BTExpert Laptop Battery for Dell INSPIRON 15 3000 15-3521 15-3537 15-3541 15-3542 15-5521 15-N3521 15-N5521 15R-1528R 5200mah 6 cell Color: Black|Dimensions mm:271.78x50.8x20.32 mm|Type: Lithium Ion|Capacity: 5200 mAh Voltage 11.1v|N.W.g: 339|Unit Cell: 6|This Replacement li-ion battery is guaranteed to meet or exceed original specifications. Quality: Durable and Utilizes high quality grade "A" cells for higher performance and more reliability. Fast charging. Low power consumption. Built-in protection circuit ensures both safety and stability. Buy with confidence!: The most cost effective and long lasting product available on the market today. Peace of Mind - 30 day worry free/no question ask return policy. Fast Shipping Peace of Mind!: Freshly produced and environmentally friendly and certified merchandise. We don't keep these on shelf because of our high-volume sales. We are able to sell good quality products at low prices because we buy direct from Manufacturers & Distributors in bulk quantity. BTexpert is a registered trademark protected by the US Trademark Law and is marketed exclusively by BTEXPERT. Any attempt to copy, relist or resell of BTexpert products without permission is prohibited; we reserve the right to take action against violators.