Review on Dell Laptop Battery E6420, E5430, E6520 & More - Long-Lasting Power For Inspiron & Vostro Models by Luis Green

Never had close to the capacity that it should have from the very first day, and that fell off quickly over a few weeks until its as flat as the battery I bought it to replace. At this price point this was to be expected, and if it's just a bit of a stopgap for rarely having your laptop off a charger it should be alright. However if you plan to use it like a stock Dell battery you will be sorely disappointed.