How to Perform Battery Cell Pre-Charge and Formation Testing

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Modular Battery Test Solution
+ Modular Battery Test Solution
Modular Battery Test Solution
+ Modular Battery Test Solution

Optimize Cell Formation Workflow

Battery cell formation is one of the most critical and time-intensive stages in lithium-ion battery manufacturing. During this phase, cells undergo their first controlled charge–discharge cycles to establish the solid electrolyte interphase (SEI), a layer essential for ensuring long-term stability, safety, and performance. Because this process must be carefully managed and repeated across thousands of cells, formation and subsequent aging represent a substantial portion of total production time and operational cost, often emerging as a primary constraint on gigafactory throughput and scalability.

The pre-charge and formation stages impose distinct electrical and operational requirements, including the need to operate across a wide voltage range—from near-zero or even negative voltages up to tightly regulated charge levels. Leveraging optimized test and measurement equipment tailored to these conditions enables manufacturers to streamline workflows, reduce capital investment per production line, and maintain uniform cell quality. This optimization is critical for achieving high-throughput, cost-efficient battery production while meeting stringent performance and reliability standards.

Battery Pre-Charge and Formation Testing Solution

Executing battery pre-charge and formation workflows requires test systems capable of operating across wide voltage ranges, delivering precise current control, and scaling efficiently to support high channel counts in production environments. The Keysight Battery Pre-Charge and Formation Testing Solution support operation from negative or near-zero voltages through controlled formation charge profiles. This integrated setup enables parallel channel configurations for scalable current delivery, while maintaining accurate voltage and current regulation across all channels. Together, these capabilities allow manufacturers to optimize throughput, reduce cost per test channel, and ensure consistent SEI formation, enabling reliable, repeatable battery performance in high-volume production.
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Block Diagram of Battery Pre-Charge and Formation Testing Solution

How to Perform Battery Cell Pre-Charge and Formation Testing - Block Diagram - BT2202A

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