Nice Charger - instructions are on review page!
Instructions are tiny, if you find them. Solid red light is when charging. Blinking red light is bad battery OR battery is already charged (you can put it in a flashlight and check it or you can use a battery tester). Blinking green means battery is 85% charged or more ("ready to use") and solid green light means fully charged (100%). The smaller AAA batteries are put in slightly differently from the larger AA batteries. If you put the AAA in the charger by placing the flat side (negative end) onto the lower clips first, then drop the top (+) into the charger while pulling against the clip just a bit, it works. (I have seen reviews on another site where the user could not insert the AAA size properly). On the larger AA batteries, I place the top (+ side) into the charger first and slide the bottom into the charger. Not hard once you do it. If you can't put the battery into the charger, you might need to stop buying items like this. If you want the speed charge option, you just put two batteries in the charger instead of using all 4 slots (use one side of the charger). If no lights come on, the battery is not inserted properly and might just need to be rolled into the slot better to make good contact.
