How to identify 18650 lithium batteries without labeled capacity?
18650 lithium battery is a common rechargeable battery. Due to the existence of a large number of counterfeit and inferior products in the market, many manufacturers choose not to label the capacity on the battery in order to avoid forgery and false advertising. This has caused some confusion for consumers, but we can identify the true capacity of 18650 lithium batteries through other means.
2、 Appearance features
1. Size: The standard
18650 lithium battery size is 18mm in diameter and 65mm in height. If the battery size does not match this, it is likely to be a counterfeit product.
2. Weight: Genuine 18650 lithium batteries are usually heavier because they contain a higher amount of lithium ions inside.
3. Packaging: 18650 lithium batteries from legitimate manufacturers usually come with complete packaging, including product model, capacity, production date, and other detailed information.
3、 Battery performance testing
By testing the performance of the battery, we can preliminarily determine whether its capacity meets the nominal value.
1. Charging efficiency: Place the battery into a suitable charger for charging, observe the charging time and battery temperature. If the charging time is too short or the battery heats up severely, it is likely to be a low-quality battery with insufficient capacity.
2. Discharge time: Place the battery in a suitable device for discharge and record its continuous usage time. If the discharge time is much lower than the nominal capacity, there may be an issue with the actual capacity of the battery.
3. Cycle life: Observe the capacity degradation of the battery through multiple charge discharge cycle tests. Legitimate 18650 lithium batteries typically have a good cycle life.
4、 Selection of purchasing channels
Choosing legitimate purchasing channels can minimize the purchase of counterfeit 18650 lithium batteries.
1. Brand supplier: Purchase 18650 lithium batteries from well-known brands, which usually have good reputation and after-sales service.
2. Electronic product manufacturers: Purchase original batteries. Due to the strict requirements of electronic device manufacturers for battery quality, the 18650 lithium batteries they supply are relatively reliable in quality.
3. Professional battery stores: Choose professional battery stores to purchase, which usually have strict quality control and after-sales guarantee.
