BMS recommendations for 72V 160A 20P20S pack build?

[BatteryManTakeMeByTh]

Basically title. I've heard Daly is either crappy or at least very hit or miss. I did hear good things around about the ones below:

7s-21s 300a Lithium Ion / Lifepo4 Smart BMS + Bluetooth

These BMS units are brand new and work for all variations from 7s to 21s and everything in between. This BMS is rated for 300a continuous. These come with the bluetooth already installed. Included is 4x 4AWG wires with ring terminals already crimped. This makes installation even easier for you...

batteryhookup.com

8-24s 200a Li-Ion Lifepo4 BMS + UART + RS485 + CAN

This is the best BMS that works for lithium ion and lifepo4 batteries from 8s to 24s. So 24-72v lifepo4 and 28-86v lithium ion. It is preprogrammed for lifepo4 settings but you can change that. It has all the communications to work with inverters including UART, RS485, and CAN. Bolts are...

batteryhookup.com

ANT BMS 8S-20S 110A-220A Smart 24V-72V Lifepo4 li-ion LTO Battery Protection Board – ANT BMS

antbms.vip

Any feedback on these would be great, as would any recommendations. I'm new to the choices of picking BMSs, and I haven't found many sources out there that look legit. Happy to answer follow-up questions.

 

[amberwolf]

If it is useful, there are quite a few threads about BMSes here with info and thoughts you might need to consider before making a choice, regarding features and functions, wiring, installation locations, etc. Most of them are here in this subforum, though there are some elsewhere (mostly in the motorcyle and large EV subforums). (there are also individual posts in ohter threads, but most of the info should be in the BMS and battery specific threads).

(it is too much info to retype here).

 

[BatteryManTakeMeByTh]

If it is useful, there are quite a few threads about BMSes here with info and thoughts you might need to consider before making a choice, regarding features and functions, wiring, installation locations, etc. Most of them are here in this subforum, though there are some elsewhere (mostly in the motorcyle and large EV subforums). (there are also individual posts in ohter threads, but most of the info should be in the BMS and battery specific threads).

(it is too much info to retype here).

I searched a bunch of threads, and I got the few links I posted from there. I know this is a lot to ask, but any chance you could link good threads you know of? I'll go looking again after I make some dinner.

 

[amberwolf]

Keep in mind that I'm not suggesting to find specific recommendations of a BMS in those threads...just that you can learn about the many types of BMS and what functionalities and features there are to be had, and then decide how you want your system to work, and then you can start looking at specific BMSes.

If you just pick a BMS, it may not do what you want it to (though you may not know that till later). We don't know what you want it to do, and it is likely that you don't know either as you probalby don't yet know what they *can* do (and can't), and the limitations of various types.

There are common-port, separate-port, FET-based, contactor-based, balancing, non-balancing, active-balancing, passive-balancing, dumb, smart, programmable, non-programmable, BT-enabled, hardwired-enabled, ones with screens, ones without, etc.

If I have time later I will see if I can find any specific threads discussing those and link them, but I won't make any promises. (am in the middle of making a piece of music and am on a roll, but while waiting for it to render out some audio I came to peek at the forum, since JellyBeanThePerfectlyNormalSchmoo is somewhere else having a nap or something and isn't demanding my attention ).

This doesn't narrow it down much, but this link shows threads in the forums I mentioned (rather than eveyrwhere) with BMS in the title, by thread, by most replies (rather than newest):

Google search results

endless-sphere.com

There's still 70 pages, which doesnt' help concentrate effort much.

 

[E-HP]

Basically title. I've heard Daly is either crappy or at least very hit or miss. I did hear good things around about the ones below:

7s-21s 300a Lithium Ion / Lifepo4 Smart BMS + Bluetooth

These BMS units are brand new and work for all variations from 7s to 21s and everything in between. This BMS is rated for 300a continuous. These come with the bluetooth already installed. Included is 4x 4AWG wires with ring terminals already crimped. This makes installation even easier for you...

batteryhookup.com

8-24s 200a Li-Ion Lifepo4 BMS + UART + RS485 + CAN

This is the best BMS that works for lithium ion and lifepo4 batteries from 8s to 24s. So 24-72v lifepo4 and 28-86v lithium ion. It is preprogrammed for lifepo4 settings but you can change that. It has all the communications to work with inverters including UART, RS485, and CAN. Bolts are...

batteryhookup.com

ANT BMS 8S-20S 110A-220A Smart 24V-72V Lifepo4 li-ion LTO Battery Protection Board – ANT BMS

antbms.vip

Any feedback on these would be great, as would any recommendations. I'm new to the choices of picking BMSs, and I haven't found many sources out there that look legit. Happy to answer follow-up questions.

The first doesn't list enough specs to know much about it. The second one has a super low balance current for the size pack you're building (180mA). The third one is even worse with only 100mA.

I'm using one of these (100A charge and discharge):

https://www.amazon.com/100BALANCE-Srandard-Version-Balancer-Bluetooth/dp/B0CQZYS8QR?th=1

I think there are versions up to 300A. The active balance current can be set up to 1A. It keeps my cells balanced out to the third decimal point. Supports 3 temp sensors (I'm using 2) for high and low temp protection, and bluetooth connectivity and setup. I believe the 100Balance brand is a subsidiary of Daly. I'm pretty happy with it. I can stay connected to it between the garage and upstairs, if I need to go in the house for moment, and my normal charging takes about an hour.

You can get an idea of how the interface looks in this video (the video has the wi-fi version, while I have the bluetooth):

 

[BatteryManTakeMeByTh]

The first doesn't list enough specs to know much about it. The second one has a super low balance current for the size pack you're building (180mA). The third one is even worse with only 100mA.

I'm using one of these (100A charge and discharge):

https://www.amazon.com/100BALANCE-Srandard-Version-Balancer-Bluetooth/dp/B0CQZYS8QR?th=1

I think there are versions up to 300A. The active balance current can be set up to 1A. It keeps my cells balanced out to the third decimal point. Supports 3 temp sensors (I'm using 2) for high and low temp protection, and bluetooth connectivity and setup. I believe the 100Balance brand is a subsidiary of Daly. I'm pretty happy with it. I can stay connected to it between the garage and upstairs, if I need to go in the house for moment, and my normal charging takes about an hour.

You can get an idea of how the interface looks in this video (the video has the wi-fi version, while I have the bluetooth):

Awesome, thank you very much. Clearly I have a lot more reading to do, but I will definitely look into this option when I have finally read up on the important specs and ranges for my voltage/current/capacity.