Active BMS recommendation wanted for 16s

Wet1

Solar Enthusiast
Joined
Nov 20, 2021
Messages
181
I have 16 Eve 280ah cells in route. I want a decent active balancing BMS. I will not pull many amps through the BMS, but I will likely get a 200A just to be safe (unless there's a reason not to significantly oversize?) I want to get started on the battery build and have the BMS in route if it takes a while to receive it shipping from China to the states.

My concern is I haven't ordered an inverter yet, but it will be an AIO from either Deye, Megarevo, or Huayu. I believe they all have RS485 and CAN, although this stuff is pretty Greek to me so I have no idea which of the two I should be focused on. Bluetooth would likely be a plus for me. I'm sure it's well known who's BMS plays well with Deye, but probably not the other two. I've reached out to Megarevo as I'll likely end up with this inverter or the Deye, although being a new inverter I'm not expecting to get much direction from them regarding DIY based BMS.

The one thing I haven't researched very much is BMS and as mentioned, know very little about the communication systems. Unsure if I should be looking for a model with an external relay or stick with the mosfet design?

Anyone care to steer me in the right direction so I don't find myself spending another 500 hours here reading up on the best options for this component too??

I've quickly looked at the JK 200A smart BMS w/ 2A active balancing. Any others you guys recommend?
 

FilterGuy

What, me worry?
Joined
Nov 26, 2019
Messages
5,613
Location
Los Gatos CA
I have 16 Eve 280ah cells in route. I want a decent active balancing BMS. I will not pull many amps through the BMS, but I will likely get a 200A just to be safe (unless there's a reason not to significantly oversize?) I want to get started on the battery build and have the BMS in route if it takes a while to receive it shipping from China to the states.

My concern is I haven't ordered an inverter yet, but it will be an AIO from either Deye, Megarevo, or Huayu. I believe they all have RS485 and CAN, although this stuff is pretty Greek to me so I have no idea which of the two I should be focused on. Bluetooth would likely be a plus for me. I'm sure it's well known who's BMS plays well with Deye, but probably not the other two. I've reached out to Megarevo as I'll likely end up with this inverter or the Deye, although being a new inverter I'm not expecting to get much direction from them regarding DIY based BMS.

The one thing I haven't researched very much is BMS and as mentioned, know very little about the communication systems. Unsure if I should be looking for a model with an external relay or stick with the mosfet design?

Anyone care to steer me in the right direction so I don't find myself spending another 500 hours here reading up on the best options for this component too??

I've quickly looked at the JK 200A smart BMS w/ 2A active balancing. Any others you guys recommend?
I do not find communication between the BMS and the inverter to be a very important characteristic. Consequently, I personally would not worry about trying to set it up. (Others clearly have a different opinion than mine).

2nd, the JK200 is a great little BMS. (I just put one in a system I built)
 

Wet1

Solar Enthusiast
Joined
Nov 20, 2021
Messages
181
I wanted to get the ball rolling, so I ordered the JK-B2A24S20P. Thank you!
 

再生可能 エネルギー

Solar Enthusiast
Joined
Nov 28, 2019
Messages
179
I do not find communication between the BMS and the inverter to be a very important characteristic. Consequently, I personally would not worry about trying to set it up. (Others clearly have a different opinion than mine).
I kind of agree, here is an informative video from 'Off-Grid Garage':


2nd, the JK200 is a great little BMS. (I just put one in a system I built)

 

FilterGuy

What, me worry?
Joined
Nov 26, 2019
Messages
5,613
Location
Los Gatos CA
@FilterGuy I was puzzle about this video:


I wonder if a 'Separate Port MBS' purpose is to be able to charge the battery,
while a load would get direct solar energy from the SCC without discharging the battery?

Would you recommend such BMS?
I have never used a separate port BMS..... Frankly, I see no advantage to them and the specs on them are often quite limiting.
 
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