Product Overview

The Cell & Pack ACIR Testing Lab from Decibels Lab offers precise measurement of AC internal resistance (ACIR) of lithium-ion battery packs. This compact and accurate testing equipment is essential for validating pack health, consistency, and performance before deployment in EVs and energy storage systems.

It delivers rapid and repeatable results, making it an essential tool for manufacturers, R&D labs, and battery integration centers focused on quality control, failure analysis, and diagnostic evaluations.

Product Variants & Specifications


Specification Variant 1
Product ID DB-ACIR-A01
Power Supply 100–240 V AC, 50/60 Hz, 35 VA max
Measurement Method AC Four-terminal Method
Resistance Measurement Ranges 3 mΩ to 3 kΩ (8 ranges)
Resolution per Range 0.1 µΩ to 100 mΩ (based on range)
Measurement Current per Range 10 µA to 100 mA (based on range)
Resistance Accuracy ±0.5% rdg ±10 dgt (3 mΩ range)
±0.5% rdg ±5 dgt (≥30 mΩ ranges)
Measurement Frequency 1 kHz ±0.2 Hz
Voltage Measurement Ranges 6 V, 60 V, 100 V
Voltage Resolution 10 µV to 1 mV (based on range)
Voltage Accuracy ±0.01% rdg ±3 dgt
Response Time 10 ms
Sampling Period (Ω or V) EX.FAST: 4 ms
FAST: 12 ms
MEDIUM: 35–42 ms
SLOW: 150–157 ms
Sampling Period (Ω & V) EX.FAST: 8 ms
FAST: 24 ms
MEDIUM: 70–84 ms
SLOW: 253–259 ms
Functions Contact check, Zero adjustment (±1000 counts), Pulse measurement, Comparator (Hi/IN/Lo), Statistical analysis (Max 30,000), Delay, Averaging, Panel save/load, Memory storage, LabVIEW® driver support
Product Dimensions (W×H×D) 215 × 80 × 295 mm
Product Weight 2.4 kg
Equipment Includes CPU, Monitor, UPS, Custom table, Manual, Usable historical data, Power input module, Storage unit, DAQ & Connectors
Sample Battery Packs 48V 10Ah NMC (1), 48V 12Ah LFP (1) — subject to availability
Online Course Access 1-Year: Equipment installation & testing fundamentals

Key Experiments You Can Perform

This equipment enables a variety of diagnostic and quality control tests

  • Pack Internal Resistance Testing

    Measure impedance to assess pack performance and aging.

  • Pre-Delivery Inspection

    Ensure safe and consistent pack performance before EV deployment.

  • Failure Detection

    Identify packs with defective or degraded cells.

  • State-of-Health Estimation

    Use ACIR as a key indicator for battery health evaluation.

  • Quality Control in Manufacturing

    Verify uniformity across production batches.