I'm not going to go into tearing apart Tom's statements. I think that has been done well enough.
Years ago I bought a car with a walmart battery, and it lasted for about two years after I bought the car. This was definitely my fault since the car was only driven about once every two weeks at it's most frequent times, and once every two or three months at others. I didn't know about trickle chargers then... Since the prorate wasn't quite up I went to them for the replacement. They made it easy to exchange it, gave me a credit towards the new one, and since then I have bought batteries from them for three cars. Only once have I had to replace a battery before the warranty period was up (In that case it failed at
22 months into a two year free-replacement warranty.) They just had me grab a new one off the shelf, did about one minute of paperwork, and I was out the door with no exchange of money. I have to say that I am very happy with their batteries/battery service.
I've chosen to stay with them despite the fact that I won't buy anything else from the store because of their horrble environmental and labor records. I stick with them simpy because their battteries are satisfactory, their exchange service works, and most importantly, I can find a walmart virtually anywhere that I might be traveling. That is something that I used to like about Sears. However, now many Sears do not have an automotive department, so sadly they have lost my business. I still buy my hand tools there though because of how great their replacement warranty is. I've ony had to use it twice, but it is great peace of mind.
Have a great day, Bill