I read a few topics and external articles so I understand an inverter with no load connected still draws power.
Not complaining here, just getting to understand my device better to use it in a more predictable/educated way.
My questions are specific to AC300 as I only found topics about AC200.
Test conditions today: full sun, PV input reading on average 100-120Watts, no load, AC inverter on.
- 11am, battery is at 50%
- 2pm, battery is still at 50%
In 3hrs, that’s at least 300Wh generated.
B300 is 3072Wh, so ignoring all laws of physics, my unit generated about 10% of battery equivalent charge.
With AC200’s no-load inverter in mind (forum admin mentions 23Wh), the AC300’s no-load consumption seems higher. Is it correct that it drains about 2-3% of battery equivalent per hour, which is about 100Wh?
Also, the inverters’ 86% efficiency seems quite good. Considering the truck-vs-moped analogy where a simple burger needs to be delivered, I wonder: from what AC load is the AC300 inverters’ efficiency at its top?
Use case: fridge + other 24/7 appliances in a future offgrid configuration.
Ideally a few data points like « efficiency at 50W, 150W, 300W, 1000W, 3000W » would really help me.
Last question: does DC have the same « no load draw » ? I didn’t test the « DC out on with no load » yet.
Thanks in advance for the help!