18650 7.4V 4000mAh Lithium Ion Battery for LED Light / Bluetooth Speaker

18650 7.4V 4000mAh Lithium Ion Battery for LED Light / Bluetooth Speaker. Customizable Solutions: Supports OEM and ODM services with full customization from samples or designs. High Capacity Options: Available in 4000mAh, 6000mAh, and 7800mAh configurations for diverse needs. Robust Safety Protection: Features overcharge, over-discharge, short-circuit, and temperature control protection. Wide Application Range: Suitable for drones, power banks, vacuums, speakers, and portable electronics. Long Cycle Life: Ensures durability with 500 to 1000 charge cycles depending on the model. MSDS Certified: Products hold MSDS certification for safe transportation and usage. Stable Supply Chain: Monthly production capacity exceeds 3.5 million cells for bulk orders. Comprehensive Warranty: Offers a one-year or two-year warranty period for product reliability.