DELL MR90Y 14R 3421 5421 5437 3521 5537 6 Cells 4000mAh

DELL MR90Y 14R 3421 5421 5437 3521 5537 6 Cells 4000mAh

The DELL MR90Y 14R 3421 5421 5437 3521 5537 6 Cells 4000mAh is a high-performance replacement battery designed for Dell’s Inspiron 14, Inspiron 15, Inspiron 17, Latitude, and Vostro laptop series. These models—Inspiron 14 3421, 14R 5421, 14R 5437, Inspiron 15 3521, 15R 5521, 15R 5537, Inspiron 17 3721, 17R 5737, Latitude 3440, 3540, and Vostro 2421, 2521—are widely used in homes, offices, education, and everyday computing where reliability, long battery life, and stable power delivery are essential .

Dell Inspiron and Vostro laptops are built for demanding workloads such as office productivity, online learning, web browsing, and multimedia entertainment. Over time, their internal batteries degrade, resulting in shorter runtime, overheating, slow charging, or sudden shutdowns. Replacing your worn-out battery with this 4000mAh 6-cell MR90Y model restores dependable performance, stable power delivery, and long-lasting mobility. This battery is engineered to support these classic Inspiron models that must perform consistently throughout the day .

With a strong 4000mAh capacity, 11.1V output, and a robust 6-cell configuration, this battery provides reliable energy for users who rely on their Inspiron or Vostro laptop for office work, online classes, streaming, and everyday tasks. Whether you are working at home, in the office, or traveling, this replacement battery ensures your device continues performing at its best .

Product Specifications – DELL MR90Y 14R 3421 5421 5437 3521 5537 6 Cells 4000mAh

• Brand: Dell

• Compatible Brand: Dell

• Compatible Devices: Inspiron 14 3421 / 14R 5421 / 14R 5437 / Inspiron 15 3521 / 15R 5521 / 15R 5537 / Inspiron 17 3721 / 17R 5737 / Latitude 3440 / Latitude 3540 / Vostro 2421 / Vostro 2521

• Battery Model: MR90Y

• Compatible Part Numbers: MR90Y, XCMRD, 0MF69, 00MF69, 6HY59, 4DMNG, 8RT13, 8TT5W, 68DTP, 6XH00, 9K1VP, VR7HM, V1YJ7, W6XNM, 312-1390, 6K73M, YGMTN, MK1R0, 312-1392, 49VTP, 312-1433, N121Y, G35K4

• Voltage: 11.1V

• Capacity: 4000mAh

• Watt-hours: 44Wh

• Cell Configuration: 6 Cells

• Battery Type: Replacement Laptop Battery

• Condition: Brand New

• Warranty: 6 Months

Key Features – DELL MR90Y 14R 3421 5421 5437 3521 5537 6 Cells 4000mAh

• High-capacity 4000mAh for extended runtime in everyday use

• Robust 6-cell configuration optimized for Inspiron, Latitude, and Vostro laptops

• Perfect compatibility with Inspiron 3421, 5421, 5437, 3521, 5521, 5537, 3721, 5737

• Improved thermal stability for cooler operation under daily workloads

• Stable power delivery for office productivity, online learning, and streaming

• Designed to meet Dell’s performance standards

• Supports long-term battery health and consistent charging cycles

• Ideal for students, professionals, home users, and everyday commuters

Compatibility – DELL MR90Y 14R 3421 5421 5437 3521 5537 6 Cells 4000mAh

Compatible Dell Inspiron models:

• Inspiron 14 3421

• Inspiron 14 3437

• Inspiron 14R 5421

• Inspiron 14R 5437

• Inspiron 15 3521

• Inspiron 15 3537

• Inspiron 15R 5521

• Inspiron 15R 5537

• Inspiron 17 3721

• Inspiron 17 3737

• Inspiron 17R 5721

• Inspiron 17R 5737

Compatible Dell Latitude models:

• Latitude 3440

• Latitude 3540

Compatible Dell Vostro models:

• Vostro 2421

• Vostro 2521

Supported battery codes:

• MR90Y

• XCMRD

• 0MF69

• 00MF69

• 6HY59

• 4DMNG

• 8RT13

• 8TT5W

• 68DTP

• 6XH00

• 9K1VP

• VR7HM

• V1YJ7

• W6XNM

• 312-1390

• 6K73M

• YGMTN

• MK1R0

• 312-1392

• 49VTP

• 312-1433

• N121Y

• G35K4

This battery is specifically engineered for these laptop models, ensuring a perfect fit and seamless functionality. Important: The MR90Y is the 6-cell option for these laptops. The XCMRD is the 4-cell alternative. The 6-cell battery will protrude from the back of the system, while the 4-cell fits flush internally . Please verify your original battery type before ordering.

Why This Battery Matters – DELL MR90Y 14R 3421 5421 5437 3521 5537 6 Cells 4000mAh

Dell Inspiron and Vostro laptops are widely used for:

• Business productivity and office work

• Online learning and education

• Web browsing and social media

• Multimedia streaming and entertainment

• Home and personal computing

• Light creative work

A degraded battery can cause:

• Reduced runtime

• Overheating

• System instability

• Random shutdowns

• Charging issues

Installing a new 4000mAh battery restores mobility, stability, and reliability. This ensures your Inspiron or Vostro laptop continues performing without interruptions, whether you’re working indoors, studying, or on the move.

Signs You Need a Replacement – DELL MR90Y 14R 3421 5421 5437 3521 5537 6 Cells 4000mAh

• Rapid battery drain even after full charge

• Reduced runtime compared to when the device was new

• Unexpected shutdowns during daily workloads

• Battery failing to charge or stuck at low percentage

• Overheating or swelling

• Laptop only works when plugged in

• Battery service warnings in Windows

If you experience any of these symptoms, replacing your battery is essential for safe and reliable performance.

Installation Guide – DELL MR90Y 14R 3421 5421 5437 3521 5537 6 Cells 4000mAh

Important: The MR90Y 6-cell battery will protrude from the back of the laptop, while the 4-cell XCMRD battery fits flush. Please confirm your original battery type before ordering .

1. Power off the laptop completely

2. Disconnect the charger and all peripherals

3. Slide the battery release latches to eject the old battery

4. Insert the new MR90Y battery until it clicks into place

5. Charge fully before first use

Note: If your laptop does not recognize the new battery or it goes to 0% instantly, change the Power Manager Charge Setting to “Standard” mode, then discharge and recharge the battery 3-4 times .

Why Buy from BlueArc Computer Solutions Kenya?

BlueArc Computer Solutions supplies high-quality laptop replacement parts including batteries, chargers, keyboards, screens, and accessories. We guarantee compatibility, reliability, and customer satisfaction, with nationwide delivery available.

Website: www.bluearccomputer.co.ke
Email: info@bluearccomputer.co.ke