Instruct: Classify a review as either positive or negative.
Query: DOA Battery - Good Amazon Service

First battery ordered on 4/17 went dead after a couple days. Amazon sent a replacement. The replacement battery is dead on arrival. Now I am the one that feel quilty to ask for either another set or a refund. The Roomba is now just collecting dust together with the brand new 2nd battery. iRobot should change their battery supplier.