Revive Your Surface Pro 3: MS011301 High-Capacity Replacement Battery Is your Microsoft Surface Pro 3 (model 1631/1577-9700) struggling with short battery life, sudden shutdowns, or failing to hold a charge through work or study? This 100% brand-new Li-ion battery is engineered to match the original specifications, delivering reliable, all-day power for your 12-inch 2-in-1 tablet. With a sleek black design and strict quality testing, its the perfect solution to restore your Surface Pro 3s peak performance.