LTO SCiB battery bank for off-grid

[Jason Barrett]

I did. It's been running great since this summer. I found the individual cell voltages to be remarkably balanced without the need for bms balancing. The Dalys are hooked up, by I ask nothing of them other than low voltage and high voltage cut-off. That said, I keep my battery bank between 51 and 60v so am 10% off the top and about the same off the bottom, so I don't anticipate needing the Dalys unless a cell goes bad. But so far so good.

May I ask where you got your scibs from? I wouldn't mind getting a few more to fill out my load centers.


View attachment 79916

I got them from Greentecauto also. As you are aware, they sold out. I would like to find more also.

 

[JimJr]

I would like use the factory BMS to monitor cell voltages. Are you doing this? To have a monitor that will disconnect/fault the batteries would be awesome. I know there were guys working on cracking the CAN, and I need to see where their work stops.

I only use the max cell bleed off , no other BMS. I hope Greentec gets more in

 

[Jason Barrett]

I only use the max cell bleed off , no other BMS. I hope Greentec gets more in

Can you explain your method of max cell bleed off, or provide a link to such an explanation.
I am not using factory or Daly BMS. I bottom balanced at 1.6V and set inverter to run 50-62V.
I doubt they do get more in. I believe the FIT EV was offered in Japan also. I have hopes there are some intact over there.
I think these cells are packaged up every day by toshiba, and we just need to find a recycler that has 12 or 24s packs. Or, set up a group buy that will get toshibas attention.
There is a new SCIB

Toshiba Launches 20Ah-HP SCiB™ Rechargeable Lithium-ion Battery Cell that Delivers Both High Energy and High Power | News | Toshiba

www.global.toshiba

The possibility to expand our systems is not dead.

 

[JimJr]

Can you explain your method of max cell bleed off, or provide a link to such an explanation.
I am not using factory or Daly BMS. I bottom balanced at 1.6V and set inverter to run 50-62V.
I doubt they do get more in. I believe the FIT EV was offered in Japan also. I have hopes there are some intact over there.
I think these cells are packaged up every day by toshiba, and we just need to find a recycler that has 12 or 24s packs. Or, set up a group buy that will get toshibas attention.
There is a new SCIB

Toshiba Launches 20Ah-HP SCiB™ Rechargeable Lithium-ion Battery Cell that Delivers Both High Energy and High Power | News | Toshiba

www.global.toshiba

The possibility to expand our systems is not dead.

I am referring to it's internal BMS , it bleeds the cells to 2.4v when it is done , let it sit 24 hours and it will be around 28.8v.

That 20ah hp version looks like the 10ah one , Like it puts out 1900w and 825ah at a pulse current . I use the 3ah version to start big blocks motors

 

[AmpLee]

I am referring to it's internal BMS , it bleeds the cells to 2.4v when it is done , let it sit 24 hours and it will be around 28.8v.

That 20ah hp version looks like the 10ah one , Like it puts out 1900w and 825ah at a pulse current . I use the 3ah version to start big blocks motors

I was under the impression that the internal bms does not function without an external power source. In Fits, the bms were powered by the starter battery iirc. There’s a bunch of guys at the Honda Insight forum that have done a ton of work in these modules.

 

[SolarPrep]

I was under the impression that the internal bms does not function without an external power source. In Fits, the bms were powered by the starter battery iirc. There’s a bunch of guys at the Honda Insight forum that have done a ton of work in these modules.

AmpLee: Peter Perkins in Australia (?) is one of the guys who has done a lot of work on the Fit battery BMS. You can find him on the Insight forum.

As I understand from Greentec, the Fits in the US were only leased. Greentec got all the batteries when they were scrapped out. I have some of the modules from Art at Greentec.

 

[myothiha]

I use Scib 12s configuration with SRNE hybrid inverter. Charging cut off 31.6v and low cutoff 22v. It seems the original battery bank has built in BMS and balancer. I use it for a year and all cell are equal voltages and no problem found until now