MR90Y Replacement Battery Specification
- Battery Model: MR90Y
- Capacity: 6000mAh / 65WH
- Voltage: 11.1V
- Battery Type: Li-ion
- Cell: Made in China, high quality guarantee
- Color: Black
- Condition: Replacement Battery (100% Brand New, 1-year warranty!)
Replace Part Numbers
- MR90Y
- XCMRD
- XRDW2
- YGMTN
- 6KP1N
Compatible Laptop Models
- Dell Inspiron 14 3421
- Dell Inspiron 14 3437
- Dell Inspiron 14 5421
- Dell Inspiron 14 N3421
- Dell Inspiron 14 N5421
- Dell Inspiron 14R 3421
- Dell Inspiron 14R 5421
- Dell Inspiron 14R N3421
- Dell Inspiron 14R N5421
- Dell Inspiron 15 3521
- Dell Inspiron 15 5521
- Dell Inspiron 15 5537
- Dell Inspiron 15 N3521
- Dell Inspiron 15 N5521
- Dell Inspiron 15R 3521
- Dell Inspiron 15R 5521
- Dell Inspiron 15R N3521
- Dell Inspiron 15R N5521
- Dell Inspiron 17 3721
- Dell Inspiron 17 5721
- Dell Inspiron 17 5737
- Dell Inspiron 17 N3721
- Dell Inspiron 17 N5721
- Dell Inspiron 17R 3721
- Dell Inspiron 17R 5721
- Dell Inspiron 17R N3721
- Dell Inspiron 17R N5721
- Dell Latitude 14 3000
- Dell Latitude 15 3000
- Dell Latitude 3440
- Dell Latitude 3540
- Dell Latitude E3440
- Dell Latitude E3540
- Dell Vostro 2421
- Dell Vostro 2521
Product Features
- Extended Battery Life: 6000mAh high-capacity battery provides up to 60% more runtime than standard 40WH batteries, perfect for long work sessions, travel, and all-day productivity.
- Wide Compatibility: Works seamlessly with Dell Inspiron 14, 15, 17 series and Latitude 3000 series laptops, making it a versatile replacement for multiple Dell notebook models.
- Premium Li-ion Technology: Advanced lithium-ion cells deliver stable voltage output, efficient charging cycles, and longer battery lifespan with support for hundreds of charge cycles.
- Easy Installation: Direct drop-in replacement for original Dell battery with simple plug-and-play design, no technical expertise or tools required for battery swap.
- Comprehensive Safety: Built-in protection circuitry guards against overcharge, over-discharge, short circuit, and overheating to ensure safe operation and protect your valuable laptop.
- Superior Value: High-capacity alternative to standard batteries at competitive pricing, extending your Dell laptop's mobility and productivity without breaking the bank.
Why Choose This Battery?
This 65WH high-capacity battery delivers 60% more runtime than standard batteries, giving you the power to work, study, or play without constantly searching for outlets. Compatible with Dell Inspiron 14/15/17, Latitude 3000, and Vostro 2421/2521 series, it's the perfect upgrade for professionals, students, and travelers who need reliable all-day performance.
Built with premium lithium-ion cells and comprehensive safety protection, this battery offers OEM-quality performance at an affordable price. Each unit is backed by a 1-year warranty and rigorous quality testing, ensuring you get dependable power that keeps your Dell laptop running strong for years to come.
Note:
This is not a complete list or inclusion of all compatible laptop models. You can open the back of your laptop to check the original battery model. If you have any compatibility questions, please contact us online.The casing is made of durable materials, the mainboard adopts advanced technology, and the battery core is produced with high-quality raw materials to ensure that it will not be damaged after long-term use.
Our products are equipped with multiple protection technologies such as overvoltage, overcurrent, and overcharge to effectively protect the safety of batteries and equipment.
Shipping Methods
| Shipping Methods | Ship To | Est. Delivery Time | Shipping Cost | Taxes & Fees |
|---|---|---|---|---|
| USPS / DHL | United States | 10-15 business days | Free | Free |
| Canada Post | Canada | 10-15 business days | Free | Free |
| Royal Mail / Yodel | United Kingdom | 15-20 business days | Free | Free |
| DHL | Germany | 15-20 business days | Free | Free |
| La Poste | France | 15-20 business days | Free | Free |
| Correios | Mexico/Spain/IT | 15-25 business days | Free | Free |
| Local Carriers | SE Asia / East Asia | 5-10 business days | Free | Free |
| Local Carriers | Rest of Europe | 20-25 business days | From $5.99 | Free |
| Local Carriers | UAE / Saudi Arabia / Israel | 16-20 business days | From $7.99 | Free |
📦 Shipping & Tracking Information
Looking for faster shipping? We offer local warehousing services. Please visit our "Local Delivery" page for items available for immediate dispatch.
1. How to Track Your Package:
Please choose the tracking link that corresponds to your destination:
- Europe & The Americas: 17track.net/en
- The Middle East: mena56.com
- Asia: 17exp.kingtrans.cn
Need Help?
If you cannot find your package on any of the above websites, please contact us immediately.
📧 Email: sales@batterymall.com / info@batterymall.com
📱 WeChat/WhatsApp: (+86) 198 6775 1872 / (+86) 191 2767 3310
🚚 Estimated Delivery Time
(1) Shipping from China:
- To Asia: 5-20 business days
- To North America: 10-15 business days
- To Europe/South America: 15-20 business days
(2) Shipping from Local Warehouses:
- From US Warehouse: 3-5 business days
- From European Warehouse: 2-10 business days
- From Russian Warehouse: 3-5 business days
Please note: Exact arrival times depend on the specific country and customs processing.
⚠️ Tax & Customs Information:
Global product prices include customs duties (some countries require a tax ID). Please refer to the settlement invoice for specific shipping costs. Special handling is required if your package is inspected.
Payment Methods
Paypal
Payments by PayPal, no PayPal account required. Paypal is safe and free for buyers.
PayPal account: Payment@batterymall.com
Account Name: ShenZhen KingSener Science and Technology Co., Ltd
Credit or debit card
VISA, MasterCard, the United States n Express,Maestro & Laser Card, APPLE Pay,etc.
PayPal never shares your financial information with us.
WeChat Pay
Currently only supports QR code payment. Please contact WeChat customer service and go to WeChat App to scan the QR code to complete the payment.
Google Pay
Pay with Google Pay, which is more convenient and faster.
Apple Pay
If you use an Apple device, you can use Apple Pay to pay, which is more convenient and faster.
Bank Transfer
Q&A
Quick FAQ:Laptop Battery Care & Troubleshooting
- How long does a KingSener battery last?2 to 3 years (approx. 500-800 charge cycles) under normal temperatures.
- Laptop says "Battery Not Detected". How to fix?1. Hard Reset: Unplug AC, remove battery, hold power button for 30 seconds.
2. Clean Contacts: Wipe metal connection pins.
3. Reset Drivers: Uninstall battery drivers in Device Manager, then restart.
4. Update BIOS: Ensure motherboard firmware is up to date. - Can I leave my laptop plugged in 24/7?Yes, the built-in TI chip prevents overcharging. Tip: To prevent long-term cell swelling, unplug and drain the battery to 40% twice a month.
- How do I store a laptop battery long-term?Store it at 50% charge in a cool, dry place. Never store at 0% or 100%. Cycle the battery every 3 months to maintain chemical activity.
-
Are KingSener batteries safe?Yes. All batteries feature built-in IC protection against short-circuits, over-voltage, and overheating. Fully CE, FCC, and RoHS certified.