Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Tend to leak over time

I bought two of the Maxell megamax valuepak of AA alkaline batteries. At first I was happy with the price and performance. Now that they are getting near their expiration date, I am finding more and more of them leaking. I'm talking about 25% leaking! One of the 4-packs is leaking while still sealed inside the original packaging. It seems like every time I go to change a battery, there's a leaker, and a mess to be cleaned up. I use a dremel tool with a wire brush attachment to try to clean up. I use batteries in a lot of electronic devices and this is scaring me because there is no warrantee of any kind. In my view, this product is crap. If one device is ruined, what I thought I was saving will be lost many times over.