Mr.Bean2
New Member
- Joined
- Nov 26, 2021
- Messages
- 9
Thank you for letting me join this forum. I have been impressed by the Youtube channel. I'm a Newbee in the LifePo4 world so bear with me if I ask stupid questions.
At the moment we have a quite traditional but well functioning setup in our boat: 24V and 220V board circuits. 24V house-battery bank of 2x3 200Ah AGM 8D batteries. Mastervolt charger 70A, Mastervolt inverter 3000W continouos, 150A alternators on main and auxilary engines, Northern Lights 16kW generator. Battery setups for engines and generator are totally separated from house bank.
2 Solar Frontier solar panels, total 340Wp that charge house-bank through Victron 35/150 MPPT.
As the AGM batteries are already quite old (>7 years) and I'd like to install much more solar panels (at least +3000Wp). I'm contemplating replacement of the AGM bank for a LifePo4 bank. In the same space as the 6 8D batteries I can store 64 3.2V 280Ah cells.
My plan is to:
- replace the present chargers and inverter for a much higher capacity (at least 200A charging and 8000W inverter capacity, probably with 2 Victron quattro units).
- organize the cells in 8 units of 8 parallel.
- install one 8S BMS that can handle at least 300A.
- install 10 350Wp extra solar panels through an extra Victron MPPT
My questions:
- what do you think of this? Any tips/tricks do's and don'ts?
- Is it OK to create the 8 units of 8 cells in parallel without any BMS and/or balancing device in the units?
- I would like a BMS 24V 8S of >300A with a separate charging connection (C-), not a common port. I cannot find any? Do you know of a quality BMS with these specs?
Hope to not have bored you silly with this long story and looking forward to some expert input!
Cheers, André
At the moment we have a quite traditional but well functioning setup in our boat: 24V and 220V board circuits. 24V house-battery bank of 2x3 200Ah AGM 8D batteries. Mastervolt charger 70A, Mastervolt inverter 3000W continouos, 150A alternators on main and auxilary engines, Northern Lights 16kW generator. Battery setups for engines and generator are totally separated from house bank.
2 Solar Frontier solar panels, total 340Wp that charge house-bank through Victron 35/150 MPPT.
As the AGM batteries are already quite old (>7 years) and I'd like to install much more solar panels (at least +3000Wp). I'm contemplating replacement of the AGM bank for a LifePo4 bank. In the same space as the 6 8D batteries I can store 64 3.2V 280Ah cells.
My plan is to:
- replace the present chargers and inverter for a much higher capacity (at least 200A charging and 8000W inverter capacity, probably with 2 Victron quattro units).
- organize the cells in 8 units of 8 parallel.
- install one 8S BMS that can handle at least 300A.
- install 10 350Wp extra solar panels through an extra Victron MPPT
My questions:
- what do you think of this? Any tips/tricks do's and don'ts?
- Is it OK to create the 8 units of 8 cells in parallel without any BMS and/or balancing device in the units?
- I would like a BMS 24V 8S of >300A with a separate charging connection (C-), not a common port. I cannot find any? Do you know of a quality BMS with these specs?
Hope to not have bored you silly with this long story and looking forward to some expert input!
Cheers, André