I noticed a “fusion box” concept that allows one to connect multiple power stations to the same single-phase grid. I see solutions for EP500/AC300/AC500 (you can connect 2 of the mentioned stations to achieve “doubled” output power) and built-in fusion capabilities in EP800/EP900/EP2000 (for the EP2000, you can even fuse 3 of them).
I wonder if I can fuse 2 EP760s so they work in parallel with balanced output current? Is there anything I can do on my own if there are no out-of-the-box solutions? Would appreciate any advice!
Bluetti Application Scenarios presentation from 2024 includes a parallel scenario. It shows both EP760 Link Port1 connected to EMS Box (probably same EMS box used for EP900) and then EMS is connected to ADL200N-CT (Meter & CT). Up to 8 x B500 batteries (39.68kwH). However, EP760 installation manual does not mention parallel operation. I am not sure if Bluetti officially support this or if it was just an early idea. Hopefully @BLUETTI_CARE can confirm ? Back in 2024 a single EP760 supported maximum 4 x B500. Now in 2026, at least in Australia, a single EP760 can support 8 x B500 which may mean parallel mode is not needed ?
Thank you for your highly insightful answer, @dmc! The point here is that, by coincidence, I have 2 EP760s, so the need to fuse them is vital there. What you provided gives me great hope that I can use the EMS Box there. @BLUETTI_CARE@BLUETTI would appreciate your extra confirmation!
Hi @bluetti_shadowgundevelopergmailcom, thank you for your interest in our products.
We have confirmed with our engineers that unfortunately, the EP760 does not support parallel operation.
Thanks to @dmc for the concern and explanation.
@dmc In that context I would personally take it to mean parallel operation at the same time as the grid (i.e. that you can supply house loads from the grid and the battery simultaneously), not that two units can parallel together; and given the response from Bluetti I’m guessing that’s how they intended it too.
Edit: but you’re right, it’s not really clear enough.
Sourcing power from grid at same time as battery is a basic function of most home batteries, for example AC passthru once battery SOC falls blow SOC Low value. I would not expect any special scenario for grid+battery. I think from the slides Bluetti were advertising two EP760 in parallel mode, but why they say it is now unsupported is a mystery ? Did they find a bug or issue that cannot be resolved ? I would hope @BLUETTI_CARE has answer to clarify.
Sorry I overlooked your slide above! Maybe its only available in less strict jurisdictions where they don’t care about backfeeding the grid in a grid down situation… but then again, support seems to be good at saying “not possible” when they’ve just misunderstood the question… or else the marketing material was generated by someone who didn’t actually know the limitations of specific products, which sadly seems to be common with older Bluetti units.
Hi @dmc, thank you for your continued attention to this issue. Our original design intended to support parallel operation for the EP760. However, during later practical testing, we determined that the conditions were not yet mature and the market demand was low, so we did not officially launch this feature.
We have also passed your feedback on to our technical team.
I personally own 2 EP760, and in Ukraine, most private apartments are supplied with a single-phase grid. Before that, I bought an EP2000 to replace my existing EP760 since I was assured by one of the local suppliers that it was single-phase grid-compatible. Then it turned out EP2000 is only 3-phase grid-compatible: How to connect EP2000 to a single-phase grid input. The supplier kindly exchanged the EP2000 for the EP760, so I now own 2 stations.
The rationale for having EP760 working together is simple: the whole household is electricity-dependent, so during a power outage, it is essential to have greater power potential rather than lower, along with sufficient battery capacity. Of course, the simplest option is to connect all the batteries to a single EP760 inverter. Still, I would greatly appreciate a simple solution to use 2 inverters in parallel to provide higher power output.
Hi Oleh, thank you for sharing your experience and needs with the EP760.
We have passed them on to our R&D team, and they will take your ideas into consideration, as this will also benefit other EP760 users.
