Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Terrible battery life

I bought this smoke detector almost exactly a year ago. It seemed like the batteries ran out pretty quickly--we've had to change the batteries a couple of times already. The last time we had to change the batteries, I decided to write down the date. Today I got another low battery warning. I checked the date, and the last time we changed the batteries was November 23--one week ago. Ridiculous. The product is still under warranty, but Kidde requires the consumer to pay shipping both ways. The fact that this product is so faulty is particularly scary considering that people rely on smoke detectors to save lives. I don't trust this product at all and will replace it with a different brand.