Hello,
I currently have ~14 kwh of 18650s in 10 packs of 7s20p configurations. Each pack has a BMS. I am charging these to a max of 28 volts and discharging to 23.5 volts. These are being charged by 4.4 kw of solar panels.
I am trying to determine if I could add LiPO4 cells to the storage setup in an 8s or 9s configuration. The cells have a 3.65 max voltage and 3.2 nominal voltage, cutoff voltage of 2.5v. In 8s max charge would be 28.8 volts and cut off would be 20v. It seems like these could operate in the voltages of my current system.
Is this a valid approach? Am I missing something?
I currently have ~14 kwh of 18650s in 10 packs of 7s20p configurations. Each pack has a BMS. I am charging these to a max of 28 volts and discharging to 23.5 volts. These are being charged by 4.4 kw of solar panels.
I am trying to determine if I could add LiPO4 cells to the storage setup in an 8s or 9s configuration. The cells have a 3.65 max voltage and 3.2 nominal voltage, cutoff voltage of 2.5v. In 8s max charge would be 28.8 volts and cut off would be 20v. It seems like these could operate in the voltages of my current system.
Is this a valid approach? Am I missing something?