Hello, I am experiencing the same issue. However, I’m not even using solar. It’s just plugged into the wall.
Charging mode set automatic.
I can’t tell if pass-through grid is working or not. It doesn’t even look like it is because whenever I have something plugged in, an AC on, there’s always an AC input and AC output. So I can’t verify the UPS is actually working. I kind of feel like I got scammed.
While it was sitting at 99% I was reading over the manual and then I heard the charger kick up and started charging at 1400 watts and then as soon as it hit 100% the AC shut off for the second time today. This thing is brand new. I received it the day before yesterday and I’ve already updated the firmware.
The device is set up as backup working mode.
There seems to be a button for select UPS, and it says standby, but I can’t press it.
I’m tempted to return it. and keep using my AC200 Max
You can verify whether UPS is working by unplugging the grid from the Apex300. If your AC output is kept on and your load are powered, then UPS is working. The Apex300 will always use grid to run AC load if the AC load is <150w, no matter what, they call that grid pass-through. If the AC output is >150w, then AC will only be used some of the time depending on operating mode.
In UPS mode, you cannot change the mode on the app. It says Standby and I think that’s the only mode available on the app. Note that when you are using 240v output (and only 240v output mode), the left set of 120V outlets are actually using “online” mode and not “standby” mode. They are always powered by the battery and will not glitch at all when AC goes out. The right set of 120V output are on standby mode and may glitch up to 20ms.
The AC cut off is definitely not normal. I am experiencing that when my Apex300 is connected to B300 batteries. I am working with Bluetti tech to find a solution now. What batteries are you using with your Apex300 when the AC output drop at 100% SOC happens?
I just came back because I just discovered that, yeah, i think it’s the B300 battery. I already had my suspicions when the estimated time remaining didn’t match up with the capacity of the B300 after i added it on. How annoying. I hope they can fix it. Maybe its an overcharge protection triggering. Because it seems like the apex thinks it only holds 2700 Wh. At least thats how it looks when calculating time remaining.
To answer your question i was running a b300k and a b300
@Unpopularpizza Please send an email to Bluetti support about this with the details and tell them you SN. This way, when there is firmware update, they can push it to your unit. I was testing this with the Apex alone, Apex+B300k and Apex+B300, and the only time it cut of is when the B300 is in use. The SOC of the B300 also seems out of sync, so there is likely some weird interaction here. But please email lsale@bluettipower.com
If you want to temporary avoid this issue, change the working mode to “self-consumption” and SOC to something less than 100%. This would prevent the unit from using grid to charge it beyond your set point. So you won’t hit 100% cut off issue. It sucks but is a temporary word around. That doesn’t work for me as I am also using solar to charge and it will hit 100% on a sunny day (though that is unlikely to happen as there is snow on my panels now).
Similar but slightly different issue on my end. I have registered the problem with Bluetti but have yet to hear back from them. I have 3 Apex 300 units connected to a Hub A1 and each has 3 B300K batteries connected. The Eco mode is shut off and they are not connected to solar. This power array is connected to a manual switch for home backup in the event of a power outage. Where the issue is similar is that the AC output at the front plugs is automatically shutting down a couple of times a day even though I have about 120W of output connected to the front outlets of one of the units. Moving the draw to one of the other Apex 300 head units has no effect. All three units turn off AC output relatively randomly but all at the same time since 2 of the units are acting as slaves to the master unit. What is also interesting is that the Hub A1 will report 500 to 600w of output when the actual is 120 to 150w as tested with a meter at the plugs. All of the units and the Hub A1 report the latest firmware. I sincerely hope that Bluetti figures out a fix for this quickly. I have sent in serial numbers and firmware screen shots. It is frustrating to send in a trouble ticket and wait days until you get a response from China. They really need to either base a higher level of US support here or at least have technical support working local hours.
I am currently testing out an updated BMS for the B300 batteries, will report back to see if it fixes the issue. @Caesar1 your problem may be related but different. It looks like you have a wattage reporting issue and a AC output shut off issue. Does your AC shut off when the SOC reaches 100%? Do you have certain batteries attached to it? What kind of loads are you running?
3 Apex 300 Units connected to 3 B300K batteries each. They are all connected through a Hub A1. And yes, the AC shutoff seems to occur when SOC reaches 100%. The load being reported is 0W at the hub A1 level but a meter a the plugs show 120-150W.
Unfortunately, the new B300 firmware did not fully resolve the issue. My unit did not shut down when charging using the grid with no AC load. However, when I was using both solar and grid to charge with a 70W AC load, the AC shut off when the state of charge reached 100%. I noticed the error logged history shows a battery overvoltage error at the time when AC shut off. I am still in contact with Bluedi Support and will be sending them more information. We’ll keep us posted.
@snowstorm just out of curiosity, have you tried connecting B300 and B300K to Apex 300 in different orders? Meaning Apex->B300->B300K and Apex->B300K->B300? Maybe that will make it behave differently?
Maybe… but that is not physically possible if I was to connect everything, as I have 1 short cable and 2 long ones. The short cable can only connect Apex300 to B300k that is directly below.
I have tried with Apex300 only, Apex+B300k, and Apex+B300. The only time the AC shutoff happens is when the B300 is here. So the problem is very likely related to B300.
BLUETTI say they are working on a new firmware and will let me test is when it is ready.
I’m going to jump in on this discussion as well (thanks @snowstorm ) @BLUETTI as my Apex 300 system is having this symptom as well.
I have the Apex 300, one B300k battery, four B300 batteries, and the SolarX 4K. In the past week there have been 2 good sunny days, and I have been playing with the UPS self-consumption mode (set at 50% currently) in order to get a full charge on the batteries via solar. On the two sunny days we’ve had there was enough solar energy to get the batteries to 100%, and on both days, shortly (within 15 minutes or so) after getting to 100%, dropping to 99%, and then getting back to 100% the AC output turned off (not the Apex 300, just the AC output). Both times all I had to do was turn the AC output on again.
Here is the firmware information for my system. @BLUETTI can you please include me with any firmware updates related to this issue?
My Apex 300 firmware is as follows:
SN: AP3002509000069149
IOT: v8026.13
ARM: v2204.13
DSP: v2174.13
BMS: v1073.07
I have been in conversation with Bluetti tech team for the past 2 weeks and am trying out a series of firmware for the B300 BMS. I originally say the issue on V1014.18, Bluetti sent me V1014.19 but that didn’t work, I am just starting to test V1014.20 this morning. So far, the error didn’t occur. I was able to charge to 100% using solar with grid pass-through active. I am going to do more testing today.
@hnymann If you go to your app, go into the Apex300, on the top right, there is a “!” with a circle on it. Go there and check history, do you see any logged alerts? On mine, I can see E010 happening when AC cut off, it relates to Battery voltage high/Hardware battery Overvoltage
How did you get V1021.15 on one of your B300? How come they are all on different BMS? In my Apex300, I can only update B300 BMS if I connect them one at a time to the Apex300
I checked the alarm history, but nothing shows up there, nor have I seen any errors appear.
I had an earlier support request for my system related to battery compatibility with the Apex 300 and the SolarX 4K along with my B300k and B300 batteries, and it was in relation to that issue that I received the v1021.15 firmware (along with updates for the other B300 batteries as well).