The Price to Earnings (P/E) ratio, a key valuation measure, is calculated by dividing the stock's most recent closing price by the sum of the diluted earnings per share from continuing operations ...

If it's hot to the touch, it is overheating. Visually look the battery over. Check to see if there is any obvious bulging, such as is the case with this battery from an Inseego 8800L hotspot. Also ...