After many years of use, the 56V batteries that I purchased from Worx finally stopped taking a charge. I tried to purchase new, but Worx no longer sells them, and after market run $300/pc. I decided to send them in for repair instead, and I am supper happy! They charge like new batteries, and the charge holds a long time. I received them quicker than expected, and very well packaged. Now I have two like-new batteries for a fraction of the cost of replacement. Will definitely use MTO again!