I am note sure if there is a thread about this but figured here is the best place to do it.

Anyone on the forum have had experiences with a BMS and any recommendations ?

 

1 hour ago, 20VT said:

I am note sure if there is a thread about this but figured here is the best place to do it.

Anyone on the forum have had experiences with a BMS and any recommendations ?

 

Technically everyone has a experience with a BMS, your phone has one protecting it from becoming a fireball, unless you own a Samsung Note 7

2 hours ago, PJJ said:

Technically everyone has a experience with a BMS, your phone has one protecting it from becoming a fireball, unless you own a Samsung Note 7

Thanks for the comment 

 

Perhaps I should be more specific BMS in the context of managing LFP cells for solar charging home systems.

 

 

4 minutes ago, 20VT said:

BMS in the context of managing LFP cells for solar charging home systems.

What I learned recently here on PF is that:
1) If your system needs a accurate SOC, a BMS cannot provide that unless the BMS is one of the more expensive makes. But, not a issue if the SOC is not important or required.
2) One PF member's BMS had the wrong firmware uploaded on his BMS, supplier fixed that. So the battery supplier is a huge factor if there ever is a problem.

The two makes I learnt that are good and exepensive, are Orion and REC.

22 minutes ago, The Terrible Triplett said:

What I learned recently here on PF is that:
1) If your system needs a accurate SOC, a BMS cannot provide that unless the BMS is one of the more expensive makes. But, not a issue if the SOC is not important or required.
2) One PF member's BMS had the wrong firmware uploaded on his BMS, supplier fixed that. So the battery supplier is a huge factor if there ever is a problem.

The two makes I learnt that are good and exepensive, are Orion and REC.

Thanks for the response.

I am currently using a BMV for the SOC purposes.

Thanks for the info I will check out those companies

Look at an Oz company , Batrium , doing BMSs configurable for a variety of different lithium chemistry. 

Orion, REC, or Batrium (I always forget about that last one). All fairly expensive, but they do everything including good SOC tracking.

You can go cheaper of course. The bare basics a BMS must do is balance cells and disconnect if the voltage of any cell goes too low or too high. The rest is gravy.

7 hours ago, seant said:

Look at an Oz company , Batrium , doing BMSs configurable for a variety of different lithium chemistry. 

Ok will do as well

6 hours ago, plonkster said:

Orion, REC, or Batrium (I always forget about that last one). All fairly expensive, but they do everything including good SOC tracking.

You can go cheaper of course. The bare basics a BMS must do is balance cells and disconnect if the voltage of any cell goes too low or too high. The rest is gravy.

Orion already got back to me and pointed me to Freedomwon the local reseller.

What product do you plan to use with BMS? As I know, Grepow BMS can be customized if you want some specific functions, like self-heating for low temperature or short circuit alarm/protection.

The price may more expensive but depends on your need, or can ask them for some advice.

Thats the website that I mentioned before: https://www.grepow.com/page/custom-battery-solution.html

 

@20VT Another place you can try maybe and they local is MD solar. Revol batteries used there BMS before they got there own. I spotted on one of the local installers post and ask the local cape town sell agent and he told me they used the MD ones before and then change over to there own one now. 

Here you can spot the MD one in this photo

Edited August 30, 20196 yr by Gerlach

What type of LFP battery do you need the BMS for? 16s? Ah?

On 2019/09/05 at 8:47 PM, RikH said:

What type of LFP battery do you need the BMS for? 16s? Ah?

They are 60Amp Sinpoly cells in a 8S configuration

This one could be the one you're looking for:

Chargery BMS8T

On 2019/09/10 at 1:51 AM, RikH said:

This one could be the one you're looking for:

Chargery BMS8T

Sorry I am only seeing your response now.

Will check it out and let you know.

Have you got personal experience using this product ?

On 2020/01/04 at 9:35 AM, 20VT said:

Have you got personal experience using this product ?

Not yet. Just ordered a BMS16T for my new to build powerwall.

On 2020/01/12 at 3:07 PM, RikH said:

Not yet. Just ordered a BMS16T for my new to build powerwall.

Ok cool let us know what your experiences are like.

I have ordered LiFePo4 cells from China. That will take a while so I cannot test yet. Chargery BMS has arrived already. I'll keep you informed.

18 hours ago, RikH said:

I have ordered LiFePo4 cells from China. That will take a while so I cannot test yet. Chargery BMS has arrived already. I'll keep you informed.

will you share your source of cells?

3 hours ago, ibiza said:

will you share your source of cells?

Here you go:

http://www.ecopowerpack.com/show.asp?id=97

thanks

My BMS have arrived yesterday. Will start crimping tonight and see if i can get it up and running. 

On 2020/01/19 at 10:43 AM, RikH said:

Here you go:

http://www.ecopowerpack.com/show.asp?id=97

Which ones did you order and what did you pay?

18 hours ago, shumbaman said:

Which ones did you order and what did you pay?

I ordered the ones in the link. For prices you could contact Benson.

[email protected]

On 2019/09/10 at 1:51 AM, RikH said:

This one could be the one you're looking for:

Chargery BMS8T

I'm busy checking this Chargery BMS out for suitability with a homebrew LiFe battery.

Anyone have any comments on the following:

The Chargery system has two relays to control charge/discharge.

How will this behave with a Victron Multiplus used in UPS mode.  I'm concerned that there will be conflict with the inverter's change-over relay and the BMS's relays/contactors.