Small Batteries 3.7V 582728 400mAH Rechargeable Lithium Ion Batteries
High-quality lithium-ion cells with stable 3.7V output and 400mAH capacity for long-lasting performance. Precision-engineered with durable lithium-ion chemistry, ensuring consistent power delivery and extended cycle life. Compact design (582728 size) fits seamlessly into small electronics like wireless earbuds, mini drones, and medical devices. Built-in protection circuit prevents overcharging, overheating, and short circuits for enhanced safety. Ideal for DIY projects, RC toys, LED lights, and portable gadgets requiring reliable rechargeable power. Bulk pricing available—order in volume for unbeatable wholesale discounts. Global shipping, guaranteed lowest prices.