There is inertia of using. In the absence of competition, it is often unprofitable to replace one product with another, even if it is more effective. (In Russia we say: “We do not seek best from good”). To be precise, we can calculate the effect of using the best batteries and compare it with the costs of acquiring new batteries, changing the design, etc. Surely it is unprofitable, how unprofitable to build a new plant, if the old has not yet paid off. Novelty appears on the market only if it is beneficial to the user and gives profit to the manufacturer.

It may be attributed to higher energy and power, more number of charge discharge cycles, capacity, portability etc.of these batteries make them suitable for various applications.