Samsung SDI 94Ah NMC Prismatic Lithium-Ion Battery, Used/Tested

These Samsung 94Ah cells have been removed from residential energy storage packs. We've cut the aluminum bus bars and fully tested all cells. These have 1/4"-20 studs and include flanged nuts.

These cells are great for many different applications ranging from stationary storage to EVs. In fact, they're used in the BMW i3, Fiat 500e, VW e-Golf and other EVs, and we've used them in applications ranging from solar backup to high-performance golf carts.

See the data sheet right here.

Options

With Studs

Please allow a few extra days for processing. We've milled off the laser-welded bus bars, then drilled and tapped both electrodes to install 1/4"-20 studs and nuts. We use an industrial mill and drill press for each operation, which ensures repeatability and safety of the cells. Even the tapping operation is done on the mill.

We tested a batch of batteries after our first run of drilling/tapping, charging at 30 amps and discharging at 50 amps. They tested at 99Ah , and impedance was right at 0.50mΩ. We even checked temperature distribution with a Flir camera and found no hot spots.

Without Studs

The less-expensive option for those that want to do a little work. These will have remnants of the bus bar still attached. It's fairly straightforward to carefully clean the electrodes with your tool of choice, then drill and tap yourself.

Tested

These are fully charged and load tested, along with AC impedance. Cells are marked with actual capacity and charged to nominal (3.6v) for storage and shipping. Every cell gets a voltage-check prior to leaving our shop.

Highlights

From Samsung:

Li-Ion prismatic Samsung 94 Ah special cell for EV and energy storage applications provides long cycle life > 3.200 cycles by Nickel-cobalt-manganese (NCM) technology.

Technical specification:

• Nominal voltage of the cell is 3.7 V and the operational voltage is 2.75 V – 4.15 V.

• Recommend charging/discharging current is 0.33 C (31 A)

• Cycle life: 3,200 cycles at 80 % DoD (Deep of Discharge) up to 80 % residual capacity (at discharge current 94 A)

• Maximum discharge current is 1 C continuously and peak 4.3 C (413 A, <5 s).

• Maximum charging current is 0.5 C continuously

• Dimensions: 173 x 125 x 45 mm

• Weight: 2 Kg

• Charging temperature: 0° C ~ 60° C

• Discharging temperature: -25° C ~ 60° C