GÖPEL Electronic Releases Battery Cell Tester for High-Volume EV Quality Checks
Device can evaluate up to five cells simultaneously, reducing testing time compared to single-cell methods.
GÖPEL electronic has released a battery cell tester that evaluates up to five cells at the same time, targeting quality assurance for high-voltage EV batteries in development and production settings.
What Happened
The modular, configurable device runs standard safety and functional tests on individual cells. It measures Open Circuit Voltage (OCV), which indicates a cell's state of charge with no load applied, and Alternating Current Internal Resistance (ACIR), which reflects performance, aging state, and quality. Since internal resistance rises as cells age, the ACIR reading helps flag out-of-spec cells before they are assembled into packs. GÖPEL says OCV and ACIR together provide a quick read on cell condition without requiring a full charge-discharge cycle. The tester connects to automated equipment, allowing batch testing to run in seconds. It serves as a smaller companion to the company's end-of-line battery test system that tests complete packs.
Why It Matters
Cell matching by voltage and resistance is critical because a pack's weakest cell limits the performance of the entire string. Faster incoming inspection and more efficient cell grouping can help manufacturers catch substandard cells earlier in the supply chain, potentially reducing defects reaching consumers. For EV makers, shortened testing cycles could accelerate production timelines without sacrificing quality checks.
The Bottom Line
GÖPEL electronic's five-cell tester targets high-volume battery quality assurance with rapid, reproducible results for incoming inspection and cell grouping applications.
