EA-BT 20920-40 Triple 4U WC Water-Cooled 3-Channel Regenerative Battery Tester

The EA-BT 20920-40 Triple 4U WC is a high-performance programmable dc power supply, programmable dc power source and industrial-grade EA Elektro-Automatik battery tester, also known as EA-BT 20920-40 Triple, belonging to the EA-BT 20000 Triple series. It serves as a reliable benchtop power supply from psu and tps programmable power solution, making it a top budget psu option with exceptional durability and energy efficiency, meeting diverse power supply supplies demands for high-voltage battery testing, and addressing common questions of how can i test a power supply and battery performance with professional-grade precision. As a versatile two quadrant battery tester, bidirectional battery tester and battery charge discharge tester, it features regenerative energy recovery battery tester and grid energy recovery battery tester functionality, feeding discharge energy back to the grid with up to 96.0% efficiency battery tester performance—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 water cooled battery tester and triple channel water cooled battery tester is equipped with 3 independent galvanically isolated channels, delivering 0-920V battery tester voltage range, 0-40A battery tester current range, and 10000W per channel battery tester power, with a 30000W total power battery tester capacity (automatically derated to 18000W when operating on 208V AC input). It features autoranging DC output battery tester constant-power stages for flexible voltage and current combinations, supports CC-CV battery tester, CP and CR regulation modes with fast crossover, and integrates essential battery testing functions including CC-CV discharge characteristics, ampere hour counter battery tester, and comprehensive alarm management for battery capacity tester, battery SOH tester, battery EOL tester and battery cycle life testing. The device supports 208V-480V AC input battery tester with 3-phase power and active power factor correction achieving a typical 0.99 power factor battery tester, and features 18 bit digital regulation battery tester with selectable voltage controller speeds (normal, fast, slow) for fast dynamic response. It delivers high-accuracy measurements with ≤0.05% FS voltage accuracy battery tester and ≤0.1% FS current accuracy battery tester, along with low ripple performance of ≤70mV rms CV ripple battery tester (300 kHz bandwidth) and ≤700mV pp CV ripple battery tester (20 MHz bandwidth), and a 2.5V minimum sink voltage battery tester for reliable low-voltage battery discharge testing. Equipped with 100μF output capacitance battery tester per channel, it provides stable power delivery, and offers robust insulation performance with ±1500V DC negative pole to PE, +2000V DC positive pole to PE, and ±2000V DC channel-to-channel isolation. All communication interfaces are galvanically isolated interface battery tester compliant, including 1 ms EtherCAT communication battery tester, 1 Gbit/s Ethernet, USB, and CAN FD, enabling seamless integration into automated industrial test systems. It also features per-channel digital I/O, temperature sensor inputs, and supports parallel channel battery tester operation (combining 3 internal channels for up to 120A total current) as well as multi-unit parallel via Share-Bus and Master-Auxiliary bus for scalable high-power test systems. The unit comes standard with a stainless steel water cooling system, weighing 56 kg, which enables continuous full-power operation even in high-temperature industrial environments, eliminating the need for extensive air conditioning and reducing operational noise. Ideal for electro mobility battery tester applications, it excels as a battery module tester, battery pack tester, ultra high voltage battery tester, battery recycling tester and energy storage system tester, supporting cell, module and pack characterization, second-life battery classification, and end-of-line validation for automotive and renewable energy industries.

Key Features

• 3-Channel Water-Cooled Regenerative Design: Two-quadrant bidirectional operation for charging and discharging, with grid energy recovery up to 96.0% efficiency to cut energy costs and heat output.
• Ultra-High Voltage Performance: 3 independent channels with 0-920V DC voltage, 0-40A current, 10kW per channel, and 30kW total power (18kW derated at 208V AC input).
• 18-Bit High-Precision Regulation: High-resolution digital control with selectable speed modes, ≤0.05% FS voltage accuracy, ≤0.1% FS current accuracy, and low CV ripple.
• Flexible Autoranging Output: Constant-power autoranging DC stages support wide voltage/current combinations, with CV/CC/CP/CR modes and fast crossover between states.
• Integrated Comprehensive Testing: Built-in CC-CV discharge, ampere hour counter, and alarm management for capacity, SOH, EOL and battery recycling testing.
• Galvanically Isolated Industrial Interfaces: 1 ms EtherCAT, 1 Gbit/s Ethernet, USB, CAN FD, plus per-channel digital I/O and temperature sensor inputs for automation.
• Scalable Parallel Operation: Internal 3-channel parallel (up to 120A) and multi-unit parallel via Share-Bus/Master-Auxiliary bus for high-power test systems.
• Stainless Steel Water Cooling: Efficient closed-loop water cooling enables continuous full-power operation in demanding environments with minimal noise.
• Global Grid Compatibility: Auto-adapting 208V-480V 3-phase AC input with 0.99 typical power factor for worldwide deployment.
• Industry-Specific Applications: Optimized for EV battery packs, high-voltage modules, energy storage systems, battery recycling and automotive end-of-line testing.