battery hasher

Just started my first load test running my BatteryHasher off my offgrid battery bank - Going to run it from full to flat and see how long it lasts below is a snapshot from my BMS - Full video to come once completed - load is DC to DC running 2 x R9 290x Cards drawing 553watts dc from batteries. All solar and other loads have been shut down for the test. I'm thinking 60-70 hours of hashing before they are flat.