Highlights

The Keysight BT2155A self-discharge analysis software, controlling the BT2152A or BT2152B self-discharge analyzer, measures and records Li-Ion cell self-discharge current and cell voltage. The software configures the analyzer’s channel settings, such as initial voltage and current matching, channel limits (OVP, OCP, UVP), measurement intervals, and test duration.

• The combination of the BT2155A and BT2152A or BT2152B delivers a revolutionary reduction in the time required to measure cell self-discharge current. For smaller cells like cylindrical 18650 or 21700 cells, testing indicates that you can quickly determine stable self-discharge current in as little as 1 hour or less, depending on the cell characteristics. For larger capacity pouch cells (e.g., 10-60 Ah), this can take as little as 1-2 hours or less.
• This is a significant improvement compared to waiting for days or weeks for the cell open circuit voltage (OCV) to change enough to determine cell quality. That can provide a major reduction in work-in-process inventory and floor space required for cell storage. And it can significantly decrease your test cycle time and improve your time-to-market.
• The self-discharge analyzer and software quickly measure self-discharge current using a potentiostatic measurement method with the characteristics needed to accurately make the direct current measurement. The BT2155A self-discharge analysis software controls one BT2152A or BT2152B self-discharge analyzer (up to 32 channels) and also measures the temperature on a group of up to 32 cells.
• Key Features and Specifications
• Measures and records cell self-discharge current and voltage using the BT2152A or BT2152B self-discharge analyzer.
• Controls the analyzer’s channel configurations, measurement settings, and test duration.
• Saves or logs measurement data on all channels (current and voltage) and temperature on the group of up to 32 cells.
• Recalls previously stored measurements for display and analysis.
• Exports recorded data to csv file.
• Matching function measures initial cell voltage and current and adjusts values for faster self-discharge measurement
• Allows the user to adjust the effective total resistance value in series with the cell. This allows the user to select a total resistance value to optimize the RC settling time of the measurement.