ZA Moose

Not going to repeat what everyone else has already said, but to be clear sun4safe.com IS A SCAM!!!

These guys sun4safe.com are 100% a SCAM. I went to their registered address after I told them I'm not EFT'ing them a cent until I see what I'm buying. I went to the registered office address and they don't exist, nor is there a tenant record. It's now clear why they don't talk credit card transaction and want you to EFT. Buyer be warned, you will get ripped off.

Same issue on Deye 12Kw 3phase. Select correct time zone and disable sync on solarman

Plwased to report i have upgraded the firmware on the greenrich batteries and the system is functioning 100% normal as it should. Battries are now static /stanby mode when fully charged. No more charge/discharge loop. Thanks for all the input and advice everyone.

So it turns out that this issue is actually a BMS firmware problem. I will update the firmware an post the results in the next few days

I agree it's completely weird.. I have recorded a couple of short clips which I have uploaded to you tube to accurately convey what happens when you setup the batteries as lithium vs % or voltage. % or voltage looks like completely normal functioning, however they register as lead acid which they are not. I assume setting them this way bypasses the BMS? See links below. Appreciate all the wisdom gained and shared here. Voltage or % mode https://youtube.com/shorts/ATPQApg15OI?feature=share Lithium mode https://youtu.be/5utuTnG-lCA

Thanks for all the advice and feedback. I do not have any solar installed yet, This is just a straight up backup power system at this stage. I have spoken to the supplier and they are going to check the battery firmware version for an update and see form there. Funnily enough, I just noticed that my inverter seems to be pushing power back to the grid! Can this be due to the CT clamps being the wrong way around ? Where should they point ? Inverter or utility ? Seems to be mixed options on this... My SOC is sitting at 100%, but battery status is discharging. Really weird..

So here's something quite interesting that leads me back to the BMS. If I configure the system to use "Lithium" under the battery settings tab, and set the battery parameters. The inverter obviously reads from the BMS and the batteries stay in a constant charge/discharge state. If I set the battery configuration as % or use Voltage, the batteries stay static/standby state when fully charged and only discharge when grid is down, and recharge when it returns. I am assuming that when using % or voltage, the BMS is completly bypassed ? The million dollar question here is - If I used different batteries with a different BMS algorithm; would I see the same result (charge/discharge) ? I don't like the batteries charging/discharging constantly. I think it uses more power and must have some effect on battery lifespan. Any further comments or advice are appreciated.

Thanks for taking the time to respond. Much appreciated. What you have said makes perfect sense. My takeaway here is that inverter behavior is governed by the specific BMS of the battery ? Do you have any explanation for why I have previously seen the batteries in static/standby state after after the Deye firmware upgrade ? (this lasted 1 day) Is it not bad for batteries to constantly charge/discharge 100-99,99-100 ? Thank you, Brett

Hi everyone I have recently installed a deye 12kw 3phase hybrid inverter with 3x greenrich 4.96kwh batteries. My understanding is that when the batteries are fully charged, they should go into a static or standby state until they are required to work. What i have noticed is that the batteries are in a constant state of charge and discharge. 100-99 and 99-100 , constantly. It looks like the grid is feeding the batteries, pauses while the batteries discharge slightly, and then grid resumes to charge the batteries again. Everything is properly setup and works perfectly during loadshedding. Deye did login from China and upgraded the firmware, and the batteries were in standby mode for 1 day before this issue returned again. I'm just concerned that this charge/discharge issue is bad for the batteries and my electricity bill. I would hugely appreciate any feedback or advice on this issue. Thank you