We are using this to store power for our solar panels. It's been working great so far with very little maintenance. The only thing I would do differently if I were to build it again is make sure you can get proper ventilation in your enclosure as there isn't enough airflow when running for extended periods or during higher temperatures. There is also some noise produced from the system but nothing too bad. This battery produces about 4 amps per hour at 1 volt for an average amount of sunlight hitting the panel.