Hello, sorry if this question has been covered, I couldn’t find it in the forums.
I have the AC200L connected to two B300K units. Theoretically this should give me 8192 watts. However, when the display shows the estimate of battery hours left, it seems based on a total of approx 5500 watts (which would be about the amount of the two B300K units only, not including the AC200L itself).
Does anyone know if the unit draws from only the external batteries first, and then if they are depleted would switch to its own battery? I hope this is the case, but worried that it might be the 8192 watts, just underperforming possibly because it’s in a cold spot (approx +2 celsius).
I’m nervous to test this as it’'s powering an important fan in an animal shelter,
Thanks!!
Hi @marty15
Welcome to the bluetti community forum!
As far as i know, the external battery gets drawn first. You could calculate the run time for yourself using this formular:
Batteriecapacity (Wh) x DoD (usally 90 - 95%) x Invertereffiencency / (Load + selfconsumption). For AC200L it would be:
7577 Wh x 95% x 93% / (Place your load here + 12W)
Hope that helped
Erik
For some other Bluetti units anyway (I don’t have the AC200L) the system tries to draw from internal and external packs identically. I don’t know why it would be different with the 200L, although it’s possible it is different.