worth every penny I'm using these to replace an old battery that was dying I've only used one and it works great. I strongly recommend buying them. Update 7/27/2016 I've had these batteries for 4 months, had to put in a second one as the first seems to be holding a charge now. Can't really complain when I bought them, I only paid $2 for both. . But I'm disappointed that they don't seem to last longer.
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