Sunny boy 3600 smart energy battery voltage 150 v battery capacity 2 09 kwh 2 08 kwh 2 10 kwh battery efficiency 94 9 96 2 97 9 power consumption of the battery management system no load operation standby 1 7 w 0. The new sunny boy 3 0 6 0 ensures maximum energy yields for private homes. The residential solar pv inverter system market is changing rapidly so sma designed a superior residential solution that is sleeker lighter more efficient and easier to install.