This is already second order, and we are very satisfied. Batteries are top quality and very consistent. Both ACIR and DCIR are showing very tight tolerances and capacitance is also about 5 % over of nominal value. We are using them for commercial grid level energy storage system have extensively tested this battery. 5 stars for Nancy (rep) who has been exceptional in every aspect for making all purchasing and support process a breeze!

Amazing, they have an app to diagnose and correct issues with their batteries via the Internet. I purchased 2 batteries, one was periodically throwing an alarm. Their tech stayed with me till he tracked down the problem. It was one cell delivering a low voltage signal. I had a new replacement battery so fast it made my head spin. Both batteries are performing as expected and I expect that they will do so for years.thanks