Agilent/Keysight BT2204B

The Keysight BT2204B is a 32-channel charge-discharge module engineered for Li-Ion cell formation, validation testing, and lifetime cycling of battery-powered devices. It delivers precise, independent control over each physical channel while supporting flexible paralleling configurations to achieve currents up to ±200 A. The module integrates into the BT2200 Charge-Discharge Platform, scaling to 256 total channels across a single mainframe.

– Technical Specifications

• Module Type: 32-channel charge-discharge module
• Voltage per Channel: 6 V
• Current per Physical Channel: ±6.25 A
• Power per Physical Channel: 27.34 W
• Maximum Paralleled Current: ±200 A (all 32 channels in parallel on single module)
• Channel Scalability: Up to 256 channels per mainframe (maximum eight BT2204B modules per chassis)
• Chassis Compatibility: BT2202A (400/480 VAC 3-phase) or BT2203B (200/208 VAC 3-phase)

– Key Features

• Flexible Test Sequences: Create custom test programs combining charge, discharge, pre-charge, rest, and DC internal resistance (DCIR) measurement steps, with up to 50 steps per sequence and 256 unique sequences supported across the platform
• Real-Time Monitoring: Track voltage, current, power, Amp-hours, Watt-hours, ΔV/Δt, ΔI/Δt, ΔV, and ΔI throughout test execution
• Channel Paralleling: Combine physical channels within a single module to increase current capacity (2 channels = ±12.5 A; 3 channels = ±18.75 A; up to 32 channels = ±200 A)
• Safety and Protection: Probe-check verification, customizable or predefined charge/discharge/pre-charge limits, and independent mode control to safeguard cells during testing

– Typical Applications

Ideal for testing higher power prismatic and pouch cells requiring elevated charge-discharge currents. Supports both cell formation and accelerated lifetime cycling validation.

– Compatibility & Integration

Physical channels cannot be paralleled across multiple BT2204B modules. All modules within a single chassis must be identical (all BT2204B or all BT2205A). Design considerations include available power per physical channel, minimum module voltage at specified discharge current, and voltage drop across wiring, connectors, and fixtures.