ANSI C18.3M is a safety standard for portable lithium primary batteries (including button cells).
The main testing items include:

- Voltage Test: Measure the open-circuit voltage to ensure it meets the rated voltage.
- Capacity Test: Determine whether the actual capacity of the battery meets the rated value through discharge testing.
- Discharge Performance Test: Evaluate the battery’s performance under different discharge conditions.
- Impact Test: SimULate impacts the battery may experience during transportation or use.
- Vibration Test: Assess the battery’s stability under vibration conditions.
- Crush Test: Check the battery’s safety when subjected to compression.
- High-Temperature Test: Evaluate the battery’s performance in high-temperature environments.
- Low-Temperature Test: Evaluate the battery’s performance in low-temperature environments.
- Temperature Cycling Test: Assess the battery’s stability during temperature fluctuations.
- Short-Circuit Test: Simulate the battery’s reaction to a short circuit to ensure no hazardous events occur.
- Overcharge Test: Evaluate the battery’s safety under overcharging conditions.
- Forced Discharge Test: Test the battery’s behavior during forced discharge.
- Label Inspection: Ensure that the battery labeling complies with standard requirements.
- Packaging Test: Assess the protective performance of packaging during transportation.
These tests aim to ensure the safety and reliability of button batteries under both normal and abnormal conditions.
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