Instruct: Classify Amazon reviews into positive or negative sentiment
Query: B&D I2V Cordless Electric Broom

The B&D 12V Cordless Broom works well. It comes with a self contained battery and its own charging station, meaning it's ready for use when you are. It maintains about a 10-15 minute charge, and the airflow force is more than adequate for most "smooth surface" applications. Now the bad news: the plastic impeller, which forces the air from the broom, will last on average about 2 years, before it instantaneously shatters, rendering the broom useless. You cannot order the plastic impeller by itself; and instead, you have to order the complete "blower assembly", at a cost of about $15 less than a completely new power broom. Accordingly, unless you wish to replace the blower assembly or complete cordless broom every couple of years or so, I believe you would be better served by purchasing a model which contains a metal impeller.