I ordered the light and batteries/charger on June 13th. Emails asking for tracking info were ignored for 3 weeks. Someone suggested filing a PayPal claim would get his attention. It did. He informed me of the optic issue. I told him I wanted to wait for the light with the optic I ordered. A month later it came, with the non-carclo optic. What did I wait for?
What are you plugging the usb power cord into and are you using a good quality usb cord. Says it needs 5v 2a input power.
On the website it says “when a over discharged IMR is inserted the screen will display EE EE, in this case long press V for restoration mode”.
Since you didn’t say it was displaying EE EE and showing 0v, I’m just guessing that its not plugged in to a appropriate power source or maybe a cheap usb cord.
Some cords will not do more than 1 amp even when plug into a 2 amp capable power source. I’m guessing the resistance is to high and the device steps down the charging to 1 amp thinking the power source isn’t capable of 2 amps. Just my guess, but its not the first time I have seen cheap usb power cords only allow 1 amp output.
What happens when you put them into the flashlight? If it lights up then the cells aren’t dead. When cells are sent out they are usually around 3.6v give or take a little. I would also try to find someone who has a DMM to check the cell voltage.