Love the 1kw PV input on the Elite 100 V2! Got a nerdy efficiency question though:
I have a 75w DC and 364w AC load against a 400-600w Solar input. I noticed on PV Priority UPS mode the system runs the AC load from the grid and lets solar charge the SoC back to 50%
My question is would it be better to eliminate the DC load entirely or does DC output have some small advantage over routing through the AC inverter unnecessarily?
Using the inverter for small loads is less efficient than for higher loads. The same applies for DC loads. This is because the self consumption of the Elite is relatively stable regardless of the load. Therefore it is a lower % of total load at the higher end. i.e for very low loads self consumption can be higher than the actual load.
Your noted loads are in, what I would call the “Sweet Spot”. Your total load on the battery is 449W. Total input is 900W, so the battery is charging at 451W = All good.
Final observation, leave it as it is, lol. If it aint broke, don’t fix it…
Nicely said @Mandp Mike! Thanks for your guidance in this. That .2C range seems to be the sweet spot for efficiency in most all these units. And to add to this, I absolutely love that minimizing the overhead losses has been a focus for Bluetti in the past few years and they’ve been able to continually increase the overall efficiency numbers across the board. Keep it coming @BLUETTI !!
