| Author | Message | ||
     Torquehd |
I know there are some electronically savvy guys here on the forum, I have a question regarding amperage pertaining to batteries. I bought a Samsung wireless baby video monitor, the intention being that I would place the camera anywhere I wanted to watch, and monitor it with the remote monitor/controller. Neat idea, but I didn't realize that the camera doesn't have an internal battery. It requires 6VDC via a barrel connection, and comes with a 110VAC power supply (that supplies 6VDC to the camera). What I'd like to do is build a battery pack that I can plug into the barrel connection, giving me a truly wireless camera. I want to connect AA or AAA batteries in series to achieve that 6VDC, but I don't know about amperage in batteries. Do i need to worry about supplying too much current, or will the camera only pull as much current as it needs (like a household AC circuit)? If so, could I run batteries in series for 6VDC, and in parallel in order to increase the battery pack's life? Thanks guys. | ||
| Sleez |
the appliance will draw the current it needs, your plan should work fine. as long as you have the DC voltage level close, and you can build a pack as large as space and money permits. your plan so far seems sound | ||
| Chauly |
Look at the post cube labeling and see what the current rating is. It's probably 500 mA@6vdc.(I can't imagine the camera drawing all of that, since the cube would overheat.) Your typical battery will be 1.5V,so hook them up in a row of 4, plus to minus, to add up to 6 volts, then hook the quad packs in parallel, plus to plus/minus to minus to build capacity. Or you could go to batteries plus and shop for a 6v sealed battery of whatever size you want... | ||
| Hootowl |
"Or you could go to batteries plus and shop for a 6v sealed battery of whatever size you want" That's what I would do. Going to be cheaper in the long run, and probably a whole lot more compact. Rechargeable too. | ||
| Two_seasons |
Lantern battery that is 6vdc. You'll get long life out of one. | ||
| Reepicheep |
What others have said, just get the voltage close. You could even go with a higher voltage and add a simple regulator to step it down precisely, you will waste a little power doing so, but not a lot. Look on eBay for a big lithium battery pack that comes with a recharger, for an obsolete but popular piece of consumer equipment like an old digital camera or something. You can probably get a decent lithium battery cartridge that will snap into a charger for $15 or something. Maybe get a second charger to cannibilize for conntectors if it looks like connectors will be hard to make. I did that and put it on a shelf for some future project I haven't built yet... | ||
| Torquehd |
awesome. thanks guys. wish I wasn't deployed so I could run down to radio shack; I put 4 AAA's in series and came up with <6.5 volts. The manual says 6VDC +/-10% so I'm betting that will suffice. I'm looking through our commo and vehicle stuff trying to find a right-sized barrel connector that I can sacrifice. Thanks for the help all. |
