https://www.laptopmag.com/reviews/laptops/lenovo-thinkpad-edge-e420s
Lenovo ThinkPad Edge E420s Notebook Battery Life and Software | Laptop Mag
May 25, 2011 - Lenovo's ThinkPad Edge E420s notebook is targeted towards small business users who are looking for a light laptop with plenty of style.
thinkpad edge e420snotebook batterylenovo