Total Micro - Notebook battery - lithium ion - 9-cell - 8700 mAh - for Latitude E5420, E5520, E6420, E6520

The battery Total Micro makes will meet the original computer maker's specifications and in many cases Total Micro's replacement battery will be higher in performance offering an increase in computing time and a longer overall life span. Inside every notebook battery is a grouping of "energy cells" containing chemical mixtures that provide an electrical current to power the notebook computer. This is the primary component of any battery and the quality and performance of these cells determines not only how long a battery will operate before needing to be recharged, but also the number of charge/discharge cycles the unit will sustain. High quality cells typically will provide several years of charge/discharge performance and several hours of computing time per full charge. Total Micro only uses premium quality energy cells, ensuring high level of computing time and overall battery lifespan.