I just bought another couple of these kits and now I have 6x in total for my off-grid setup. The quality of the cells are great and I've been using 2x 280Ah kits (48v, 16 cell, Daly BMS with active balancer and parallel module) for over a year now, charging from 8.8kw solar panels during the day and discharging to my EV every night. It took a bit of searching to find an adequate box and all the bits (connectors, circuit breaker and cables) to make it all electrically safe and protected against the elements, since I had very specific space requirements, the diy kit (and price) was the best I could find in Australia. All the best with your own setup.