I sent two 5.0Ah and one 2.5Ah EGO batteries that were at the end of their lifecycle. After a couple of weeks, I received the batteries from MTO. They were well packaged and even included instructions on how to better preserve my batteries (let them cool before charging). The batteries work like new, and may even get me a little farther mowing my yard on a charge than the original cells. I saved a lot of money rebuilding instead of buying new. I'll definitely be using MTO in the future, the next time I need a rebuild.