JAK

I've switched over to voltage mode tonight and will be keeping a close eye on the charts, will then post my findings. PS. When referring to battery capacity, please remember that stored energy is measured in kWh, not kW (apologies, it's my engineering OCD... 🫢)

Electrically there is no difference between the two diagrams.

Fully agree. I'm also not willing to accept inferior performance after paying R30k+ for an item. Will post once I've made some progress with convincing the supplier to take the CFE back...

Same here: 1416802xxx

Sorry, I only have one...

@TheMafiaMan - NotMuffinMan, my understanding of @HendrikBigChief's post is that you're making changes to how the inverter interprets battery SOC. By no means will the inverter disable the battery BMS! So even when the bat-inverter interface is set to voltage mode, the BMS will still continue to do its thing (which in the case of the CFE appears to be shoddy...). No LFP battery should ever be operated without a BMS. It's however not clear to me what the difference in lifetime of an LFP battery will be when operated with an inverter in voltage mode as opposed to BMS mode.

Hi I also like the wall bracket that can hang two CFEs vertically, but I'd much rather have a robust / reliable BAT+BMS combo than worry about mounting and space issues! Do you know whether the Sunsynk batteries also come from the Deye factory (like the Sunsynk inverters do)? And whether the Deye warranty extension will apply if you add a Sunsynk battery to a Deye inverter? PS. I see that my installer/supplier doesn't list CFE batteries anymore... I suppose they simply stock whatever they can lay their hands on at any given point in time. PS 2. I'd love to build my own battery some day when I'm grown up 😉 PS 3. Thanks for the fire extinguisher reminder! I've recently seen a video of a LiIon fire on an electric scooter, quite scary.

Hi Thanks for this comprehensive sharing of your pain... I have a 5KW Deye + CFE-5100 installation since Nov 2022 (panels to be added coming week). Much the same battery experience. After a lot of to-and-fro with the installer/supplier and several FW updates I was still miffed with the performance (any load beyond ~45% SOC causes battery to drop out, and then charges from 0% to 70% and then jumps to 100%). Eventually the installer swapped out the battery with a new CFE-5100. Now the same issues are resurfacing. Plus I often get the very annoying "F56 DC_VoltLow_Fault" error message on the Deye with a high load on and SOC < 40%. I fully agree that the BMS is super bad. I will have to attempt to convince the installer to replace the battery with another brand... Do you have an opinion on Greenrich, Dyness, Shoto brands? I see they also have a 5.32kWh Sunsynk in stock for R47k...