Customized 400mAh 602040 3.7V Rechargeable Lithium-Ion Battery – OEM/ODM Support
High-energy-density lithium-ion cell ensures stable power output and long cycle life. Premium-grade materials with built-in PCM protection for overcharge, over-discharge, and short-circuit prevention. Ultra-thin 602040 form factor (6.0×20×40mm) fits compact devices—ideal for wearables, medical tools, IoT gadgets, and mini drones. Custom branding and specs available for bulk orders. Exclusive wholesale pricing for bulk buyers. Global shipping with strict QC compliance (RoHS/CE certified). Contact for tailored solutions.