Here's the reply from Samlex:
The EVO-3012 does not provide 12 Volts. It will charge a 12 Volt battery bank when AC is available and will use the 12 Volts to generate 120 VAC if no AC is available, but it doesn’t “distribute” 12 VDC… Not knowing what is cut off by the switch I can’t say what will or will not still operate. The EVO can not function if it does not have an attached battery.
Need more information.
Standby mode simply keeps the EVO on (no charging or inverting), it will have no impact on 12 Volt loads, -as mentioned above it’s not involved in 12 Volt distribution.
If the EVO is put into a charge profile with no float (turn charger off after 2nd stage) then the batteries will drain with any loads you have and the charger will restart when the low threshold (RESET to BULK) is reached. This may be a better alternative and will keep the battery cycling but very slowly (depending on the load(s).
