A conventional small square battery is indeed not enough to play in terms of space, but one of the biggest features of alien batteries like circular batteries is that it is customized according to customer needs. The most demanded shape can match the internal space of a variety of Bluetooth headsets.

　　Round batteries are not just rounds like coins, they can change its height according to the needs of customers. Customize a circular battery, as long as you need to provide the radius (R), height (H), and thickness (T) of the battery, so that you can be perfectly matched according to your remaining space. Different battery.

　　Use a circular battery to replace its original battery. Is this the perfect match? Do you have a picture in your mind?

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