ANSWERED BY THE ENGINEERING TEAM (NO-LOAD DRAINS, AT 22℃/71℉, FOR REFERENCE ONLY) :
AC ON+ DC ON: 1.5-2.0% charge lost per hour, 36~48% per day.
[Correction] Power On, AC OFF+DC OFF: 0.4-0.7% charge lost per hour, 9.5~16.8% per day.
*Temperature is a key factor affecting the discharge performance of lithium-iron-phosphate batteries. If your AC200P has large deviation results at a similar temperature , please contact us at firstname.lastname@example.org. (And the 2000Watt inverter is a hungry monster even with no load, that’s the reason why we developed the ECO mode in the first place)