I've been looking for a simple charger and found this one. This charger to batteries can only charge in pairs. Is not a problem for me since I have 4 batteries in my camera. During operation it is noticeable that in the beginning when no batteries are drinne, light up the green. But also does not bother me. So batteries in and the lights are red, which means that it loads. If the batteries are charged, it will turn green.
Anyone looking for a simple charger is served here super.