?Precise Compatibility? Replacement battery for Dell Latitude 5320 / 7320 / 7420 / 7520 business laptop, perfectly matching the original battery size and interface. But NOT compatible with Dell Latitude 7320 Detachable Laptop, please be noted. ?Lightweight and long battery life? 63Wh high-density lithium-ion battery provides 5-7 hours of office life (actual use time varies by configuration). ?Ensured Safety Protection? Built-in intelligent control chip, CE / FCC / RoHS certified, support overcharge / overdischarge / short circuit protection. ?Purchase Tips? Before purchasing, please open the back cover of the laptop to confirm the battery model. Press [CTRL + F] to search for your laptop model / part number. Compatible laptop models and part numbers of compatible batteries and laptops are listed as following in product details. ?After-Sales Guarantee? SBL Provides 12 months long warranty, 7 x 24 hour customer service support, 30 days no reason to return or exchange. Professional Battery Solutions for Dell Latitude Business Laptops Passed 150 rigorous tests, including 1,000 plug tests and a 1.5-meter drop test, to meet the needs of business people on the move. Technical Specifications: Battery Type: Li-ion 4-Cell Capacity: 63Wh, 3200mAh Cycle life: ?500 times (maintain 80% capacity) Compatible / Orginal Laptop Models: Dell Latitude 13 5320 7320 Series; Dell Latitude 14 7420 7520 Series; Dell Latitude 7320 2-in-1 Series; Dell Latitude 7420 2-in-1 Series; Dell Latitude 5320 2-in-1 Series; Dell P134G001 P135G001 P138G001 NOTE: Note: Not compatible with Dell Latitude 7320 Detachable Laptop Battery Part Numbers Compatible: 0TN2GY / TN2GY / 9JM71 / 4M1JN / 1PP63 / HDGJ8 / MHR4G / 727CG / 0727CG / CN-0TN2GY / CN-0727CG Recommendations for Use: For first use, you must activate the battery first, 3 steps: 1. Install the battery into the laptop. 2. Connect the laptop to the adapter and turn on the power. 3. Start the boot. After that, the battery can be used normally. Works best with Dell original 65W charger. CAUTION: Do not expose the battery to temperatures above 65? (149F). See the manual for safety instructions.