Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Simple, efficient

TheCanon CB-2LV Battery Charger for the Canon NB-4L Li-Ion Batteryis the simplest, easy-to-use item of its kind I've ever owned. The battery slips into the charger body easily, and the AC prongs recess into the body when not in use. What's not to like? And a point about the camera ... Canon uses generic, universal mini-USB connector instead of proprietary nonsense connectors. THREE CHEERS CANON!