Nitecore D4 LED backlight short and fix

Batteries and Chargers Chargers
1

Last night I took out my Nitecore D4 to charge some batteries and I noticed that the backlight did not turn on. I picked it up and had a look to see if the backlight was turned off, but it wasn't so I put it back down. As the D4 touched the floor the backlight flashed on and off a couple times. I thought this was strange so I opened the D4 up and found this:

Screws are underneath the rubber feet.

The LED backlight wires are the red and black ones next to each other. Turns out the negative wire was touching over the positive contact and caused the backlight to short. After bending the wires apart and epoxying over them, I plugged the D4 back in and the backlight works again! At least this was an easy fix with no permanent damage, but I think Nitecore should of thought about this during the design stage of this charger. I hope this helps anyone else with the same problem.

2

that backlight looks like it was an afterthought, shoddy soldering and bad engineering
shame on you Nitecore

3

My D4 display wires are connected neatly by two pins connector type (no, I didn’t mod it, its original)

4

Hmm... Could mine be counterfeit? I bought it from Banggood. Or perhaps iron potato's is the 2nd revision.

5

I bought it from Aliexpress

Doesn’t appear to have additional markings though

6

I got mine from banggood last week no problems yet, but i realised that I wanted the functionality of the opus in the nice black and yellow package of the nitecore