Channels for purchasing 18650 batteries and misconceptions to avoid.
Choose a reliable purchasing channel
To avoid buying counterfeit or refurbished batteries, it is recommended to purchase them through authorized dealers, brand flagship stores on well-known e-commerce platforms, or reputable professional battery sellers. Do not purchase from small shops with unknown sources for cheap prices.
Common Misconceptions to Avoid
Only looking at price: 18650 batteries with good quality have a high cost, and batteries priced lower than the normal market price are highly likely to have problems.
Just looking at capacity: As mentioned earlier, high capacity does not necessarily mean good performance, especially for high-power devices.
Superstition for ultra-high capacity: Currently, the highest practical capacity of mainstream brand 18650 batteries is around 3500mAh, and almost all market claims that the capacity far exceeds this value (such as 9900mAh, etc.) are fake products with false labels.
Mixing batteries of different brands, models, and levels of age: When multiple batteries need to be used in series or parallel, it is necessary to use batteries of the same brand, model, batch, capacity, and internal resistance. Otherwise, it may lead to a decrease in battery performance, shortened lifespan, and even safety hazards.
