Wanted to to leave information regarding the surge capacity of the Apex 300 that I was able (after several emails) to get from Bluetti (Request 403142),
Below are the surge limits for the Apex 300:
"The Apex 300 can handle the following surge loads:
4032W < load ≤ 4608W: Surge capacity for up to 2 minutes.
4608W < load ≤ 5760W: Surge capacity for up to 10 seconds.
Load > 5760W: Surge capacity for 0.5 seconds."
In addition, these are not only the limits for a single Apex 300 unit - these limits apply whether you have a single unit or 2 or 3 units plus a Hub A1. As my contact at Bluetti explained:
. . .“when multiple units are connected in parallel, only the power capacity and storage increase. The overload capacity does not change, nor does the duration for which it can sustain that overload.”
For example, I have a 240V motor that in my house that needed a battery backup. It requires a startup surge of 38A (9,120 watts) . Based on this information I cannot use a single or multiple Apex 300’s for this since the maximum surge load is still 7,680 watts (32A @240V).
Hopefully this info will be useful to others, since I could not find it anywhere else in Bluetti’s documentation.