Normal EB55 self-discharge rates?

Product Discussion BLUETTI EB Series
1

A Google search reveals that “self discharge” (the amount of battery discharge when it is not in use) is supposed to be 2-5% a month for lithium phosphate batteries.

But my question is how much is the EB55 self-discharge rate affected by the off/on state of the DC and AC switches?

I’ve been having trouble with overnight self-discharge and after some testing I think this happens when the AC switch is left on. This makes sense to me because I’ve heard that an inverter always draws some power when it is on.

But if this is true, then, surely many other users must have experienced this. Anyone?

Or, are there any tech specs on this from Bluetti?

One other factor to consider is that even before 10am the inside of my van where the EB55 is kept can get very hot. In that case it could be a combination of the AC switch being left on and the heat.

2

Yes, leaving the AC and DC switches on, and especially the AC, will absolutely draw down the power much faster even when there is no actual load on the unit. I’m certain that’s everyone else’s experience as well.

3

Thanks @doecliff for the reply.

4

There’s some videos out there that list the efficiency but I believe its around 80% on the EB55. So from full to empty there’s about a 100 watts that you wouldn’t get anything from because its consumed by the device itself, (parasitic load). To know the actual answer you would have to do the math with your own unit and a known load.