GreenTechLLC C31N1636 11.49V 47WHR laptop battery

GreenTech C31N1636 47 Wh replacement battery

The GreenTech C31N1636 is a 47 Wh lithium-ion battery built for ASUS VivoBook Pro 15 models including the M580, N580, NX580, UX502 and X580 series. It operates at 11.49 V and uses a three-cell design to match the original voltage and capacity specifications. The pack replaces OEM part numbers C31N1636, 0B200-02580000, 0B200-02580100 and 0B200-02580200 and carries CE, FCC and RoHS safety certifications. It is supplied new and tested for stable current and low self-discharge.

Owners of compatible VivoBook Pro 15 laptops

This unit fits the listed ASUS models only; it will not work in other VivoBook sizes, other brands or devices that require a different voltage, connector or cell count. Buyers who need a higher capacity pack, a different form factor or an original ASUS battery should look elsewhere. The three-cell layout limits total energy to 47 Wh, so users expecting longer runtime than the factory original will not gain it here.

47 Wh three-cell pack for standard workloads

The 4090 mAh capacity at 11.49 V delivers 47 Wh, which comfortably powers typical office tasks, web browsing and video playback for a few hours on a full charge. Heavy loads such as sustained gaming, rendering or virtual machines will drain the pack more quickly and may require frequent recharging. The slim 8.35 x 3.65 x 0.25 inch profile fits the original bay without modification, but the fixed capacity means runtime cannot be extended beyond the factory specification.