Dell RJ40G WY9DX 42Wh 63Wh Li-ion Laptop Battery for Latitude 5420 5520

Dell RJ40G battery price in bd is listed here at QASWATEC. This is a brand new Li-ion replacement pack, also sold as WY9DX, made for the Dell Latitude 14 5420, Latitude 15 5520 and Precision 15 3560. The supplier lists two ratings for this model, 42Wh at 11.4V and 63Wh at 15.2V, so check which one your laptop uses.

Key Features

• Part numbers: RJ40G and WY9DX
• Capacity: 42Wh or 63Wh
• Voltage: 11.4V or 15.2V
• Cell type: Li-ion
• Condition: brand new, black finish
• Warranty: 1 year, listed with the product

Compatible Laptops and Part Numbers

Vital lists this pack for Dell Latitude 14 5420, Latitude 15 5520 and Precision 15 3560, plus the codes P137G, P137G001, P104F, P104F001 and P104F002. It replaces RJ40G, WY9DX, 01K2CF, 075X16, 0WK3F1, 0M3KCN and 005R42. Always match your exact model before ordering.

Signs the Battery Needs Replacing

Look for a charge that drains within an hour, a laptop that shuts down when you unplug it, or a battery that stops at a low percentage.

Why Replace It Early

A worn battery makes a business laptop unreliable on the move, and sudden power loss can cost unsaved work. Replacing it early keeps the machine dependable.

What You Get

You get one new RJ40G 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

Check the model name on your laptop and compare it with the list above. Tell us whether you need the 42Wh or the 63Wh version, or send the model name and we will confirm it. The old battery label should show RJ40G or WY9DX.

Buy Dell RJ40G 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.