Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: John Stovall

Be very careful when ordering the Lenmar Mach 1 chargers. There are two models and they don't have the same plates. This one doen't have the plates for charging the Canon BP511 battery. I had to return mine because of this. It would be very help full if there was a better listing of the batteries the plates fit.