Please read the deep dive review article about the DeltaPRO if you haven’t done yet HERE.
Want to know how the Delta PRO performed after more than 6 months of continuous use? Read the detailed article HERE.
Firmware .85 was released on the 14th of May 2022 with the following fixes:
- Support power station grounding adapter.
- Fix for the remote control to stay on more than 1 minute when connected via network cable to the DP.
This time the update showed inside the DeltaPRO settings and wasn’t as chaotic as previous one but I had to launch the update twice as the first time it ended abruptly at the 82% mark and the DeltaPRO didn’t feel right so I waited patiently until the update dot showed up again and this time it told me to update from 126.96.36.199 to 188.8.131.52… I did that and thankfully this time it completed correctly. The whole process took around 23 minutes. I hope Ecoflow continue to polish the update process to a point where you don’t have to babysit and wonder if everything went well.
As with the previous update, thanks to my “DeltaPRO Data Insight” program, I was able to check that once the new firmware is correctly uploaded and flashed, the DeltaPRO resets it’s (estimated) capacity to exactly 3648W.
This time around I can confirm that the DeltaPRO remote control is finally behaving as it should have but with a caveat; The remote will MIRROR exactly the DeltaPRO in everything so if the DeltaPRO LCD is on, the remote LCD is on, if the DeltaPRO LCD is off the remote LCD will turn off. There’s no way to have the DeltaPRO LCD off and keep the remote LCD on (quick press the power button on the DeltaPRO, LCD turns off then go to the remote and press the remote on/off small button; the remote will turn on for a second and then turn off). I was hoping to keep the DeltaPRO LCD off while the remote is always on but… I’ll take what I can get and call it a day.
I don’t have the means to test the other fix mentioned in this update so hopefully someone else will.
Keep an eye here as I continue to update the article with my findings as soon as I’m finished testing as some tests take many hours to complete.
Current testing checklist:
- The below 40W bug is not fixed; when the input goes below 40W it won’t get reported by the DP even if it is still being used.
- The MPPT controller still has the same issues as before so nothing has changed.
- When reaching 100% charge via MPPT, the cell-balance is still out of whack compared to < .74 FW and the constant charge-discharge cycle bug of the MPPT/SOC controllers doesn’t help at all.
- As with previous version, the DeltaPRO will no longer charge to full capacity. It will loose around 5% of usable capacity and as mentioned above, once it reaches 100% it will enter an endless charge-discharge cycle. With FW < .74 the DeltaPRO would reach 3.684W/52.80V which is it’s full declared capacity. I know that for a fact because when you update the FW, the SOC resets all values and by default it will show 3.648W of total capacity (via my own program that exposes all the internal data of the DP).
- Another issue I’ve noticed is that when charging from MPPT, if you’re close to 100% full charge, the algorithms don’t reduce the charge rate at all so you will jump instantly from 95% to 99% as now the cutoff voltage is reduced to 52V from 52.80V. The logical thing to do is to reduce the rate of charge as you approximate 100% by lowering it until you reach the “trickle charge”.
- The DeltaPRO SoC capacity algorithms are still the same bad ones as with .74 and a lot worse than < 74 FW.
- If you try the trick to make the MPPT controller disengage and stop charging the DeltaPRO once it reaches 100% (to try and stop the constant charge-discharge-charge bug) via app by setting a “charge level” to 95% and once the DeltaPRO is below 100%, change back the “charge level” setting to 100%, the mppt controller will not charge or will take a very long time to engage and start charging again.
- The MPPT controller has another issue where it will freak out and underperform by as much as 50%; Stable production at around 80V and 600W before freak-out, then all of a sudden the controller will reset and lock itself < 40V with very high Amps, so high that the arrays can’t deliver and watts dip below 300W. Only way to fix this is to disconnect the solar arrays, wait 30 seconds, reconnect and pray that the mppt controller will latch on again with proper values. If not then rinse and repeat until it works…. 🙁
All in all, the only real fix (of sorts) is the DeltaPRO remote that now stays on as expected.
My biggest grief is with the appalling state of the MPPT controller with it’s multiple bugs and problems… it is BROKEN and SERIOUSLY NEEDS some love from Ecoflow engineers to make it work as intended in a system that is relied upon 24/7.
(I’ve been fighting for the last 15 minutes to make the MPPT controller engage and actually use the power of the sun instead of draining the battery but it won’t budge… extremely frustrating to put it mildly…)
I hope Ecoflow will keep pumping out better firmwares and improve all of the DeltaPRO issues and as always I’ve offered my help countless times.
14/06/2022: DO NOT UPDATE TO .85 and if you have already updated to .85 then DO NOT RUN YOUR DeltaPRO in EPS/UPS/PASSTHROUGH mode or you risk seeing “error 121” and then killing your DeltaPRO. Me?… oh well, like countless others I’m patiently waiting for my replacement DeltaPRO…
17/06/2022: It’s been 8 days since the DeltaPRO blew up and my replacement is STILL in Germany at the shipping company! The EARLIEST I can hope for is next Tuesday so a total of almost TWO WEEKS DOWNTIME!!!!!!!! The shipping company is HELLMANN and it is now the WORST I have dealt with.
Funny thing is that UPS picked up my broken DeltaPRO and in less than 24 hours it is already in Frankfurt/Germany! Why send the broken DeltaPRO with such premium fast shipper and the replacement one with worst/cheapest/slowest shipper ever!?
Have I made a big mistake?! My faith in Ecoflow is in freefall…