arabidopsis

The battery is fairly new and is freshly charged. I have a second one that I'll try tomorrow to see if it's a battery issue. Hopefully the stupid thing isn't broken.

I am building a remote CCTV camera system that will record to a portable DVR. The ultimate purpose is that I am going to send it 100 meters underwater in an aluminum case to watch fish behaviour. But that isn't important right now. What is important is that my camera isn't running off the battery for some reason. The camera is the Clover Electronics OB280... just a basic IR camera with a decent picture. It's power requirements are 12 VDC, 250 mA at peak usage. I have a 12 volt Sealed Lead Acid battery. This CCTV camera comes with an AC wall adapter, and everything works just fine when I use that. It uses a barrel plug connector. So I bought an identical connector, soldered the appropriate wires to my SLA battery, and figured everything should be fine. However, it doesn't work when I plug the camera to the battery. I checked the voltage with my multimeter, from the battery it's 12.5 V, from the AC adapter it comes out at 11.9 V, so it should be within the correct range. My polarity is not backwards, as in both cases the center of the plug is positive and the outside is negative. Does anyone have any ideas as to what could be wrong here (or how to go about finding out?)