M5Y0X is a high-capacity 11.1V 97Wh (9000mAh) 9-cell Li-ion replacement battery for Dell Latitude E5420, E5520, E6420, E6430, E6520 and Inspiron 14R, 15R, 17R series. Korean cells, a multi-layer BMS and a 100% brand-new build deliver extended runtime.
Technical Specifications
| Specification | Value |
|---|---|
| Battery Model | M5Y0X |
| Voltage | 11.1V |
| Capacity | 9000mAh / 97Wh |
| Battery Type | Li-ion |
| Cells | 9 Cells (Korea) |
| Color | Black |
| Condition | 100% Brand New |
| Warranty | 1 Year |
Replace Part Numbers
- M5Y0X
- 71R31
- NHXVW
- 8858X
- N3X1D
- T54FJ
- X57F1
- T54F3J
- D0MX
- KJ321
- P8TC7
- TU211
- PRRRF
- PRV1Y
- T54F3
- P9TJ0
- UJ499
- WT5WP
Compatible Laptop Models
- Dell Latitude E6420 E6520 E5420 E5520 E6430 Series
- Dell Inspiron 14R / 15R / 17R Series
- Dell Inspiron 14R-4420 / 14R-5420 / 14R-5425 / 14R-7420 Series
- Dell Inspiron 15R-4520 / 15R-5525 Series
- Dell Inspiron 17R-4720 / 17R-5720 Series
- Dell Inspiron 14R-SE / 15R-SE / 17R-SE Series
- Dell Inspiron 14R-SE-4420 / 14R-SE-5420 / 14R-SE-7420 Series
- Dell Inspiron 15R-SE-4520 / 17R-SE-4720 / 17R-SE-5720 Series
- Dell Inspiron 14R / 15R / 17R Turbo Series
- Dell Inspiron 4420 / 4520 / 4720 / 5420 / 5425 / 5525 / 5720 / 7420 Series
- Dell Inspiron M421R / M521R Series
- Dell Inspiron N4420 / N4520 / N4720 / N5420 / N5720 / N7420 Series
- Dell Vostro 3460 / 3560 Series
Frequently Asked Questions
Will the M5Y0X 9-cell battery fit a Dell Latitude E6420?
Yes. It fits Latitude E5420, E5520, E6420, E6430 and E6520 series plus Inspiron 14R, 15R and 17R models.
Does M5Y0X replace the 71R31 and NHXVW batteries?
Yes. It replaces 71R31, NHXVW, T54FJ, X57F1, 8858X and all listed part numbers with identical 11.1V 97Wh output.
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.High Quality Garanteed
Our battery products are manufactured using high-quality materials and advanced technology to ensure stability and reliability.
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.
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
If you cannot use the above payment methods and the order amount exceeds HK$2000, please contact our customer service to obtain your bank account and pay via 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.