LittleBear
New Member
Hello... first post here but looking forward to getting to know you all!
I am wondering if there is a good resource which I can go to to learn about the BMS and App Readings which my new Lithium Ion batteries are generating. I have recently purchased 2 LiFiPO4 batteries, each with 8 cells totaling 24V and 10kW. The BMS on the batteries is JBD, and I am using either the OverKill Solar App (iOS) or the XiaoXiangBMS (iOS) or XiaoXiangElectric.
My problem here is trying to understand the readings which they are generating. I am attaching a screen shot from one of the batteries and using the XiaoXiangBMS. Note that all Apps read identical.
What I am trying to figure out is the SoC, and ultimately how long my batteries have to run my cabin. The App is showing the battery voltage as 26.67V which based upon SoC graphs online would suggest that this is almost 90% charged, yet the %age is reading 49%, which is the 197 / 400 Ah. Is there an easy rationale as to what the difference is? Is this battery actually fully charged? What do I need to do to get the battery fully charged?
Also, to complicate things even more, the following is the reading taken from the second battery, on a different date, but demonstrating the same problem I have:
Again using the voltage as an indication of SoC, this would suggest between 80% and 90%, yet the %age is again showing 49%, with the 281 / 640 Ah. The two batteries are identical yet they have different Ah readings. I have tried looking online for resources and material which can help me work through this but am not having any luck.
I appreciate this comprises several different issues but if someone can guide me to troubleshoot the initial one, then everything else may fall in to place.
A final question to you all would be which App do you find the best to use (I have iOS): Overkill Solar, XiaoxiangBMS or XiaoXiangElectric.
Thanks in advance for any pointers here and appreciate the feedback.
Stewart.
I am wondering if there is a good resource which I can go to to learn about the BMS and App Readings which my new Lithium Ion batteries are generating. I have recently purchased 2 LiFiPO4 batteries, each with 8 cells totaling 24V and 10kW. The BMS on the batteries is JBD, and I am using either the OverKill Solar App (iOS) or the XiaoXiangBMS (iOS) or XiaoXiangElectric.
My problem here is trying to understand the readings which they are generating. I am attaching a screen shot from one of the batteries and using the XiaoXiangBMS. Note that all Apps read identical.
What I am trying to figure out is the SoC, and ultimately how long my batteries have to run my cabin. The App is showing the battery voltage as 26.67V which based upon SoC graphs online would suggest that this is almost 90% charged, yet the %age is reading 49%, which is the 197 / 400 Ah. Is there an easy rationale as to what the difference is? Is this battery actually fully charged? What do I need to do to get the battery fully charged?
Also, to complicate things even more, the following is the reading taken from the second battery, on a different date, but demonstrating the same problem I have:
Again using the voltage as an indication of SoC, this would suggest between 80% and 90%, yet the %age is again showing 49%, with the 281 / 640 Ah. The two batteries are identical yet they have different Ah readings. I have tried looking online for resources and material which can help me work through this but am not having any luck.
I appreciate this comprises several different issues but if someone can guide me to troubleshoot the initial one, then everything else may fall in to place.
A final question to you all would be which App do you find the best to use (I have iOS): Overkill Solar, XiaoxiangBMS or XiaoXiangElectric.
Thanks in advance for any pointers here and appreciate the feedback.
Stewart.