Battery powered lights are now the norm. Even if you eventually plug things into a wall, the ability to walk a light in and set it up in a matter of seconds, without messing about with sockets and cables, is a massive time saver. Read the small printIf you are familiar with the way that watts, amps and volts are related, the technical realities of all this will be no surprise.
An Anton Bauer Titon 150 has a capacity of (about) 150 watt-hours and can sustain a maximum load of ten amps. The total amount of energy used over a given period of time is the same in either case; it just delivered differently. A given load (our lightbulb) uses a given amount of water (electricity) over a given period of time. In this analogy, water pressure is the voltage, in volts, and the width of the pipe….