Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do Not Buy This Product

Read the reviews on this product and note the common thread. For us, the lifespan for this unit was about 4 months. After that, it would no longer hold a charge. I cleaned the contacts and tried to re-initialize it with an additional 16 hour charge. It continued to die within seconds. Since I knew the unit was headed for the trash, I opened it up to see what was inside. It was full of mold. So an item that is designed to hold and dispense water isn't even sealed well enough to protect from ordinary use. The battery, of course, is soldered in and impossible to replace. In short, this is a poorly designed piece of junk. Do not buy this product!