Professional Custom 803040 1000mAh 3.7V Small Rechargeable Battery
Ultra-compact 803040 lithium-ion cell delivers high energy density (1000mAh) in a featherlight 3.7V package. Precision CNC-milled aluminum casing ensures heat dissipation and crush resistance. Premium polymer electrolyte enables 500+ charge cycles with <0.5% monthly self-discharge. Built-in PCM protection against overcharge/over-discharge. Ideal for wearable tech, eye massagers, compact digital devices, and IoT sensors requiring stable micro-power solutions. Direct factory pricing with bulk discounts. Worldwide shipping with compliance certifications (UN38.3, MSDS, RoHS). Custom OEM/ODM available.