Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Battery is junk, warranty service expensive

I like the brushed while it worked. However in under a year it would no longer hold a charge. I figured it should be easy enough to just swap out the battery. Turns out it is not. You have to get a whole new 'handle' as they call it. No problem, it has a lifetime warranty right? Well it does, but it costs $20 in shipping and processing fees to get a new one. I have heard of paying shipping, but 'warranty processing fees' ? Pretty ridiculous.I was also told by the Warranty Service representative that you shouldn't return the handle the charger base everyday, other wise it will kill the battery. If this is true it (which it appears to be) that means they are using older NiCad or NiMh batteries inside instead of Lithium Ion, which doesnt have any memory effect.I will not be purchasing any other rotodent products.