Explain battery ratings and how battery ratings are used?
Some of the common battery ratings are:
Amp-Hour battery rating: This is a common battery rating of batteries. Amp-hour rating of battery capacity is calculated by multiplying the current (in amperes) by time (in hours) the current is drawn. Amp-hour battery rating is commonly used on sealed lead acid batteries used in UPS systems, emergency lights and camcorders.
For example: A battery which delivers 2 amperes for 20 hours would have a 40 amp-hour battery rating (2 * 20 = 40).