Instruct: Classify the given Amazon review into its appropriate rating category
Query: Very slow charging, don't buy if you need your batteries charged in less than 12 hours.

Battery charging takes FOREVER, I really wish I would have seen that before purchasing. But I do enjoy that you can charge 8 batteries at once, however if I would have gotten a faster 4 pack charger I could have done 2 or 3 sets in the same amount of time. Also what is up with the yellow battery lite? Red is charging and green is charged ... but what is yellow? Nothing was mentioned about that in the description.