How to Choose the Right Battery Testing Equipment for DCIR Testing？
DCIR testing focuses on measuring the voltage change of a battery under a short pulse current to accurately calculate its internal resistance. Transient voltage changes are often very small, so if the testing equipment lacks sufficient precision, fast response, or proper channel configuration, measurement errors may occur, making it impossible to correctly assess battery health or performance differences. Langtian battery testing equipment is designed to meet the high demands of precision, rapid response, and multi-channel control required for DCIR tests.
Below, we use our SCT-6A-16CH battery testing system to show why our equipment is ideal for DCIR testing.
1️⃣ High-Precision Measurement
DCIR testing relies on millivolt-level transient voltage changes. If current or voltage precision is insufficient, internal resistance calculations will be inaccurate. This is especially critical for small batteries such as button cells or low-capacity pouch cells, where even tiny voltage fluctuations must be captured accurately.
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The SCT-6A-16CH battery cell testing equipment provides current and voltage measurement accuracy of ±0.025% FS ±0.025% RD, ensuring highly accurate readings for everything from full-scale high currents to microamp-level small currents.
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16-bit AD resolution captures even minimal voltage changes, avoiding the loss of key information.
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100Hz high-speed data recording frequency ensures that voltage fluctuations during short pulses (e.g., within 1 second) are fully captured, allowing precise internal resistance calculation.
2️⃣ Fast Response
Tester requirement: DCIR tests often use short pulse discharges (1 second or less). Slow equipment response can miss transient voltage changes, leading to inaccurate internal resistance measurement.
The SCT-6A-16CH battery cell test equipment has a current response time of <1ms, ensuring that transient voltage changes are fully captured and each pulse yields accurate DCIR results.
3️⃣ Multi-Channel Independent Control
In R&D labs or production lines, multiple cells or modules often need to be tested simultaneously. Non-independent channels can cause data interference or reduce efficiency.
- Each unit of the SCT-6A-16CH lithium battery testing equipment has 16 independent channels, each with separate control and data recording, enabling high-efficiency batch testing while ensuring accurate data for every battery. Langtian as a professional battery 8 channel coin cell tester factory, we also supports customized channel configurations such as 8CH, 16CH, 32CH, 64CH, 128CH. For custom requirements, please contact our sales team.
4️⃣ Wide Current/Voltage Compatibility
Different battery types (button, cylindrical, prismatic, pouch) and capacities require different currents and voltages for testing. Equipment must be adaptable to ensure accurate DCIR measurement. SCT-6A-16CH battery cycle tester supports three current ranges (1mA–1A, 1A–3A, 3A–6A) and a voltage range of 25mV–5V, covering a wide range of battery types and ensuring accurate measurement of transient internal resistance for every battery.
5️⃣ Safety and Data Reliability
High pulse currents in battery testing can cause overheating or short circuits, so equipment must ensure operational safety while providing traceable data for analysis and sorting. SCT-6A-16CH lithium ion battery testing equipment provides overheat protection, power-off protection, and offline testing mode, and supports SMBus/I²C communication, ensuring safe testing and reliable data integrity.
6️⃣ Flexible Testing Modes
Different batteries or test conditions may require various modes such as constant current (CC), constant voltage (CV), CC-CV, constant power, constant resistance, or pulse charge/discharge. SCT-6A-16CH battery and cell test equipment supports multiple charge/discharge modes, allowing flexible switching based on testing needs, simulating real battery usage scenarios and improving the scientific accuracy of DCIR testing.
DCIR testing demands high precision, fast response, multi-channel capability, wide adaptability, safety, and flexible modes. The Langtian SCT-6A-16CH lithium battery test equipment is designed to meet these requirements, providing precise, fast, and reliable DCIR measurements. It delivers scientifically accurate data for R&D, production, and sorting applications.
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