High-Quality Replacement Brand-new lithium-polymer battery designed for Lenovo IdeaPad Yoga 11 & 11S Ultrabooks (Model: L11M4P13 / 4ICP4/56/120). Premium Performance 14.8V, 2840mAh, 42Wh capacity ensures long-lasting power for work, study, or travel. 100% Safety Certified Compliant with CE/FCC/RoHS standards for reliable & risk-free use. Perfect Fit Direct OEM replacement, ensuring seamless compatibility with no installation hassles. Durable & Lightweight Slim black design enhances portability without compromising battery life.