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Smart Earbuds Battery are mostly polymer lithium-ion battery, a few are button cell (or coin battery). Compared to button cell. polymer lithium-ion battery is more flexible, can adapt to the internal space of your Earbuds, bringing greater capacity.
You can purchase existing Smart Earbuds Battery models from us. We also provide customized service--because of the large number of models, the list of models on this website is not complete. If you have other needs, please let us know and we will be happy to provide you with other existing models or solutions.
And welcome to visit our company and factory also, please do not hesitate to ask us if you have any questions.