Kilowatt hours, or Kw h, is a measurement of energy. When referring to solar batteries, energy measures how much fuel is contained in something, or used over a certain amount of time. Kw h is used to describe how much energy can be stored in the solar battery. This measurement tells how big the battery is, but not how much electricity a battery can provide.
Kilowatts (kW) is a different measure that tells how much electricity the battery can deliver. So, it is important to know the difference. For example, a battery that measures high in kilowatt hours, but low in kilowatts, would deliver a small amount of electricity for a long time. Solar batteries range anywhere from 2.5 – 16 Kw h, so it’s important to know your storage needs.