The Dr. 4K is a state-of-the-art digital discharger system for sub-C rechargeable batteries used in R/C applications. A wireless, programmable unit for the budget-minded racer, it automatically recognizes polarity when batteries are connected. The Dr. 4K can discharge 1-6 cells or packs and, like the CTX D2 and Cell Conditioner, can be used with the Power Master power supply
