Dell Latitude 5420 / 5520 4-Cell OEM Battery Replacement – RJ40G / 75X16 / M033W – 15.2V 63Wh – Premium Grade Li-ion with ExpressCharge Boost for Latitude 5420, 5520, Precision 3560 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-capacity 4-cell replacement battery is the perfect solution to restore your laptop’s mobility and productivity – with even more power than the standard 3-cell battery.

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.

Longer Runtime – 63Wh Capacity

With a capacity of 63Wh (approximately 3941mAh) and 4-cell design, this battery provides significantly longer backup than the standard 42Wh 3-cell battery – perfect for professionals who need all-day productivity on the go.

ExpressCharge Boost Enabled

Designed specifically for newer Dell Latitude models, this 4-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 4-cell battery (15.2V, 63Wh) 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 Precision 3560

Replacement Part Numbers

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

• RJ40G

• 75X16

• M033W

• 01K2CF

• 0WK3F1 / WK3F1

• 0M3KCN

• 005R42

• WY9DX (Note: WY9DX is the 42Wh 3-cell version – this 63Wh 4-cell is the upgrade)

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 4-Cell Battery (15.2V, 63Wh)

Warranty: 12-month warranty for peace of mind

---

Product Specifications