shdes 0 Posted May 29, 2015 Hi, What kind of smallest 12 volts battery is there available to power a wireless mini ip cam that can be hidden anywhere? Do I have to get normal 9 volts battery plus 3 AA 1.5 volts battery and series them to form 12 volts? Lead rechargeable batteries would be too big. Is there commercially available rechargeable 12 volts battery? Share this post Link to post Share on other sites
Securame 0 Posted May 29, 2015 Ask yourself first what working time do I want for that mini IP cam? The smallest battery is no battery at all, which will give you 0 minutes working time . From that on, you would need to know what is the minimum working time you expect, and given the mA that your camera uses (which you will have to check) see what is the minimum battery you can use. Share this post Link to post Share on other sites
MaxIcon 0 Posted May 29, 2015 Running different battery types in series can be tricky, as the current will be limited by the battery with the highest internal resistance, but it's easy enough to test. You won't get a lot of current out of a setup like that. That said, most 9V batteries contain 6 1.5V AAAA batteries, so you can probably do it with no problem. http://www.instructables.com/id/how-to-open-a-9v-battery/ A 9V battery typically can supply around 500mA, for 4.5W, which is enough to run many cams. It will only last an hour or less, depending on exactly what brand and type you buy. You'd be better off with a set of 6 AA batteries in a holder - more current, more run time, not much bigger. A good quality set of AAs will run the same 500 mA (6W) for more like 2-3 hours, depending on how low the voltage can get and still operate the cam. Here's the smallest 12V battery I know of - the A23. Not much current capability, and probably not enough to run your cam for long, if at all: http://www.amazon.com/Energizer-A23-Battery-12-Volt/dp/B00004YK10/ref=sr_1_1?ie=UTF8&qid=1432929615&sr=8-1 I don't think they're available rechargeable, but who knows these days? If you want anything more than couple of hours, you'll need a motorcycle style lead acid battery. Share this post Link to post Share on other sites
ak357 0 Posted May 29, 2015 Running different battery types in series can be tricky, as the current will be limited by the battery with the highest internal resistance, but it's easy enough to test. You won't get a lot of current out of a setup like that. That said, most 9V batteries contain 6 1.5V AAAA batteries, so you can probably do it with no problem. http://www.instructables.com/id/how-to-open-a-9v-battery/ A 9V battery typically can supply around 500mA, for 4.5W, which is enough to run many cams. It will only last an hour or less, depending on exactly what brand and type you buy. You'd be better off with a set of 6 AA batteries in a holder - more current, more run time, not much bigger. A good quality set of AAs will run the same 500 mA (6W) for more like 2-3 hours. . 12 Volt battery from cordless Drill may be Share this post Link to post Share on other sites
MaxIcon 0 Posted May 29, 2015 Good point - that's probably the best bet for good power capacity and easy charging, though starting to get bigger. 14.4V is more common than 12V for power tools, and I bet most cams would run fine on it. There's some risk you'd burn it up, but may be worth a try... Share this post Link to post Share on other sites
shdes 0 Posted June 1, 2015 Running different battery types in series can be tricky, as the current will be limited by the battery with the highest internal resistance, but it's easy enough to test. You won't get a lot of current out of a setup like that. That said, most 9V batteries contain 6 1.5V AAAA batteries, so you can probably do it with no problem. http://www.instructables.com/id/how-to-open-a-9v-battery/ A 9V battery typically can supply around 500mA, for 4.5W, which is enough to run many cams. It will only last an hour or less, depending on exactly what brand and type you buy. You'd be better off with a set of 6 AA batteries in a holder - more current, more run time, not much bigger. A good quality set of AAs will run the same 500 mA (6W) for more like 2-3 hours, depending on how low the voltage can get and still operate the cam. Here's the smallest 12V battery I know of - the A23. Not much current capability, and probably not enough to run your cam for long, if at all: http://www.amazon.com/Energizer-A23-Battery-12-Volt/dp/B00004YK10/ref=sr_1_1?ie=UTF8&qid=1432929615&sr=8-1 I don't think they're available rechargeable, but who knows these days? If you want anything more than couple of hours, you'll need a motorcycle style lead acid battery. For a typical ip bullet camera standard size (say 5 watts consumption).. how many hours can a motorcycle style lead acid researchable battery last and how is this computed? Thanks. Share this post Link to post Share on other sites
ak357 0 Posted June 1, 2015 how many hours can a motorcycle style lead acid researchable battery last and how is this computed? Thanks. http://lmgtfy.com/?q=how+many+hours+can+a+motorcycle+style+lead+acid+researchable+battery+last+and+how+is+this+computed Share this post Link to post Share on other sites
shdes 0 Posted June 1, 2015 how many hours can a motorcycle style lead acid researchable battery last and how is this computed? Thanks. http://lmgtfy.com/?q=how+many+hours+can+a+motorcycle+style+lead+acid+researchable+battery+last+and+how+is+this+computed I mean how to compute a bullet camera power usage if powered by such researchable lead battery. For instance, the bullet camera is 5 watts.. does it consume 5 watts for one sec, one minute or one hour? Anyone? Share this post Link to post Share on other sites
51cent 8 Posted June 1, 2015 Usually the listed watts are one hour. For one day 5 x 24 = 120 Share this post Link to post Share on other sites
msecure 0 Posted June 2, 2015 Hi, What kind of smallest 12 volts battery is there available to power a wireless mini ip cam that can be hidden anywhere? Do I have to get normal 9 volts battery plus 3 AA 1.5 volts battery and series them to form 12 volts? Lead rechargeable batteries would be too big. Is there commercially available rechargeable 12 volts battery? Been using this for a few years, if you get the higher capacity will last 24hours if your IPC does not use much power. Share this post Link to post Share on other sites
jeromephone 6 Posted June 2, 2015 could you hide a trail cam ? They have a lot of options and are set up for operation over a longer period of time. Share this post Link to post Share on other sites
MaxIcon 0 Posted June 3, 2015 I mean how to compute a bullet camera power usage if powered by such researchable lead battery. For instance, the bullet camera is 5 watts.. does it consume 5 watts for one sec, one minute or one hour? Anyone? If a camera uses 5W, it does that as long as it's on, so 1 hour of operation would be 5W-hr. Battery capacity is rated in amp-hours. 5W at 12V uses 0.4A (5/12=0.42). A battery rated at 7Ah will supply 0.4A for 17.5 hours (7/0.4 = 17.5). It's a little more complicated than that in real life, as the voltage drops steadily during that time, so you'd need to test it to be sure, but that's the ballpark answer. Share this post Link to post Share on other sites
steve6690 0 Posted June 3, 2015 A 5 watt device will draw 5 watts when it is working. All the time. The first thing you need to do is work out how long you need the battery to power it for. Share this post Link to post Share on other sites