Niels Lindelien Posted October 1, 2009 Report Share Posted October 1, 2009 Hello all, I apologize for the newb questions. I have done as much research as I think is possible and I still am dumbfounded by some aspects of batteries. Maybe I am somehow missing something. The only batteries I can find available for sale are around 14 or 15v. Am I correct to assume that these are "12v", but are initially a higher voltage so that as they discharge through 1 cycle they maintain at least 12v? In a 12/24v switchable sled, is the 24v created by placing two 12v batteries in series, thus requiring me to place two batteries on the sled when operating a 24v camera? Also, since the 12v batteries are actually as much as 14.8v, won't an initial potential of nearly 30v negatively affect the camera in some way? Am I correct in thinking (for example) that a battery rated at 14v and 140Wh would theoretically power a camera drawing 10 amps for 1 hour, or a camera drawing 2 amps for 5 hours? How does framerate affect the power consumption of the camera? Any help on all or just one of these questions, or even a point in the right direction for more research would be most appreciated. Thank you all. Quote Link to comment Share on other sites More sharing options...
Premium Members Jerry Holway Posted October 1, 2009 Premium Members Report Share Posted October 1, 2009 Niels - lots of questions. Go to Anton Bauer's website and read about batteries - it's a good place to start. Li-ions are 14.8V, and yes, it's good to have excess voltage from the nominal rating. 2x Li-ions hot off the charger in series are actually around 32 volts, which is okay for a 24 volt camera, IF the camera's internal regulator can handle it. Generally the higher the voltage, the more efficient the regulator. Most modern 24 v cameras are okay with 2x Li-Ion batts in series; their internal regulators (which are set to 22 volts or so in order to run off a nominal 24 volts), are fine with the overvoltage. 140 watt hours should mean that a 14 V battery can take a one amp drain for 10 hours. It tends to get much less efficient the higher the amp draw. Hello all, I apologize for the newb questions. I have done as much research as I think is possible and I still am dumbfounded by some aspects of batteries. Maybe I am somehow missing something. The only batteries I can find available for sale are around 14 or 15v. Am I correct to assume that these are "12v", but are initially a higher voltage so that as they discharge through 1 cycle they maintain at least 12v? In a 12/24v switchable sled, is the 24v created by placing two 12v batteries in series, thus requiring me to place two batteries on the sled when operating a 24v camera? Also, since the 12v batteries are actually as much as 14.8v, won't an initial potential of nearly 30v negatively affect the camera in some way? Am I correct in thinking (for example) that a battery rated at 14v and 140Wh would theoretically power a camera drawing 10 amps for 1 hour, or a camera drawing 2 amps for 5 hours? How does framerate affect the power consumption of the camera? Any help on all or just one of these questions, or even a point in the right direction for more research would be most appreciated. Thank you all. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.