So I have a feeling my Nitecore D2 is busy dying on me. Either that or my batteries. But doesn't look like its charging my batteries properly. I have cells ranging from a year old and the latest set is under 3 months old. Anyways, what charger do I get? Nitecore: New I2? UM20 Golisi: i20? Any other suggestions? Don't really want to spend more than R300.