I own an Apex 300 with some B300K expansion batteries to provide back-up power at my home.
In case of a prolonged grid outage, I wanted to be able to recharge my Bluetti system from an inverter generator I also own, so I purchased a Bluetti cable with a NEMA TT-30 male plug (to match the generator’s 30A AC output) and that plugs into the input inlet on the Apex 300.
After receipt of the cable and confirming a good fit at both ends, I consulted the Apex 300 manual, where it states “It’s recommended to enable the Charging Station in the app’s Advanced Setting.” I followed the “recommended” advice. Some days later I wanted to augment the SoC of the Apex 300 system to prepare for an upcoming storm that might cause a grid outage, but I was UNABLE to further charge the system using the standard 110VAC cable.
After a lot of frustration (trying different wall outlets, etc.) I tried looking at ALL SETTINGS again in the Bluetti app. There, under “Advanced Settings” was the one called “Charging Station” which, as “recommended” by the manual, was toggled to the “on” position. Toggling that “off” restored the Apex 300’s ability to charge via a standard 110V home outlet.
Bottom line: It should be made clear in the Apex 300 manual (and/or some sort of supplemental instruction packed with the accessory generator cable itself) that toggling this “recommended” switch may enable off-grid charging using the NEMA TT-30 cable (from, for example, my generator), but it also at the same time DISABLES charging the Apex 300 system using a standard 110VAC cable. This “recommendation” should be clearly explained as to what toggling this switch in the Bluetti App does in practice.