18 Month Warranty

120%+ Battery Life Patented Technology
  • 4 Cells Dell 991XP 78V9D FJCY5 07G07 Series Replacement Laptop Notebook Battery 14.8V 40Wh

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Premium 4 Cells Dell 991XP 78V9D FJCY5 07G07 Series Replacement Laptop Notebook Battery 14.8V 40Wh

  • Model #: Dell M5Y1K Battery
  • List Price: AU$150.00
  • Price: AU$59.68

  • You Save: AU$90.32 (60%)

  • Condition:   New
  • Warranty:   18 Months
  • Availability: 100+ available / 10 sold
  • Postage:     2-5 Business Day Standard Shipping
  • Location:     Sydney, NSW, Australia

  • Premium quality Extreme performance 18 month warranty 30 day money back

    Qty Price Discount
    1-4 AU$59.68 No
    5-9 AU$57.88 3%
    10-19 AU$56.69 5%
    20-29 AU$55.49 7%
    30-49 AU$54.90 8%
    50-99 AU$53.72 10%
    100+ AU$52.52 12%

  • Price: AU$59.68

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      Product Description:

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      Type: Li-ion

      Cells: 4-Cell

      Voltage: Compatible with 14.4V / 14.8V only

      Capacity: 40Wh

      Color: Black


      Compatible Part Numbers:

      991XP 78V9D FJCY5 07G07


      Compatible Laptop Models:

      Inspiron 14-3451 

      Inspiron 14-3452 

      Inspiron 14-3458 

      Inspiron 14-5451

      Inspiron 14-5455

      Inspiron 14-5458

      Inspiron 14-5459

      Inspiron 15-3451

      Inspiron 15-3551

      Inspiron 15-3552

      Inspiron 15-3558 

      Inspiron 15-5551 

      Inspiron 15-5555 

      Inspiron 15-5558 

      Inspiron 15-5559 

      Inspiron 15-5758

      Inspiron 17-5755

      Inspiron 17-5758

      Inspiron 17-5759 


      Vostro 14 3458

      Vostro 15 3558 


      N3451 N3452 N3458 N3551 N3552 N3558

      N5451 N5455 N5458 N5459 N5551

      N5555 N5558 N5559 N5755 N5758
















      Product Features


      • 18 month warranty, 30 day money back & 100% customer satisfaction guarantee, 100,000+ happy customers!
      • #1 laptop battery life in industry. 800+ full charges & discharges. 20%+ more than industry average in tests.
      • New replacement Dell M5Y1K battery. Premium Japanese cells with industry-leading patented technologies!
      • Built-in safeguards protect against short-circuit, overvoltage, overcurrent, overcharging and overheating. Built to be reliable.
      • Manufactured to the highest quality available in industry with true enhanced performance.
      • Average run-time: 4-6 hours (6 or 8 cells, 4400-5200mAh), 6-8 hours (9 or 12 cells, 6600-8800mAh).
      • 50%+ off suggested retail price. The most durable Dell M5Y1K battery at an affordable price.
      • No memory effect and environmentally friendly.
      • Certifications: CE, FCC, RoHS, ISO9001, UL.

      * This is an 100% compatible replacement part. All trademarks are the property of their respective owners.

      Company Profile


      We are a professional manufacturer of laptop accessories with a wide selection of models compatible with major laptop brands. A complete set of manufacturing and testing processes, including Molding & Injection, COB Testing, Automatic SMT, Aging Testing, and Quality Control, ensures us to fulfill the fast-rising market demands with the best quality of products. Our products are precision-engineered and rigorously tested for voltage, current, compatibility and safety, and are guaranteed to meet or exceed the specifications of the original equipment manufacturer. Our state-of-the-art PCB designs, patents and proprietary technologies add huge value to the product stability, safety and performance, and have made us a true leader in the ever-changing market.

      Our company is ISO9001 certified and all of our products have passed CE and FCC certifications. The faith of our R&D and production team is to pay endless efforts on product quality. In order to achieve consistent manufacturing quality, particularly in mass production phases, our Quality Control keeps close eyes on raw materials and components and ensures that our manufacturing process and products are always in compliance with both industrial and international standards.

      Customer Reviews
      My battery shipped FAST and was a perfect fit for my M1530. Very pleased with the price. My laptop now runs on battery like it did when it was new. DEFINITELY RECOMMEND!

      Customer Isabelle

      A replacement has been received. Excellent warranty service. Thank you!

      Customer Nolan

      I lost my laptop adapter and found the replacement here. The site was easy to use, and my order arrived in 3 days. I have to thank you for getting my laptop up and running again :)

      Customer Nathaniel

      We are a high school. Searched a number of sites for the battery for our laptops and found this site. Not only was the product a great price (better than anyone else), their batteries lasted even longer than the originals. Thank you for a great experience!

      Customer Alice

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