EA-BT 20920-120 4U Regenerative Battery Tester

The EA-BT 20920-120 4U is a high-performance programmable dc power supply, programmable dc power source and regenerative battery tester from EA Elektro-Automatik, serving as a reliable benchtop power supply from psu and tps programmable power solution for industrial testing. It belongs to the EA-BT 20000 series battery tester, and stands out as a top budget psu option with exceptional performance and energy efficiency, meeting diverse power supply supplies demands for battery testing and power validation across multiple industries. As a versatile two quadrant battery tester and bidirectional battery tester, it functions as both a battery charge tester and a battery discharge tester, supporting grid energy recovery that feeds discharge energy back to the grid with up to 96.0% efficiency—making it an energy saving battery tester and low heat generation battery tester ideal for TPS power supply applications, dc power supplies setups, and programmable power supply needs. This 4U rack mount battery tester and 19 inch rack battery tester delivers 0-920V DC battery tester voltage range, 0-120A battery tester current range, and 30kW regenerative battery tester total power, with automatic derating to 18kW 208V derated battery tester power when operating on 208V AC input. It features autoranging battery tester constant-power DC output for flexible voltage and current combinations, supports CV CC battery tester, CP CR battery tester regulation modes with fast crossover, and integrates advanced battery testing functions including CC-CV discharge characteristics, ampere hour counter battery tester, integrated battery test mode, and battery simulation tester capabilities. The device supports 208V-480V 3-phase AC input with active power factor correction achieving a typical 0.99 power factor, and features 16-bit ADCs and DACs digital regulation with selectable voltage control speeds. It delivers precise measurements with ≤0.05% FS voltage accuracy and ≤0.1% FS current accuracy, along with ≤70mV rms CV ripple battery tester (300 kHz bandwidth) and ≤500mV pp CV ripple battery tester (20 MHz bandwidth), and a 2.5V minimum sink voltage battery tester for reliable low-voltage operation. Equipped with 300μF output capacitance battery tester, it provides stable power delivery, and offers robust insulation performance with +1500V DC negative pole insulation battery tester (negative DC pole to PE) and +2000V DC positive pole insulation battery tester (positive DC pole to PE). The AC input supports up to 61A max AC phase current battery tester at 208V and 53A max AC phase current battery tester at 480V under maximum output power. All communication interfaces are galvanically isolated, including 1 ms EtherCAT, 1 Gbit/s Ethernet, USB, and CAN FD, enabling seamless integration into automated test systems. It also features digital I/O, temperature sensor inputs, and supports parallel operation battery tester via Share-Bus and Master-Auxiliary bus, allowing up to 64 units to be combined into a single system with up to 1920 kW total power. Ideal for electro mobility battery tester applications, it excels at battery cell tester, battery module tester, battery pack tester, battery state of health tester, end of line battery tester, and battery recycling tester tasks, addressing questions of how can i test a power supply and battery performance with reliable, reproducible results. The standard model uses temperature-controlled forced air cooling, with an optional stainless steel water cooling system available for demanding high-power environments, and it meets strict safety and EMC standards including EN 61010-1 and EN 55011 Class A.

Key Features

• Regenerative Two-Quadrant Operation: Serves as both battery charger and electronic load, with grid energy recovery up to 96.0% efficiency to reduce energy costs and heat generation.
• High-Voltage High-Power Performance: 0-920V DC voltage range, 0-120A current range, 30kW total power (18kW derated at 208V AC input) for wide battery testing coverage.
• Precise Regulation & Measurement: 16-bit ADC/DAC digital regulation, ≤0.05% FS voltage accuracy, ≤0.1% FS current accuracy, ≤70mV rms/500mV pp CV ripple, and 2.5V minimum sink voltage.
• Flexible Autoranging Output: Constant-power autoranging DC output supports wide voltage/current combinations, with CV/CC/CP/CR regulation modes and fast crossover.
• Integrated Battery Testing Functions: Built-in CC-CV discharge, ampere hour counter, dedicated battery test mode, and battery simulation for comprehensive characterization.
• Industrial-Grade Isolated Interfaces: Galvanically isolated 1 ms EtherCAT, 1 Gbit/s Ethernet, USB, CAN FD, plus digital I/O and temperature sensor inputs for automation.
• Highly Scalable Parallel Operation: Up to 64 units parallel via Share-Bus/Master-Auxiliary bus for systems up to 1920kW, with equal load distribution.
• Robust Insulation & Safety: ±1500V DC negative pole to PE, +2000V DC positive pole to PE insulation, plus OVP/OCP/OPP/OT full protection.
• Global Compatibility & Cooling Options: Auto-adapting 208V-480V 3-phase AC input, standard forced air cooling, optional stainless steel water cooling.
• Versatile Industrial Applications: Optimized for cell/module/pack testing, SOH assessment, EOL validation, battery recycling and electric mobility testing.