Product Type: Li-Polymer, Volts: 7.57V, Capacity: 3070mAh/ 23.2W h ^^ Compatible model Compatible with Microsoft Surface Book 2 15" 1793 Enhanced version Tab with Toolkit. Model No. DYNH01. Make sure your phone is suitable for this replacement battery before ordering it. ^^ Great A + Battery Cells 100% new, high quality, updated battery, uses class A + battery cells with UL, CE and ROHS certification. Each battery has a battery tested under stringent quality control standards and offers you a charge of up to 500+ cycles with the fast and efficient charge. ^^ Maximize PowerThis Updated Replacement Battery, Easy Installation, The Same Size As Your Original Battery. No Instructions, There're Lots of Instruction Videos on YouTube, You Can Check Them Out. ^^ Customer Guarantee We take care of all quality-related problems with a replacement or a complete refund. If you are not 100% satisfied with your battery change when using this battery during the period, we will reply to you within 24 hours.