Dell Latitude 5420 / 5520 3-Cell OEM Battery Replacement – WY9DX / 005R42 / 0M3KCN – 11.4V 42Wh – Genuine Grade Li-ion for Latitude 5420, 5520, Precision 3570, 3571 Series

Description

Breathe New Life Into Your Dell Latitude Laptop

Is your Dell Latitude 5420 or 5520 struggling to hold a charge? Does it shut down unexpectedly or keep you tethered to the wall outlet? This high-performance 3-cell replacement battery is the perfect solution to restore your laptop’s mobility and productivity.

Premium Quality & Reliable Performance

This battery is manufactured using Grade A Lithium-Ion cells for fast charging and low power consumption. It features built-in overcharge, over-discharge, and short-circuit protection for safe and stable operation. CE/FCC/RoHS certified, this battery meets the highest safety and quality standards.

ExpressCharge Boost Enabled

Designed specifically for newer Dell Latitude models, this 3-cell battery supports Dell’s ExpressCharge Boost technology, giving you up to 35% charge in just 20 minutes – perfect for busy professionals on the go.

Wide Compatibility (Newer Models Only)

This 3-cell battery (11.4V, 42Wh) is specifically designed for newer Dell Latitude and Precision models. It is NOT compatible with older E-Series (E5420/E5520/E6420) laptops that use 11.1V 6-cell batteries.

Compatible with:

• Dell Latitude 5420 (all variants)

• Dell Latitude 5520 (all variants)

• Dell Latitude 5430 (select variants)

• Dell Latitude 5530 (select variants)

• Dell Precision 3570

• Dell Precision 3571

• Dell Vostro 3520 (select variants)

Replacement Part Numbers

This battery is a direct replacement for the following Dell part numbers:

• WY9DX

• 005R42

• 0M3KCN

• WK3F1

• RJ40G

• CN-0M3KCN

• CN-005R42

Easy Installation

Designed as a direct drop-in replacement, installation is quick and straightforward. Remove the bottom cover, disconnect the old battery, and connect the new one – no extra calibration needed.

What’s in the Box: 1x Dell Latitude 3-Cell Battery (11.4V, 42Wh)

Warranty: 12-month warranty for peace of mind

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Product Specifications