8s Black/Grey Samsung 30.4v 67ah 2.04kWh Lithium Ion - $49/kWh

Max Continuous Charge Rate - 67a
Max Continuous Discharge Rate - 450a (high power)

These use 67ah Samsung prismatic cells.

Note: Main positive is on the left post and main positive is on the right post.

These Samsung modules are absolutely beautiful and in custom boxes.

They were used as backup only for server rooms. Likely cycled less than 10 times. All modules are checked, well balanced, and testing near full capacity.

You can easily add an 8s Lithium Ion BMS since the balance leads are already connected, simply connect the balance leads to your BMS. The board you see on the front is just a balancer and communication pcb but that part is not a BMS, it just communicates to another main BMS units. So you will have the add your own BMS which would be super easy as you can see in the photos. The case just pops right off if you use a flat screw driver.

The modules are also under 50 lbs (37 lbs) so they can ship ground instead of freight which is a huge bonus. They are 8s lithium ion with a 3.8 nominal voltage per cell and 67ah. You can expect high cycle life out of the cells since they are EV grade Samsung cells. Each cell fully charged voltage is 4.2v and fully discharged is 2.8v. The cells are in 8s configuration.

Check the 2nd photo for the specs.

Dimensions are 16.5" x 9" x 7"

Module Fully charged 33.6v
Module Fully Discharged 22.4v
Main +/- bolt size: M8 x 1.25