V7's high-quality replacement notebook batteries are made from the highest-quality cells available and incorporate all of the standard logic boards, thermal protectors, thermistors, and circuit breakers to ensure maximum levels of safety, reliability and efficiency. V7's wide selection is compatible with top-line products from all major manufacturers and meets or exceeds original OEM specifications to provide longer-lasting quality.- Built with high quality components thats fit select DELL laptops- Volts: 14.4V, Cells: 4 Cell, Chemistry: Li-ion, Capacity: 2600mAh- 1 year manufacturer's warranty made with high quality cells- DELL Inspiron 15R-5521 XRDW2, DELL Inspiron 14 (3421) , Inspiron 14R (5421),Inspiron 14R (5437),Inspiron 15 (3521),Inspiron 15R (5521), Inspiron 15R (5537),Inspiron 17 (3721),Inspiron 17 (3737),Inspiron 17R (5721)- T1G4M 4WY7C FW1MN PVJ7J 6KP1N BATT XRDW2 ,T1G4M ,4WY7C ,FW1MN ,PVJ7J ,6KP1N ,G35K4 ,V8VNT ,DJ9W6, 24DRM ,X29KD ,N121Y