I purchased a battery 3/27/23. One year later 3/22/23, I'm having battery problems. I got a jump and took it to my local garage thinking, nothing could be wrong with a nearly new battery, and they told me the battery is defective. A 12 volt battery would only charge to 10 volts. I called 1-800-Battery Customer Service, and was told that my 3 year warranty was void if the battery was removed. I asked for a written copy of the warranty, and I was not given one. I found a document on the web site that said after 30 days I had to contact the manufacturer. I called CBS and they told me all battery warranties are handled through dealer. I called back and got the same garbage from 1800-Battery. Basically, if you buy a battery from these guys YOU HAVE NO WARRANTY.