Replacement RJ40G 63Wh 15.2V Battery for Dell Latitude 5420

Replacement battery for dell Latitude 5420 63Wh 15.2V RJ4OG 075X16 01K2CF 0WK3F1 005R42 4-Cell

【Specifications】

Part Number:RJ40G battery

Type: Li-ion;

Voltage: 15.2V;

Capacity: 63Wh 3941mAh;

Color: Black;

Condition: New;

( (NOTE: There are two types of battery(type 63Wh RJ40G and type 42Wh WY9DX)for the above laptop models. this is replacement battery for type 63Wh RJ40G!

REPLACE BATTERY PART : 63Wh RJ40G 01K2CF 075X16 0WK3F1 005R42 RJ4OG.

FIT LAPTOP MODELS :

Replacement battery for Dell Latitude 14 5420 Series,

Dell Latitude 15 5520 Series,

Dell Precision 15 3560 Series,

Dell model P137G P137G001 P104F P104F001 P104F002 .

Frequently Asked Questions

How to Find Your Dell Computer Model Number?

Look on Your Device.
Check the sticker on the bottom of your laptop or back of your desktop. Look for "Model" or "Service Tag".

Or Check on Your Screen (Windows)

Start → Settings → System → About     Find Device Name or Model.

How do I find my dell Latitude 5420 laptop battery part number?

1>Power off your laptop and remove the battery. Check the battery label — look for DP/N, Dell P/N, or Part Number.

The part number is printed on the sticker/label on your original battery. Laptop model alone is not enough to confirm compatibility.

2>BIOS — press F2 → Battery Information.

3>Dell Support — enter the laptop’s Service Tag and check the battery parts.

Can I swap between RJ40G 15.2V 63WH replace WY9DX 11.4V 42WH?

NO, they are NOT interchangeable. RJ40G 15.2V ; WY9DX 11.4V. Different voltage & BMS circuit. Installing the wrong battery will fail to boot and may damage the motherboard.

(They share identical physical connector & mounting screw positions, so the battery can be physically installed. However, Dell does NOT officially support cross‑voltage swapping.

Many users reported they can boot and charge after installation, but a startup BIOS battery warning may pop‑up.

There are potential risks of abnormal charging, intermittent power‑drop.

We strongly recommend you replace with the exact same part‑number as your original battery.)

RJ40G and WY9DX , why can't they swap?

Same watt-hour, but different nominal voltage (RJ40G=15.2V; WY9DX=11.4V).

The motherboard charging circuit and pin assignment differ. Installing wrong PN will cause battery not detected or safety risk.

Is this an original Dell battery?

No!This is a high-quality replacement battery designed to meet OEM specifications and provide reliable performance comparable to the original battery.

This product is a replacement battery and is not an original Dell-branded battery. This replacement battery is designed for compatibility with the listed Dell laptop models.

Is this battery compatible with Dell Latitude 5420?

Yes, it is fully compatible with Dell Latitude 5420 and related models listed above.

How do I check compatibility?

Please compare your original battery part number with (RJ40G)

What is the voltage and capacity of this battery?

The battery is  15.2V 63Wh of the above laptops. Please verify that these specifications match your original battery or your laptop's required specifications.

When Should You Replace Your Dell Latitude 5420 Battery?

Your Dell Latitude 5420 battery may need replacement if you experience:

• Short battery life
• Fast battery drain
• Unexpected shutdown
• Battery not charging
• Reduced battery health

 

 

Free shipping！We can ship to over 120 countries and regions. We will usually ship it out within 2-3 days!

Payment by Paypal | 1-Year Warranty | 60 Day Money Back Guarantee

8-hour online service（08:00‑12:00 & 14:00‑18:00 (UTC‑4)) & email (Order@battery4pc.com)response within 24 hours.

Tags: replacement dell Latitude 5420 battery, rechargeable dell Latitude 5420 battery, Latitude 5420 battery sale, replacement dell Latitude 5420 original batttery, Dell Latitude 5420 battery replacement