch was off! I didn’t realize that plug was on a switch :frowning:

Glad we could help you fix the problem

That’s the problem with these dang gadgets… Not user-friendly at all !
They should have a built-in warning that says that they’re not connected :smiley: :smiley:

Ha haha :smiley: