Asus B31N1842 44Wh 11.52V Li-ion Laptop Battery for VivoBook S15 X513 X531

Asus B31N1842 battery price in bd is listed here at QASWATEC. This is a new 44Wh, 11.52V Li-ion replacement pack in black, made for the Asus VivoBook S15 family and its X513 and X531 cousins. When your laptop now barely lasts through a class or a meeting, a fresh B31N1842 puts a full day of use back in your bag.

Key Features

• Part number: B31N1842
• Capacity: 44Wh
• Voltage: 11.52V
• Cell type: Li-ion
• Condition: new, black finish
• Warranty: 1 year, listed with the product

Compatible Laptops

Vital lists this pack for Asus VivoBook S15 X513EA, X513EP and X513EQ, X531F and X531FA, K531F, S531F, S531FA and S531FL, V531F, V531FA and V531FL, plus S5500F, S5500FL, V5050E and V5050EA series laptops. Always match your exact model before ordering.

Signs the Battery Needs Replacing

Look for charge that drains within an hour, a laptop that shuts down the moment you unplug it, or a battery percentage that jumps from half to zero. These show the cells have worn out.

Why Replace It Early

A tired battery forces the laptop to stay on the charger all day and can cut power while you work, which risks unsaved files. An early swap keeps the laptop truly portable and protects your documents.

What You Get

You get one new B31N1842 battery pack. Our team can check the fit for you before you buy, so you avoid a wrong order and a second trip to the shop.

Care Tips for Longer Life

Keep the laptop away from heat, avoid leaving it at full charge on the adapter for weeks, and run a full cycle once a month, which slows capacity loss.

Before You Order

Read the model sticker under your laptop, compare it with the list above, and check the part number printed on the old battery. If you are unsure, bring the laptop to the shop or send us the model name and we will confirm it.

Buy Asus B31N1842 Battery from QASWATEC

QASWATEC at Elephant Road, Dhaka has supplied laptop parts since 2010. Visit the showroom or order online for a replacement with clear warranty terms and honest fitting advice from people who handle laptops every day.