HeikoHabig
New Member
Hello to Everybody.
Let me dive right in.
I purchased a Growatt 12kW 48 V 250 VDC 120 A Off Grid Inverter, i also purchased a Battery 48 Volt Kong 12kWh 233Ah, i did this because we had last year a bad Ice Storm here in Texas where i ended up with no Power for 5 days, pipes froze up and i lost also some animals, anyway not being in that situation again i purchased that setup with also extending to Solar and a Diesel backup Generator down the road.
Anyway i did install the Inverter and wired the AC In @ 220 Volt L1 and L2 and Gnd, then connected the Inverters Battery cables, but also using a resistor prior to charge the Cap before fully connection, i switched on the Inverter and all was looking good, Battery was at a Charge of 15% at this point, the Inverter started to charge the Battery at a rate of 30 Amps, all looked good, i spent about 25 minutes just watching the system get charged, i left to run some arrans and when i came back the system was off, all of it, i could not restart the system, i made sure the AC In was good, which i measured , the battery voltage on the inverter connection read 52 Volts, but still no sign of life, i contacted Support at Signature Solar, where i purchased the Inverter, it took them 2 days to email me back and telling me the Inverter will not start up if i have less than 60 Volt DC on the Battery, that's now where my confusion kicked in, cause it was charging for about 4 hours without error messages or issues, anyway i purchased a 48 Volt Lifepo charger and charged the Battery without the Inverter, she shows full charge now but reads only 53.95 Volts at 100% SOC. Now when i look at the overview of the cells individual, there is a huge imbalance , anyone any idea how to balance them back? Is there a hidden feature on the Kongs where one could access a Balance procedure? I have to say that im very disappointed in regards of the available Documentation for Growatt and BB, i built Industrial Controls for machines and this is something i don't like when there is so little info available.
I also have a COV code sitting now from the BMS , which i believe comes from one cell that is to high.
I will attach some pictures for reference.
Thanks everybody.
Let me dive right in.
I purchased a Growatt 12kW 48 V 250 VDC 120 A Off Grid Inverter, i also purchased a Battery 48 Volt Kong 12kWh 233Ah, i did this because we had last year a bad Ice Storm here in Texas where i ended up with no Power for 5 days, pipes froze up and i lost also some animals, anyway not being in that situation again i purchased that setup with also extending to Solar and a Diesel backup Generator down the road.
Anyway i did install the Inverter and wired the AC In @ 220 Volt L1 and L2 and Gnd, then connected the Inverters Battery cables, but also using a resistor prior to charge the Cap before fully connection, i switched on the Inverter and all was looking good, Battery was at a Charge of 15% at this point, the Inverter started to charge the Battery at a rate of 30 Amps, all looked good, i spent about 25 minutes just watching the system get charged, i left to run some arrans and when i came back the system was off, all of it, i could not restart the system, i made sure the AC In was good, which i measured , the battery voltage on the inverter connection read 52 Volts, but still no sign of life, i contacted Support at Signature Solar, where i purchased the Inverter, it took them 2 days to email me back and telling me the Inverter will not start up if i have less than 60 Volt DC on the Battery, that's now where my confusion kicked in, cause it was charging for about 4 hours without error messages or issues, anyway i purchased a 48 Volt Lifepo charger and charged the Battery without the Inverter, she shows full charge now but reads only 53.95 Volts at 100% SOC. Now when i look at the overview of the cells individual, there is a huge imbalance , anyone any idea how to balance them back? Is there a hidden feature on the Kongs where one could access a Balance procedure? I have to say that im very disappointed in regards of the available Documentation for Growatt and BB, i built Industrial Controls for machines and this is something i don't like when there is so little info available.
I also have a COV code sitting now from the BMS , which i believe comes from one cell that is to high.
I will attach some pictures for reference.
Thanks everybody.