Batería Lipo recargable de Ion litio polímero de alto rendimiento - 4400mAh, 3.7V, modelo 18650
HOW TO: Use Lithium 3.7v batteries in small Arduino projects.
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Lithium Ion battery - 3.7V 4400 mAh
How can i charge 2 3.7v li-ion batteries using 1 power source. - General Electronics - Arduino Forum
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