meetyg
Solar Enthusiast
- Joined
- Jun 4, 2021
- Messages
- 1,072
Well, it's a long story but I'll try to make it short:
After an order fiasco, I'm ending up with 8 x EVE LF90K (90ah) Lifepo4 cells, and another 8 x EVE LF105 (105Ah) cells.
I have a 24v all-in-one inverter on order and want to build a battery for it.
Although I am a JBD BMS fan, this time I decided to go JK 200A BMS because of the 2A active balancing.
Anyways, my dilemma is this:
1. To build 2 separate 24v battery packs, each with its own BMS, and use them in parallel
or
2. To parallel each 90Ah cell with a 105Ah cell, and build a 2p, 8s 24v battery (total capacity of 195Ah).
Yes I know that neither are ideal, but option 2 sounds weird. The reason for option 2 is of course cost and simplicity of the build:
1. Both cell types are same dimensions (or at least very close).
2. Don't need to buy another BMS (the JK is almost $100)
3. Less balance leads, only one battery to monitor, etc...
The main goal is to make good use of both cell types. Mainly for more capacity, I don't really need more power (not planning on maxing out the 3kw inverter).
Which path would be the best in terms of cell life / cycle life ?
Or should I just give up on the idea and find something else to do with the 90Ah cells (not much that I can think of, already got some 12v Lifepo4 packs of various capacities lying around).
You thoughts and opinions are appreciated!
After an order fiasco, I'm ending up with 8 x EVE LF90K (90ah) Lifepo4 cells, and another 8 x EVE LF105 (105Ah) cells.
I have a 24v all-in-one inverter on order and want to build a battery for it.
Although I am a JBD BMS fan, this time I decided to go JK 200A BMS because of the 2A active balancing.
Anyways, my dilemma is this:
1. To build 2 separate 24v battery packs, each with its own BMS, and use them in parallel
or
2. To parallel each 90Ah cell with a 105Ah cell, and build a 2p, 8s 24v battery (total capacity of 195Ah).
Yes I know that neither are ideal, but option 2 sounds weird. The reason for option 2 is of course cost and simplicity of the build:
1. Both cell types are same dimensions (or at least very close).
2. Don't need to buy another BMS (the JK is almost $100)
3. Less balance leads, only one battery to monitor, etc...
The main goal is to make good use of both cell types. Mainly for more capacity, I don't really need more power (not planning on maxing out the 3kw inverter).
Which path would be the best in terms of cell life / cycle life ?
Or should I just give up on the idea and find something else to do with the 90Ah cells (not much that I can think of, already got some 12v Lifepo4 packs of various capacities lying around).
You thoughts and opinions are appreciated!