Battery Test Results - may be of interest
75% of Home Batteries Faulty In Long Term Battery Testing
similar to this one Batteries – Lithium Ion Battery Test Centre
I have been watching their test reports with interest, seeing as I have four US2000’s and two US3000’s in my battery stack. So far, after 21 months of 80% capacity used daily, they are still standing on 97% SOH. Personally I am happy with their performance thus far, but should I ever need another bank, I will definitely look at standalone cells to build up my own battery bank.