ysfsuleman Posted June 1, 2023 Share Posted June 1, 2023 Hi Everyone, As mentioned in the title, I've got 5kva Synsynk Inverter connected to a BSL 51.2v LI Battery. The person installed the system for me is AWOL and I'm unable to get him to come and fix an issue I'm experiencing. Basically my Battery shuts downs at the percentage it's meant to reset (35%) and doesn't come back on until I have power again, and then when the power does come back, it takes about an hour to start charging, and according to the LED's on the battery and the Sunsynk app it starts charging from 0%. The battery also takes very long to startup after I manually shutdown the inverter and battery of I need to save the battery power for later. Yesterday we had a power outage after load-shedding that lasted about 20 hours, as I work from home, I manually switched off the inverter at battery, to save power so I could work today in case the power wasn't restores, when I switched of the battery it was at 47%, I switched everything back on again at 1am when the power came back, but the battery took over before it started showing any sign of power, but when it did start the level was still at 47%. Can anybody running the same system possibly send me their settings so I can compare to see if the setting I have are correct, or someone that has expertise advise me on what I can do. I currently don't have any solar panels connected to my inverter if that makes any difference. I've attached pics of my battery for reference as well as my battery settings, please let me know if there's any other info than will help identify the issue. Quote Link to comment Share on other sites More sharing options...
Nexuss Posted June 1, 2023 Share Posted June 1, 2023 On the battery setup page untick "BMS_Err_Stop". ysfsuleman 1 Quote Link to comment Share on other sites More sharing options...
ysfsuleman Posted June 1, 2023 Author Share Posted June 1, 2023 @Nexuss everything else looking fine in terms of the 'Batt charge' and 'Batt type' settings? Quote Link to comment Share on other sites More sharing options...
Nexuss Posted June 1, 2023 Share Posted June 1, 2023 1 hour ago, ysfsuleman said: @Nexuss everything else looking fine in terms of the 'Batt charge' and 'Batt type' settings? You can set your discharge amps to 100A as its only on 90A . Share some pictures of your System mode screen .Are you charging the battery full regularly? P1000 1 Quote Link to comment Share on other sites More sharing options...
ysfsuleman Posted June 1, 2023 Author Share Posted June 1, 2023 I will later. We having some Eskom maintenance done in our area at the moment and my inverter/battery just died at around 43%. It charges fully everyday between loadshedding. Quote Link to comment Share on other sites More sharing options...
ysfsuleman Posted June 1, 2023 Author Share Posted June 1, 2023 So power was just restored now. Inverter is powered but only AC LED is on. Quote Link to comment Share on other sites More sharing options...
ysfsuleman Posted June 1, 2023 Author Share Posted June 1, 2023 (edited) System mode screens. Also giving me an error saying: F25 Grid wake up failed And it looks like there was another fault just before it switched off earlier: F56 DC VoltLow Fault Edited June 1, 2023 by ysfsuleman Additional info Quote Link to comment Share on other sites More sharing options...
P1000 Posted June 1, 2023 Share Posted June 1, 2023 You should charge it to 100%, otherwise the SoC will drift and cells could go out of balance, causing issues like the one you are experiencing. WannabeSolarSparky, spotity, ysfsuleman and 1 other 3 1 Quote Link to comment Share on other sites More sharing options...
ysfsuleman Posted June 4, 2023 Author Share Posted June 4, 2023 Hi guys, just want to thank everyone for all the advice I recieved, my battery seems to be working perfectly now. Quote Link to comment Share on other sites More sharing options...
TimCam Posted June 4, 2023 Share Posted June 4, 2023 (edited) Your Float, Absorption, and Equalization Voltages seem a bit high. Try:- Float = 54.8V, Absorption = 55V, and Equalization = 54.9V I see the Recommended Charge Current = 50A, Recommended Charge Voltage = 55V, Max Charge Current = 80A, Max Continuous Discharge Current = 90A. Always good to be kind to your batteries if possible. Taken from:- https://www.victronenergy.com/live/_media/battery_compatibility:victron_bsl_manual_-_2021-04-14.pdf Edited June 4, 2023 by TimCam Quote Link to comment Share on other sites More sharing options...
Nexuss Posted June 5, 2023 Share Posted June 5, 2023 6 hours ago, TimCam said: Your Float, Absorption, and Equalization Voltages seem a bit high. Try:- Float = 54.8V, Absorption = 55V, and Equalization = 54.9V He is using BMS comms so those values mean nothing . ysfsuleman 1 Quote Link to comment Share on other sites More sharing options...
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