the batteries i've had over the years would last a good 4 seasons if i didn't let them freeze. but therein lies the convenience...if you forget to take it out in winter, or accidentally leave something on, or over-charge it for whatever reason, you're out $30-$40, and it takes a quick trip to walmart to solve... as opposed to a yuasa, you're out $150...not worth the assumed minimal "quality" difference IMO