Just in the first few days using this charger, I was able to recover $70 or so worth of batteries I thought were goners. It's also a solid compact design and easy to use.One thing I think they could improve is the instructions. I already knew what values to set from using R/C chargers, but I think someone without any experience with configurable chargers would find it confusing. A picture of where to find capacity on your batteries and a chart of capacity verse recommended charge current would be helpful. It also prompts for discharge current but says nothing about what value to use.