baipin
New Member
- Joined
- Dec 25, 2020
- Messages
- 68
Hello everyone,
I had planned on building a single (1) 2p4s battery with a single BMS, or (2) 1p4s batteries each with their own BMS, to double the amount of current I could draw for brief moments, through two BMS. These cells were all Lishen 272Ah, matched, grade A, new. So that's eight total 272Ah cells.
As luck would have it, I got the deal of a lifetime on four additional grade A, brand new cells... except they're EVE 280Ah. That means, I have a total of 12 cells; (4) 280Ah, (8) 272Ah. A 10kWh system would be nice, so I'd like to use all 12 cells in a single battery or bank of batteries; use these new cells alongside the 272Ah somehow. My question is, what would be the safest/most reliable/most cost-effective way to do this? At the moment, I have (2) 120A JBD 4s BMS's to work with (or maybe sell). The way I see it, these are my options:
I had planned on building a single (1) 2p4s battery with a single BMS, or (2) 1p4s batteries each with their own BMS, to double the amount of current I could draw for brief moments, through two BMS. These cells were all Lishen 272Ah, matched, grade A, new. So that's eight total 272Ah cells.
As luck would have it, I got the deal of a lifetime on four additional grade A, brand new cells... except they're EVE 280Ah. That means, I have a total of 12 cells; (4) 280Ah, (8) 272Ah. A 10kWh system would be nice, so I'd like to use all 12 cells in a single battery or bank of batteries; use these new cells alongside the 272Ah somehow. My question is, what would be the safest/most reliable/most cost-effective way to do this? At the moment, I have (2) 120A JBD 4s BMS's to work with (or maybe sell). The way I see it, these are my options:
- (1) Battery: (1) 3p4s battery made of (12) cells ((8) 272Ah cells + (4) 280Ah cells) with a BMS.
The battery bank comprises of 12 cells in 1 battery.
- (2) Batteries: (1) 2p4s battery made of (8) 272Ah cells, with a BMS + (1) 1p4s battery made of (4) 280Ah cells, with a BMS.
The battery bank comprises of 12 cells in 2 batteries. The 2 batteries are connected in parallel after each battery's BMS. One battery is 280Ah capacity, the other is 544Ah capacity.
- (3) Batteries: (1) 1p4s battery made of (4) 272Ah cells, with a BMS + (1) 1p4s battery made of (4) 272Ah cells, with a BMS +(1) 1p4s battery made of (4) 280Ah cells, with a BMS.
The battery bank comprises of 12 cells in 3 batteries. The 3 batteries are connected in parallel after each battery's BMS. One battery is 272Ah capacity, the second battery is of 272Ah capacity, the third battery is of 280Ah capacity.