Un-boxed 4 batteries, read instructions, stacked batteries, started batteries with button 3 seconds, verified zero voltage, verified SOC (status of charge) was equal on all 4, flipped 4 breakers on, verified voltage of each battery, turned all off (3 seconds on button), wired as shown in instructions, turned on all again, verified voltage, all off again, wired to inverter, all batteries on again, battery Rocker switch (inverter) turned on, verified battery voltage, verified split-phase AC output voltage. No step of a stepper! Now to connect to mains and breaker box.