How much current does the anti-dew heater draw?
The 1.52″, 1.83″, and 2.14″ holders draw 0.08 amps of current (1.1 Watts of power) when operated at full voltage (~13 volts). The 2.60″ and 3.10″ holders draw 0.16 amps of current (2.2 Watts), and the 3.50″ and 4.00″ holders draw 0.24 amps (3.3 Watts). Operating the heater at lower voltages reduces this power consumption. When used at full power (12 V), the heater will clear dew that has already formed within 10-20 minutes. However, it is best to use the heater in a preventative mode at a reduced voltage. In most cases, even 3 or 4 Volts is sufficient to keep dew from forming.
