MITSU Battery RJ40G for Dell Latitude 5520 5420 Precision 3560 - 3000 mAh (46 Wh)

This replacement battery restores dependable runtime to Dell Latitude 5420, Latitude 5520, and Precision 3560 laptops without the premium price of an original part. Built around a 4-cell lithium-ion pack with a smart chip, it delivers 46 Wh of energy and communicates charge status accurately to the system, so you see reliable percentage readings and avoid unexpected shutdowns during critical work.

Highlights

• Direct replacement for Dell part RJ40G / 0RJ40G
• 15.2 V nominal voltage, 3000 mAh capacity, 46 Wh energy
• Integrated smart chip for precise power management and compatibility
• A-grade Li-ion cells ensure stable output and long service life
• Comprehensive protection: overcharge, over-discharge, overcurrent, short-circuit, and over-temperature
• CE, RoHS, and FCC certified for safety and environmental compliance

In daily use

Expect a typical cycle life of 500+ charge/discharge cycles, meaning months of reliable performance before noticeable capacity fade. The internal installation keeps the laptop's profile unchanged, and the black housing blends seamlessly with the original design. Whether you are replacing a worn-out battery or keeping a spare for travel, this unit delivers consistent power for office tasks, presentations, and fieldwork.

Full specifications

• Battery Chemistry: Lithium-ion (Li-ion)
• Voltage: 15.2 V
• Capacity: 3000 mAh
• Energy: 46 Wh
• Number of Cells: 4
• Compatible Models: Dell Latitude 5420, Dell Latitude 5520, Dell Precision 3560
• Replaces Dell Part Numbers: RJ40G, 0RJ40G
• Product Type: Replacement Laptop Battery
• Condition: New
• Color: Black
• Certifications: CE, RoHS, FCC
• Protection Features: Overcharge, Over-discharge, Overcurrent, Short-circuit, Over-temperature
• Installation Type: Internal
• Expected Cycle Life: 500+ cycles
• Warranty: 12 Months
• Battery Technology: Smart Chip for optimized power management
• Cell Grade: A-Grade Cells

Final note

Keep your Dell laptop running at full capacity with this reliable, high-quality replacement battery.