Description
Product Information
- Item Condition: Brand New
- Color: Black
- Capacity: 3500 mAh / 42 Wh
- Output Voltage (Volts): 11.4 Volts
- Number of Cells: 3 Cells
- Package Included: 1 x Battery for Dell (Please note the design of this battery. This is the longer 3-cell variant with 11.4V)
- Warranty: 12 Months / 30-Day Return
Compatible Part Numbers (not all):
Dell 0M3KCN,Dell 0R89GC,Dell 0WK3F1,Dell 0WY9DX,Dell 451-BCSU,Dell M3KCN,Dell R89GC,Dell WK3F1,Dell WY9DX,
Compatible Laptop Model Series (not all):
Dell Latitude 14 (5420),Dell Latitude 14 (5420-0MCPY),Dell Latitude 14 (5420-2GDHH),Dell Latitude 14 (5420-767N6),Dell Latitude 14 (5420-9GY1Y),Dell Latitude 14 (5420-D2G5W),Dell Latitude 14 (5420-D5JCF),Dell Latitude 14 (5420-JNFDT),Dell Latitude 14 (5420-R2YP0),Dell Latitude 15 (5520),Dell Latitude 15 (5520-03F7V),Dell Latitude 15 (5520-0GMRX),Dell Latitude 15 (5520-47X2X),Dell Latitude 15 (5520-6GMRX),Dell Latitude 15 (5520-G8CGN),Dell Latitude 15 (5520-J563X),Dell Latitude 15 (5520-M141Y),Dell Latitude 15 (5520-R44J3),Dell Latitude 15 (5520-TRWDC),Dell Latitude 15 (5520-YDF4Y),Dell Precision 15 (3560),Dell Precision 15 (3560-0M2D4),Dell Precision 15 (3560-40WHJ),Dell Precision 15 (3560-CKHH9),Dell Precision 15 (3560-J2F43),Dell Precision 15 (3560-J6V7Y),Dell Precision 15 (3560-NXGV9),Dell Precision 15 (3560-WFG6N),Dell Precision 15 (3560-YCRJT)
42Wh WY9DX Battery Dell Latitude 5420 / 5520 & Precision 3560
Keep your professional workspace mobile with the WY9DX (42Wh) premium replacement battery. Specifically engineered for the Dell Latitude 5420, 5520 and the Precision 3560 Mobile Workstation, this 3-cell lithium-polymer battery provides a steady 3500mAh capacity. Designed as the Long Variant, it ensures a perfect physical fit and seamless electrical compatibility with your Dell business-class laptop.
Technical Specifications
| Part Number | WY9DX / M3KCN / R89GC / WK3F1 / 0WY9DX / 451-BCSU |
| Voltage | 11.4 Volts |
| Capacity | 3500 mAh / 42 Wh |
| Cell Configuration | 3-Cell Premium Li-Polymer (Long Design) |
| Condition | Brand New |
| Warranty | 12 Months / 30-Day Return |
⚠️ Fitment Check: Longer 3-Cell Variant
Please verify your original battery before ordering. Dell Latitude 5420/5520 series can use different battery sizes:
- This WY9DX is the Longer 3-Cell version (11.4V / 42Wh).
- If your original battery is shorter or has a 63Wh rating (Type RJ40G), this will not be the correct replacement.
Verified Series Compatibility
- Latitude 14 (5420)
- Latitude 15 (5520)
- Precision 15 (3560)
- Fits Part: WY9DX / 0WY9DX
- Fits Part: M3KCN / 0M3KCN
- Fits Part: R89GC / WK3F1
Why Choose the WY9DX Premium Battery?
- Enterprise Grade Performance: Built with premium cells to meet the rigorous demands of Dell Latitude and Precision hardware.
- Smart Battery Communication: Fully compatible with Dell Power Manager and BIOS for accurate health monitoring and original charging speeds.
- Perfect Mechanical Alignment: Precision-molded to match the internal screw points of the 5420/5520 chassis perfectly.
- Advanced Safety: Integrated protection circuits guard against over-charge, over-voltage, and short-circuiting.
Frequently Asked Questions
Q: How can I tell if I need the 42Wh or 63Wh version?
A: Check the “Type” printed on your old battery. If it says WY9DX or M3KCN, this 42Wh version is the one. If it says RJ40G, you need the 63Wh version.
Q: Is this an internal battery?
A: Yes, it is internal. Replacing it requires removing the bottom base cover of your laptop. Most users can complete this in about 10 minutes with a standard screwdriver.
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