I have a brand new set (free gift with CTC membership) of these lights that don’t seem to want to charge.

Supposedly the power / charging led should show red for <25%, red & green for 25-75% and green for >75%. A full charge is expected to take 3 to 4 hours

Mine have been charging for 18 hours via a mains usb adaptor & 3 hours on the laptop but are still showing just red. One of them did briefly show green but after swapping usb sockets in case one was faulty its never gone green since.

Anyone else have these lights and had similar issues?