Hello helpful people,

 

I'm very new here, but having trouble connecting my battery to my inverter and have tried everything I know of to get it done. Any advice or assistance would be greatly appreciated.

 

The inverter is an ECCO 5.5kW (the non parallel version, which I think is just one of the voltronics rebranded ones) https://solarwarehousesa.com/products/hybrid-inverter-48v-5-5-kva-5500w-mppt-100a-inverter-pure-sine-wave-ecco-wifi?_pos=8&_sid=6363d9f2b&_ss=r

The battery is a SVOLT 48V 5.09kWh: https://solarwarehousesa.com/products/svolt-51-2v-106ah-5-42-kwh-a-grade-wall-mount-lithium-battery

The Inverter has a RS485 and RS232 connector (which is connected to the wifi module), and the Battery has RS485A, RS232, CAN and 2xRS485B ports.

I've tried every combination of the RS485 on the inverter to the battery ports, and even wired a cable to the RS485A and B ports (pins 1&8 went to RS485B port and 2&7 to the RS485A port, to the RS485 port on the inverter) and still no luck. I've tried the Li2 (PYLONTECH) and Li4 modes with all the combinations and I still just get error 19 - no connection to BMS. The cable was a bit of an abomination, but I continuity tested the pinout and it was working as spec'd.

Am I doing something wrong, can the inverter just not communicate with the battery, or is the battery the issue? I've scoured the manuals for both the battery and the inverter, but they aren't that much help. It should just work (TM).

The inverter runs fine with the User mode setting the Charge voltage at 54.0V and float at 51.0V (not sure if these are even 100% right), but I'd prefer if I can get the BMS properly set up.

As far as I understand, the protocols are all pretty standard so I'm not sure what the issue is. Anyone with some experience in this that can give some help? Thanks in advance

Edited September 11, 20231 yr by danieldonaldson

I'm running almost the same system but with the 5.5kw Parallel and SVOLT 48V battery. Must say I'm impressed with the battery for the price. Anyway, mine works perfectly on Li2 setting with cable connected to RS485A on battery. Dip switch 1 should be up on battery. Cant see how your can be much different. 

Tried that too!

Thanks Ruan, let me try that again - can't see why it would be any different

 

Hello helpful people,

 

I'm very new here, but having trouble connecting my battery to my inverter and have tried everything I know of to get it done. Any advice or assistance would be greatly appreciated.

 

The inverter is an ECCO 5.5kW (the non parallel version, which I think is just one of the voltronics rebranded ones) https://solarwarehousesa.com/products/hybrid-inverter-48v-5-5-kva-5500w-mppt-100a-inverter-pure-sine-wave-ecco-wifi?_pos=8&_sid=6363d9f2b&_ss=r

The battery is a SVOLT 48V 5.09kWh: https://solarwarehousesa.com/products/svolt-51-2v-106ah-5-42-kwh-a-grade-wall-mount-lithium-battery

The Inverter has a RS485 and RS232 connector (which is connected to the wifi module), and the Battery has RS485A, RS232, CAN and 2xRS485B ports.

I've tried every combination of the RS485 on the inverter to the battery ports, and even wired a cable to the RS485A and B ports (pins 1&8 went to RS485B port and 2&7 to the RS485A port, to the RS485 port on the inverter) and still no luck. I've tried the Li2 (PYLONTECH) and Li4 modes with all the combinations and I still just get error 19 - no connection to BMS. The cable was a bit of an abomination, but I continuity tested the pinout and it was working as spec'd.

Am I doing something wrong, can the inverter just not communicate with the battery, or is the battery the issue? I've scoured the manuals for both the battery and the inverter, but they aren't that much help. It should just work (TM).

The inverter runs fine with the User mode setting the Charge voltage at 54.0V and float at 51.0V (not sure if these are even 100% right), but I'd prefer if I can get the BMS properly set up.

As far as I understand, the protocols are all pretty standard so I'm not sure what the issue is. Anyone with some experience in this that can give some help? Thanks in advance

Did you ever come right with this? Looking at the exact same setup and seems it comes with a decent warranty so it is tempting.

Any other odd things with this setup? Is it noisy/weird noises?

When on a budget and still want someting decent, it is a hard road to walk. lol

It's not noisy at all. Got some pretty good fans, and filters at the top. The install was pretty easy, and with float at 51.2V, batteries are sitting at 99.9%. 5 year warranty on both is pretty great though yeag.

The wifi connection is pretty cool and shows you everything you need

Haven't gotten the inverter and battery to talk yet. Going to try login to the BMS to see if I can find anything but that's going to require me to crimp some cables etc. so not quite there yet

 

It's not noisy at all. Got some pretty good fans, and filters at the top. The install was pretty easy, and with float at 51.2V, batteries are sitting at 99.9%. 5 year warranty on both is pretty great though yeag.

The wifi connection is pretty cool and shows you everything you need

Haven't gotten the inverter and battery to talk yet. Going to try login to the BMS to see if I can find anything but that's going to require me to crimp some cables etc. so not quite there yet

Do me a favor, PM me some pics of the connector. I kinda import things every week out of China so can maybe grip a bunch of extra connectors so that you can cut and destroy the replacement cables. Still learning a lot about this space and this is tempting but don't want too much problems. Is it still charging and functional the way it is currently? Balanced?

Hi, Please can someone share the link to ECCO support group on WhatsApp. Thanks!

Hello, I need some help please! I have a backup system ECCO 5.5KW with a SVOLT 5.43KWH battery just for only 2 weeks. The BMS is communicating with the inverter (under LI2 - Pylontech). All seems to be working well - the battery was staying at SOC= 99% until 3-4 days ago when I noticed that the battery went to 98%. Then after a day went to 97% and now it is at 96%. Yet it is permanently connected to the grid. One other thing I noticed is that despite the SOC goes down as percentage, the battery voltage stays at 56v.
What could cause the SOC percentage to drop like that while the battery voltage stays at 56v- could it be that the bms is doing some equalizing of the voltage cells and some recalibration.. Or is it the worst- faulty cell? Thank you!

Having same problem Donaldson, 

Was your problem resolved, please share.

 resolution.

Regards,

often.