The biggest disadvantage of 18650 Lithium Battery is that his volume has been fixed, and installed in some notebooks or some products are not very good positioning, of course, this drawback can also be said to be advantages.
18650 lithium batteries are prone to short-circuit or explosion, and also relative to polymer lithium batteries.
18650 production of lithium batteries are needed to protect the line, to prevent the battery from being excessively charge and discharge, this result is a disadvantage of Lithium Batteries, because the lithium battery materials used are lithium cobalt oxide material, and lithium cobalt acid lithium battery materials not large current discharge, poor safety.
18650 Lithium Battery production conditions requires high, contrast to the general battery production, 18650 lithium battery production conditions are very demanding, which will undoubtedly increase production costs.