Marcello with 2 Ls
New Member
Hi folks,
My two EG4 batteries are often way out of sync in terms of charge. Does anyone know why?
Example: Right now, battery 1 is 76% full, while battery 2 is 85% full. If battery 1 gets too low, it will trip the inverter into grid-bypass mode, even when Battery 2 has plenty of power.
They charge and discharge at varying rates (no logic) and I don't understand why the BMS doesn't try to equalize them.
I'm using the built-in BUS on battery 1 to connect to both the Growatt 12k inverter AND battery 2. The cables are short (<3ft), and similarly sized.
![IMG_4911.JPG IMG_4911.JPG](https://diysolarforum.com/data/attachments/229/229384-4499c3021335fa7c2e1d0f628bc99972.jpg)
My two EG4 batteries are often way out of sync in terms of charge. Does anyone know why?
Example: Right now, battery 1 is 76% full, while battery 2 is 85% full. If battery 1 gets too low, it will trip the inverter into grid-bypass mode, even when Battery 2 has plenty of power.
They charge and discharge at varying rates (no logic) and I don't understand why the BMS doesn't try to equalize them.
I'm using the built-in BUS on battery 1 to connect to both the Growatt 12k inverter AND battery 2. The cables are short (<3ft), and similarly sized.
![IMG_4911.JPG IMG_4911.JPG](https://diysolarforum.com/data/attachments/229/229384-4499c3021335fa7c2e1d0f628bc99972.jpg)