FYI DIYers - I purchased 49 Leaf modules from Tech Direct on eBay to double my battery bank capacity. Their advertising says modules have a minimum of 70% from original capacity. This equates to 17.15Kwh for all 49 modules and the ones they sent me have less than 10Kwh of capacity. Instead of replacing the modules which would require a great deal of work, I've asked for $1000 refund of the $3200 purchase price. Bottom line is, BUYER BEWARE!