Conductor570
New Member
Hello. I am a beginner in the solar community and this is my first forum post. Please forgive any mistakes here.
I recently built a basic 24 volt emergency back-up system using two 100ah lifepo4 batteries in series with a 2000 watt pure sine inverter. I balanced the batteries as recommended prior to connecting them in series. Both batteries read 13.37 volts when connected. I have since done a test run connecting the system to my home chest freezer. My batteries have internal bms and each battery has it's own status display integrated on the battery from the factory so I did not connect a shunt to this system. Here is my issue.
I checked the status of each battery periodically while it was running my freezer and noted that one battery was discharging faster than the other. After several hours, I unplugged the freezer and checked the status. One battery was at a 77% and the other shows 65%. Is it normal for batteries connected in series to discharge at different rates?. And if not, will this be an issue with the batteries when charging them?
Thank you in advance for any replies to this question.
I recently built a basic 24 volt emergency back-up system using two 100ah lifepo4 batteries in series with a 2000 watt pure sine inverter. I balanced the batteries as recommended prior to connecting them in series. Both batteries read 13.37 volts when connected. I have since done a test run connecting the system to my home chest freezer. My batteries have internal bms and each battery has it's own status display integrated on the battery from the factory so I did not connect a shunt to this system. Here is my issue.
I checked the status of each battery periodically while it was running my freezer and noted that one battery was discharging faster than the other. After several hours, I unplugged the freezer and checked the status. One battery was at a 77% and the other shows 65%. Is it normal for batteries connected in series to discharge at different rates?. And if not, will this be an issue with the batteries when charging them?
Thank you in advance for any replies to this question.