This small, lightweight device is designed for photographers with the plan to provide a constant power supply to a DSLR or mirrorless camera.
It also can power up a dew heater by varying the duty cycle of the DC voltage (PWM control). It is definitely a perfect buddy for your DSLR in the mountains and in any astro-photographic field.
With this dummy battery and the built-in Dew Heater Output, nothing can stop your camera from working for the whole night long! A unique product for time-lapses and astrophotography (deep sky, star trails, etc).