Caltest Instruments offers high-performance programmable Bi-Directional DC power supplies from leading manufacturers including Tektronix Elektro-Automatik^* (EA) and Gustav Klein. Bi-Directional DC can operate as Programmable DC source, Sink as well as Regenerative Electronic Load. This makes them particularly suitable for applications like battery testing in e-mobility, battery simulation, fuel cell testing, on-board charger testing, solar array simulation, battery recycling and power electronics. The EA-PSB series bidirectional DC programmable power supply with power levels ranging upto 30kW in single box. EA-PSB series offers, regenerative electronic load with up to 96% efficiency, returning it to the local grid. This helps reduce heat, noise and HVAC costs, making them cost-effective and environmentally friendly. The Gustav Klein offers high-performance regenerative DC power test systems with power level ranging upto 650kW in single cabinet with Single or multi-channel configuration. The multi-channel approach saves Energy consumption from Grid which makes it the most cost effective solution for High Power Battery test, Battery cycler, Motor-Generator test.