My brother-in-law is buying an underwater camera for use with his marine biology studies.
Here are the electrical specs for the camera. Input voltage 12 VDC Power Consumption: 1.4 W Cable: 30, 50, 100m (basically a really long cable with an RCA connection) 21 LED lights Image Sensor: Color CCD
He's trying to understand the options that he has available for the Battery Kit. He can choose from:
- 4.5 A Battery + charger
- 7 A Battery + charger
Why would he get one over the other? Is it actually paired up with the length of cable that is connected to the camera?
Doing some quick Math: P = VI => I = P/V I = 1.4 W / 12 V = .12 A.
So the camera doesn't really require that much amperage. So why would he choose the 7A Battery over the 4.5 A Battery b/c that seems more than adequate.