Instruct: Classify Amazon reviews into positive or negative sentiment
Query: battery dies after one year

I bought this at Costco - 2 for $20 or so. Worked great at first, but then one of the charger handle gears broke. After a year, the remaining one wouldn't charge well, and then wouldn't charge at all. So, had to find this rare rechargeable battery, found one, and now it sort of works.Not reliable - won't buy again.