What happens - it loops in discharging station for 1-2% and then it charge it back to 90%.
But i think it is not correct. And expected behavior should be - bypass mode, pass throw exact power to charge devices and keep battery untouched, as GRID power available.
When TIME OF USE is on.
And off- peak time is set in range from 00:00 to 23:00, in this case it start using GRID power to charge devices and battery is not in use. (expected behavior).
I think generally when TOU feature is not active, that should basically be equal to off-peak = all day.
But that is not happen somehow, and I think it is a correct issue here. With enabled GRID power, battery should fall in loop 1-2 % discharge and 1-2 % charge.
@nlogic
Hi, I think using Customized UPS with Time Of Use disabled is for allowing users to maintain a SOC level equal to the high end of the SOC settings. In your case 90%. Reason being STANDARD UPS Mode will always charge and maintain at 100%. Many people believe this is not good for the battery over time and like to only charge to 80%. I recently starting using this feature myself.
Yes it should maintain 90% of charge.
But when GRID power is available, I’m expecting bypass mode - in which INPUT Power = OUTPUT power. And battery in this case should not be used.
What happens, that when it fully charged to 90% (max limit) it start using battery with enabled GRID power.
Discharge battery like to 88% and then recharge it back to 90%.
In Standard UPS mode - when max limit is 100% by default - it will use bypass mode, when fully charged.
So here is a difference which I’m not expecting.
In my case - is only that in Custom Mode I set 10-90% limit.
Hi, @nlogic I believe the reason you see the drop to 88% is from self consumption by your Elite 100. Battery power is not being sent to your load - it is being used for internal needs of your unit. When in bypass mode the grid does not deliver the extra power to your unit for its internal operations.
When the battery level drops to 88% the unit will start drawing extra from the grid to recharge to 90%. During this time power in is greater than power out. This also happens in Standard UPS Mode - battery drops to around 98% and grid power increases to charge back up to 100%. I have an Elite 30 and I believe your Elite 100 operates the same way.
Passthrough mode exists only on AC circuit only. The DC side will continue to consume battery to run the BMS and other internals (self consumption). It might take a few hours since its so low (5 watts or so), but it will eventually deplete, but the UPS should just kick in and top it back off. Put the power station under a slight DC load and you’ll see its not 1:1. Only when the battery depletes below 100% (or below your set charging parameters) does it kick in to supply additional wattage to compensate for the additional load. Say you have it at 90% and are supplying a constant AC load of 100W, then you plug in your laptop over USB Type C, it will still charge at 100W, then when it depletes to 89% it will charge at above 100W.
Good to know that passthrough works only for AC. That is exactly my case. You can see on screenshot, that I have only AC output there.
I still think that feature Time of Use is not working correctly in OFF state.
I think if station is connected to GRID and there is only AC output - we should have passthrough power. And not have 0 Input as first screenshot is showing.
it is Custom mode.
I believe You don’t spot the problem that I’m trying to describe.
Yes It’s minor issue, but still.
Time Of Use - exist in order to set peak and off-peak hours. For example I want to charge it at night, because tariffs are lower. Or any other reason.
When this feature is OFF, it should basically be equal to off-peak ALL day.
Passthrough works when TOF set ON, and it’s off-peak time range. Passthrough DON’T works when TOF set OFF.
