I have a Samsung Galaxy s5 it works great but I got a 9ft charger that glows in the dark it's brand new I just bought it a few weeks ago. When I charge my phone it either charges super slow or it charges the battery percentage backwards. I know most phones don't work with a single charger but I have another one that's a single charger it charges perfectly I don't get why my light up one won't. What's wrong with it ? How can I fix this ?