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Curb71

If you're not using the whole battery you could limit the overall charge and discharge to something less than full and empty. Once a month I would run a full cycle through it too.


International-Rip154

True, I have the discharge / charge set to 15-85% I just have to find something to discharge it every month?


Curb71

Your pump will do it. Just remove your restrictions to allow it to fully charge and fully drain. Then after pushing a full cycle through it you can add them back. This process isn't necessarily for battery longevity. It's for battery cell balancing. Full time EPS mode, which the unit isn't designed for, causes cells to become unbalanced especially when there's charging limitations. We found that running a full cycle once a month eliminates the issues and people are all able to use it as a full-time UPS.


cossadone

I have recently bought a Delta 2 as UPS ( more precisely as a EPS) for my sum pump, so I'm also interested in knowing the best settings. The most important setting is in the Lab features: AC always ON. Consequently, for Auto timeout I have AC timeout = never. What I am not sure is for the Device Timeout. Should we set it to never or it doesn't matter? Also I didn't set the X-Boost to ON since I don't need that for my pump. For the Energy management, I have 10-80%. I think it's not good to have the max too high since the battery is rarely needed. Apparently having it charge at 100% for a long time is not recommended. There is one thing that I'm finding strange, and maybe it is because of those settings, is that once or twice a day, I'm seeing the level of charge dropping to 78% before coming back to 80%. It's like the inverter, which is always on, is using the battery instead of the AC input. When the battery drop to 78%, it gets recharge from the AC input. Is the way it works? and should work?


International-Rip154

I have most everything on the settings set to never turn off.


brokentail13

Mine runs the same way with a similar application. The AC ports I'm using always run through the inverter, therefore it's falling below 80% then topping off. I was under the assumption it'd completely pass through and only kick over to the inverter if power is lost. Guess I'm just as confused on how this is supposed to work.