De-mystifying voltage and amp hours
Nowadays, the cordless market offers a wide range of tools from screw drivers, saws, grinders, combi hammers, vacuum cleaners and much more. To match the varying demands of different tools, they are offered on a variety of battery platforms which is defined by the voltage, for example 12V, 22V orand 36V, and the amp-hour (Ah) hour capacity, for example, 2.6Ah, 5.2Ah orand 8.0Ah.
But what do all these numbers mean and how can you tell what’s the power capacity of a battery actually is?
Power capacity is how much energy is stored in the battery. This power is often expressed in Watt-hours (Wh). A Watt-hour is the voltage (V) that the battery provides multiplied by how much current (Ah) the battery can provide for some amount of time (generally in hours).