I also have extensive experience qualifying and testing lithium batteries. This listing is for a 4 pack of Lithtech grade A cells. Copper buss bars and bolts included.The spec below is the result of 4 cells connected in series. Nominal Voltage = 12.8V. Cycle Life > 5000 times. Max Charge Current = 50A. Max Charge Voltage = 14.6V (3.65V per cell). Max Continuous Discharge Current = 100A. End of discharge voltage = 10V. The remaining specifications can be seen in detail within the photos. This item is in the category "Consumer Electronics\Multipurpose Batteries & Power\Rechargeable Batteries". The seller is "grandvilleproducts" and is located in this country: US. This item can be shipped to United States.