DELL M5Y1K ORIGINAL 4 Cell Laptop Battery for Inspiron 14 / 15 / Vostro Series 4 Cell Laptop Battery

About this product

The Dell M5Y1K 4-Cell Li-ion Laptop Battery is engineered for consistent power performance, reliable backup, and extended lifespan. Designed as an ideal replacement for original Dell batteries, it offers optimum compatibility with a wide range of Inspiron, Vostro, and Latitude series laptops.This high-quality battery uses Grade-A lithium-ion cells from trusted manufacturers such as Samsung, LG, and Sanyo, ensuring fast charging, stable current flow, and minimal energy loss. The battery operates at 14.8V / 14.6V, offering 40Wh – 50Wh power output and up to 3 hours of backup on a full charge, depending on usage intensity.​Performance & EfficiencyBuilt with smart energy management circuitry, the M5Y1K maintains steady voltage output and optimizes overall system performance, avoiding sudden power drops or overheating. It features fast-charge support, restoring up to 70% capacity in under an hour, and delivers 1.5–2.5 hours of continuous runtime on typical workloads like browsing, productivity apps, or streaming.​The premium cell design ensures up to 1000 charge cycles, far exceeding low-quality replacements that degrade after 300–400 cycles. This makes the M5Y1K a long-term investment for users seeking durability and safety.Design & BuildThis battery features Dell’s original form factor, guaranteeing a perfect fit in laptops without wobble or alignment issues. The matte black ABS casing provides scratch resistance and effective heat insulation. Internally, each cell is individually protected by layers of heat-resistant shields, ensuring durability and safety during prolonged use.​Dimensions: 30 × 10 × 5 cm, Weight: Approx. 300g, making it lightweight and travel-friendly.Safety & ProtectionThe Dell M5Y1K battery incorporates intelligent protection circuitry against:Overcharge and overvoltageOvercurrent and short-circuitOverheating and deep dischargeCertified by CE, FCC, RoHS, UL, BIS, and UN38.3, it meets international electrical, environmental, and transport safety standards.​CompatibilityCompatible Dell Laptop Models:Inspiron 14 Series: 3451, 3458, 3459, 5458Inspiron 15 Series: 3551, 3552, 3558, 5558, 5559, 5758Vostro Series: 3458, 3558, 3568Latitude Series: 3460, 3560Compatible Part Numbers:M5Y1K, GXVJ3, HD4J0, K185W, WKRJ2, VN3N0, 991XP, 78V9D, 07G07. 100% Original Product with Dell India Warranty. Suitable battery Type : M5Y1K, 0M5Y1K, GXVJ3, HD4J0, WKRJ2, K185W. Suitable laptop models: Inspiron 3451 3452 3458 3459 3462 3467 3551 3552 3558 3559 3567 5451 5452 5455 5458 5459 5555 5558 5559 5758 5759 5755; Vostro 3458 3459 3468 3558 3559 / 40wh / 4 Cell laptop battery • Battery Type: Li-ion • Capacity: 2600 mAh • 4 Cells • Battery Life: Up to 3 hours of backup per charge (varies with usage and system settings)