The difference between rechargeable and rechargeable

What's the difference between rechargeable and rechargeable? The answer to this question is: First, the restrictions on the use of venues are different. Rechargeable products are destined to be used only in places with sockets, which has caused restrictions and cannot be moved in large areas. The rechargeable version itself has a power supply to provide power for the product, so the rechargeable version will be less affected by the environment. Second, the charging type of the same product with different prices must be cheaper than the charging type.