For a while I have ben installing AC300 in the field and have no issues with them. Being discontinued our Bluetti rep has been selling up a APEX 300, saying it was the same just new. The problem I have is that I am able to connect 3 480W Qcells panels to the AC300 with no issues. I usually do two in series and one by itself. Since switching to the APEX 300, you cant connect two in series, it will cause the APEX 300 to error. The remedy is to connect them in parallel and 1 by itself. That seems ok to the customer but goes against their specs. The real issue I’m having and wanted to get the community to see if they have had the same issue. When we connected into the APEX 300 using the supplied XT60 connector the APEX will charge on that port. If i connect the second panel to the second XT60 power, I only see 48V but no incoming watts on port two, like it is only allowing for one port to charge at a time. If i remove the first port, the port that was not charging will start to charge. I’ve gone through ever setting, firmware, checked all cables, and tested panels. Any idea what the issue could be, or is it working as it should. Thanks all.
Hello,
Thank you for reaching out! To assist you better, could you please provide the specifications of your solar panels and the error code you are encountering? Additionally, please share your SN code and firmware version information. This will help us investigate the issue further.
Thank you for your cooperation!
I am glad its not just me. I have exactly this problem running 2 Renogy 200W Shadowflux solar panels (brand new). I get voltage coming in but no watts. I have tested with a multimeter, no issues with reverse polarity etc and I also receive amperage on the multimeter so it must be something to do with the APEX300. I have been working with support but up until now this unfortunately hasnt been fixed. It worked temporarily after upgrading to the v2204.12 firmware, but after a couple of hours stopped again (which further supports the panels and cables are all fine). Each panel runs its own connection so not in series or parallel in my case. These are my panels: 200W/120W ShadowFlux Anti-Shading N-Type Solar Panel | Renogy UK
This is what I received from support. I have not tried it yet as Im not in the field but worth a shot.
Sorry for the late reply due to the weekend off.
The Apex 300 supports two XT60 DC input ports, each capable of handling up to 1,200W, with a voltage range of 12V–60V and current up to 20A per port. Both ports are designed to work simultaneously.
However, for both ports to charge at the same time, you must ensure:
Each solar panel’s output is within the supported range:
Voltage (Voc): 12V–60V
Current: ≤20A
Power: ≤1,200W per port
In the app’s Advanced Mode, set the DC input source to “PV” for both inputs:
For voltages between 30V and 60V, current should be ≤20A.
If using lower voltages (11V–30V), current should be ≤8.2A.
Ensure that both panels are connected properly and not interfering with each other due to mismatched characteristics or wiring issues.
From your description, it seems like only one port is actively charging at a time despite both showing voltage readings. This behavior may indicate:
A possible configuration issue in the app settings (check if Pro Mode is enabled).
One panel might be prioritized due to internal MPPT logic or slight differences in panel performance.
There could be an issue with how the system detects load sharing between two identical sources.
To resolve this:
Enable Pro Mode in the app under Advanced Settings.
Set both DC input sources explicitly to “PV”.
If the problem still persists, please provide the SN and firmware version so that we can attempt to solve the issue by upgrading the firmware for you separately.
In addition, please also provide your order invoice so that we can provide subsequent services.
Looking forward to hearing from you.
So the APEX 300 can only take a VOC of 60v
Hey chuck417
You appear to be correct. I originally purchased the AC300 because it did not have a battery in it like most of the other companies. That way if a battery went bad you didn’t have to ship the whole thing back to the factory to get the battery fixed. And the AC300 can take up to 150 volts of solar on each of it’s two solar inputs.
The Apex only lets you pot 60v of solar input. This requires you to get a Solar X 4k or some other controller to put any serious amount of PV input. Although you can have more battery storage with the Apex300 and if you purchase a hub 1A get 50 amps of 240 volts out of it the solar input is disappointing…