The Agilent/Keysight E4371A is a 64-channel charger/discharger that enables simultaneous, independent testing of battery cells and packs through precise control of charging and discharging cycles. Each channel operates independently with individual voltage and current control, supported by integrated data logging to capture performance metrics over time. The system is optimized for battery characterization in R&D and production environments, delivering high-throughput testing with built-in safety features for extended cycle testing.
Technical Specifications
• 64 independent channels for simultaneous charging and discharging operations
• Precise voltage and current control per channel for accurate battery characterization
• Integrated data logging for real-time performance metric capture and post-test analysis
– Key Features
• Independent channel operation enables parallel testing of multiple battery units
• Detailed data logging tracks capacity fade, cycle life, and electrical performance degradation
• System-level safety integration for secure operation during extended or demanding test cycles
• High-throughput architecture maximizes testing efficiency across the full 64-channel capacity
– Typical Applications
The E4371A supports standard battery test procedures including:
• Rated capacity determination under specified discharge conditions
• Capacity retention and shelf-life assessment
• Effective internal resistance measurement and analysis
• Discharge rate effects evaluation across temperature ranges
• Life cycle performance simulation through repeated charge/discharge cycling
• Extended overcharge condition testing
– Compatibility & Integration
The E4371A integrates into Keysight’s broader test and measurement ecosystem for battery evaluation applications.

















