Lenovos ThinkPad notebooks and tablets, including ThinkPad L450, incorporate a sealed battery specifically designed for ultra-thin products. With a noncustomer replaceable battery, replacement involves depot servicing by a trained technician. Protect your investment by extending the 1-year base battery warranty to a 3-year total duration Sealed Battery Warranty. A low upfront cost provides significant savings relative to a non-covered battery replacement, and saves the hassle and frustration of dealing with unplanned IT expenses.