How to identify counterfeit 18650 batteries?
2024-07-16
There are several ways to identify counterfeit 18650 batteries:
1. Appearance inspection
- Labels and logos: 18650 batteries produced by regular manufacturers usually have clear and regular labels and logos, including brand name, model, capacity and other information. The labels of counterfeit batteries may be blurred, not tightly fitted, or even have no logos.
- Battery shell: Check whether the battery shell has obvious scratches, dents or other defects. Battery shells produced by regular manufacturers are usually smooth and defect-free.
- Pole: Whether the design of the positive and negative poles is standardized, and whether the positive pole has clear protrusions and insulating rings.
2. Weight detection
- Weight: Generally speaking, the weight of a genuine 18650 battery is about 45 grams. If the battery is significantly lighter than this weight, it is likely to be a counterfeit product. Counterfeit batteries may use low-quality materials or a small amount of fillers.
3. Capacity test
- Actual capacity: Use a dedicated battery capacity test device to measure the actual capacity of the battery and compare it with the nominal capacity. The actual capacity of counterfeit batteries is often much lower than their nominal capacity.
4. Internal resistance test
- Internal resistance: Use an internal resistance tester to measure the internal resistance of the battery. Counterfeit batteries usually have higher internal resistance, while regular batteries have lower internal resistance. High internal resistance can cause the battery to perform poorly under high loads, easily heating up and losing power.
5. Price comparison
- Price: If the price of a certain 18650 battery is significantly lower than the market average, it is likely to be a counterfeit product. Genuine batteries have higher costs and technical requirements, and the price will not be too cheap.
6. Purchase channels
- Purchase through regular channels: Try to purchase batteries through regular sales channels, such as brand official flagship stores, certified stores of large e-commerce platforms, or physical stores. Products from these channels are relatively more secure.
7. User experience
- Performance in use: Counterfeit batteries may show instability during use, such as rapid power loss, short or long charging time, abnormal temperature, etc. If the battery behaves abnormally during use, stop using it immediately.
Through the above methods, you can accurately identify counterfeit 18650 batteries to ensure safe use and reliable performance.
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