Does anyone have solar hooked up to **(2)** BLUETTI EP500pros **AND** a Split Phase Fusion Box?

Thank you for reading this! - I am hoping you can shed some light on this … I can not find one video or photo showing solar hooked up to two EP500 attached to a split fusion box, why is that?

This is why I want to know:

I have (2) BLUETTI EP500pros AND a Split Phase Fusion Box; I want to add solar panels to charge both of them from solar while connected with the Fusion Box. When configured this way, I am confused about the max wattage for solar panels. Please read on …

Questions:

  • 1). Can I add up tp 2,400 watts of solar total to (each) EP500Pro? If yes;

  • 2). When the (2) EP500pros are connected to the fusion box, Do I (can I) ADD up tp 2,400 watts to each one of the PV (inlets) in other words, a maximum of 2,400 watts in each of the EP500pros PV inlets? OR;

  • 3). Can I add 4,400 watts to only one of (master/slave) EP500pro when connected to the fusion box?

  • 4). Is there another way or a better way?

FYI: I saw this: Solar Kit and it got me thinking. The kit includes panels that equal 4,020 watts. When I call them on how to hook them up to the EP500pro they said I have to refer to my owner’s manual; hence why I am reaching out here - no such topic in the manual. Moreover, I can not find one image showing solar being connected to an EP500 (pro or otherwise) when using the Fusion box configuration :frowning:

I am seeking clarity and can not find any answers. Any advice or direction would be of the utmost appreciated.

Thank yoU!

I do not have this unit but it would seem to me that you would hook up solar to each EP500 individually. That just makes more sense, or at least it would seem the safest bet. It also makes it more difficult than just one connector. Its kind of lame that the people that are selling the unit shown in the link wont commit to an answer. Its a pretty fair question and makes sense that you would ask it. the outputs are being shared by the fusion box but I suspect the charging circuits (inputs) are still independent and its likely that if only one side saw greater than the max input it would just limit it. For it to charge from only one side with both units connected to the fusion box would mean that the unit without solar connected would charge backwards through the fusion box.

I agree with your thoughts, I am thinking those lines too. Thank you for your reply. I would feel better before hooking my system up if someone from Blueitti or anyone that has this configuration could provide guidance as well.

If you already have solar available you can prove it by hooking it up to just one unit with the fusion box connected and see if the other side charges.

That would be a great experiment, and that seems like something I would do/try. :grinning: However, I have everything except for the solar panels. I am looking to buy and want to maximize the solar input. I would rather not have to “experiment” on something that should be found in some sort of documentation by Bluetti or at least someone with first-hand experience with the system that I currently own and described here. I do appreciate your comments, thank yoU!

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UPDATE: I received an email reply to my questions from The Bluetti Team. The answers for the most part have solved my quandary. I have cut and pasted that reply in its entirety for everyone to review. If anyone has anything more to add or suggest please by all means. Thank you!

My answer:

Hi Jeff,

Thank you for your reaching out to us.
Sorry for the late reply.
Let me help you answer your questions:
1). Can I add up tp 2,400 watts of solar total to (each) EP500Pro? If yes;
Answer: Yes!
2). When the (2) EP500pros are connected to the fusion box, Do I (can I) ADD up tp 2,400 watts to each one of the PV (inlets) in other words, a maximum of 2,400 watts in each of the EP500pros PV inlets?
Answer: DC1 and DC2 can support a maximum of 2400W respectively, a total of DC1 + DC2 = 2400 + 2400 = 4800W
Warm tip: Using solar panels to charge the machine, you need to meet the open circuit voltage range of the machine: 12-150V, can not exceed this voltage range.

3). Can I add 4,400 watts to only one of (master/slave) EP500pro when connected to the fusion box?
Answer: Yes, but it is important to understand that if a solar panel is used to power one of them, only that one will be charging and the other one will not.
Warm tip: When connecting Fusion Box to charge the machine, you can only use DC to charge the machine, if you want to charge the machine with AC, you need to have another cable to support charging with AC, as shown in the figure:

Hope my answer is helpful to you.
If you need any help, please feel free to contact us.
Thank you for your support and trust.
Hope you are doing well.

Kind regards,
Ashley
The Bluetti Team

Glad to hear you have your answers. To maximize solar charging your going to have 2 separate connections and strings of panels. Not the best option but easily doable.

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I have 2 500s (NOT a pro) connected with a fusion box providing 240 volts.
I have 6 Newpa 200 watt panels connected to the solar input Of Each battery. A total of 2400 split between the two!
If you connect solar to one battery, that battery will charge but only that battery.
Hope that helps

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That does help!

I also received this from Mike Su (Bluetti After-sales Engineer) answers to my questions above:

1, Yes.
2, Master Max input power 12002, slave Max input power 12002
3, Master & slave can be charged separately or at the same time with 12002.*

I am assuming that 12002 is 2400. Why they don’t say 2400 is beyond me. I have the Pro version so my max which I believe (12002) is 2400 watts.

:grinning: