Power Sources

Question 1

Highest wattage light run on battery

Answer 1

1200w HMI

Question 2

Three types of batteries

Answer 2

Nickel cadmium (Ni-Cad)
Nickel hydride (NiMH)
Lithium ion (Li-ion)

Question 3

Memory effect, and which batteries display it?

Answer 3

Voltage depression, seen in NiCad and NiMH, not Li-ion

Question 4

Typical voltages of belt and block batteries

Answer 4

12, 24, 30

Question 5

Which lights require 30 V batteries

Answer 5

HMI Pocket pars, jokerbug, cinespace

Question 6

What voltage does arri ac/dc 575/1200 ballast

Answer 6

24V DC for 575w

Or 48-60 c for 1200w

Question 7

Lithium-ion

Answer 7

More power
Less weight
Faster charging speed
No memory
Good cold-weather