Disadvantages of 18650 lithium batteries.deep cycle marine battery

　　The biggest drawback of the 18650 lithium battery is that its size is already fixed, making it difficult to locate when installed in some laptops or products. Of course, this drawback can also be said to be an advantage, compared to other polymer lithium batteries and other lithium batteries, which can be customized and can be changed in size. This is a disadvantage. Compared to some products with specified battery specifications, it has become an advantage.

　　18650 lithium battery production requires a protective circuit to prevent the battery from being overcharged and causing discharge. Of course, this is necessary for lithium batteries, which is also a disadvantage of lithium batteries, because the materials used in lithium batteries are mostly lithium cobalt oxide materials, and lithium cobalt oxide materials cannot discharge at high currents, resulting in poor safety.

　　The production conditions of 18650 lithium batteries require high requirements, which undoubtedly increases production costs compared to general battery production.

　　1. Low internal resistance: The internal resistance of polymer cells is smaller than that of general liquid cells. The internal resistance of domestic polymer cells can even reach below 35m Ω, greatly reducing the self consumption of the battery and extending the standby time of mobile phones, which can fully meet the international standards. This polymer lithium battery that supports high discharge current is an ideal choice for remote control models, becoming the most promising alternative to nickel hydrogen batteries.

　　2. 18650 lithium battery pack can be combined in series or parallel

　　3. Widely used: laptops, walkie talkies, portable DVDs, instruments, sound equipment, aircraft models, toys, cameras, digital cameras and other electronic devices.

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