Can i make those run on 4 double AA batteries? It would only power about 3 or 4
1283166
4 AA Batteries is a total of 6 Volts. These only require about 3V. So you only need two AA batteries - just wired in parallel. Google 'LEDs in Parallel' for the basics on how to do that. If you absolutely must have them wired in series, then you need 2 AA batteries for each LED. In your case 6 to 8 AAs. Or you can use a 9V battery (the square ones) which will light 3 on its own. :)
1283167
Yes, you can. However, because of the forward voltage drop of these LEDs and your supply voltage, you'll need to make a series/parallel arrangement. Each LED will need its own current limiting resistor, so you'll need to buy 3 or 4 of those, at 150 ohms, rated 1/8 or 1/4 watt. I'd draw you a diagram, but I don't know how to insert it into this reply box. You can go to ledcalc(dot)com, plug your numbers into the calculator, and the returned results will give you resistor value, wattage rating, and even a simple schematic. I used 6 Volts for the supply (1.5 Volt batteries X 4), 3.2 Voltage Drop Across LED (per the spec), 20 mA for Desired LED Current. Plug those numbers in and click "Calculate" to see the results and the schematic. You'll note that the exact calculated resistor is not a commonly available value, but the calculator provides the next highest common value, and if you use that then current drops to 18 mA, which is what is recommended by the vendor for continuous use, so it's perfect and the LEDs will live longer. Some basic info on LEDs that is useful for the novice: http://electronicsclub.info/leds.htm
2067059
12 VDC, 4.2W. I used an 8 cell AA battery pack for my use. You could use any DC power supply generating 12 VDC & able to supply .4 A or more. I tried it at 24 VDC. They run for about 30 sec. & seize up for some reason. So I would not suggest trying run them on much more than 12 VDC.
1099056
Yep, you can use AA batteries (4). Will last a few days with moderate usage. We use these on our ATV's and this feature has saved me a couple of times.
2013692
I use the Duracell 11F151 charger which will accommodate 4-AA as well as 4-AAA batteries at the same time. This charger works well for me!
1337356
This has a fair chance of running those lights, but keep in mind this is a battery with a limited supply of power. The battery is rated as "26 amp-hour" hinting it'll give you 1 amp at 12V for 26 hours, or 2 amps for 13 hours, etc, so for it to last 10 hours means you can't use over ~2.5 amps. When running things off the inverter, the overall power used is about the same but the 12V gets changed into 120V and the amps get changed from 2.5 amps to 0.25. I just tried a string of 26 LEDs (with the 1-2 inch cone on each) that shows 0.04 amp draw, so I could only put 5-6 of those together if expecting 10 hours. You may need to check yours to be sure of what yours needs since they may be different (I used the "kill-a-watt" meter to measure mine that you may want to consider getting to see exactly what yours use).
1186614
yes you can use the 8 AA batteries that you can pick up from Radio Shack is called the battery holder or if you want to plug in the wall you can just ask them for a 12 volt power supply
2267536
It uses two triple A batteries, I see no reason why rechargeable AAA batteries wouldn't work. My unit seems to 'leak' electricity in that the batteries run down even when the unit is off. I 'fixed' this by taping a bit of plastic at the entrance to the battery door which I slide over the contact on one battery when it isn't in use, the batteries now last a long time.
752586
I had 4 on it it worked until I replaced it with a mppt controler. Look at the mppt controllers you can get up to 30 percent more power from the same pannels
936794
Yes, you just won't get as long a run time as higher Ah batteries. It's just a DC motor if the battery will fit it will run.
1534387
If by 4a you mean 4 amp current draw then this 12 amp hour battery could run in for a max of 3 hours. About half that would be more realistic unless the power draw was less with lowered sound levels giving reduced amp needs. I run a ham radio transceiver with mine which pulls about 1.5 amps on listen and 10-12 on transmit. I have used it for over 2 hours of mixed use and it was still going.
687226
If you mean can you charge batteries other than the ones in the radio itself then the answer would be no. It doesn't have the capacity to produce that much power.
1853903
It only works with 2 AA batteries, however, this radio is far from power hungry. I have had the radio for several months using it on occasion for at least an hour at t time and i am still onthe first set of alkaline batteries. You could use rechargeables and I suppose you could hook up a power supply connecting to the internal spring contacts with aligator clips but Hey! this is a portable radio!Not a ton of bass but surprisingly good fidelity and great stereo separation. Even played loudly the batteries will last a long time.
935559
It will charge 2 @ AA or 2 @ AAA or one of each.....but not a single battery of either type: only 2 at a time.
1408663
Yes, you can. However, it does not work on batteries. It is powered through the USB cable or an A/C power cord sold separately. Though, someone on here said it runs on two AA batteries. I just haven't noticed a place to put batterie because that is not how I use it.
1514750
I've been using AA batteries, but there is a power input on the unit labeled DC 4.5v
857070
They work on 6 D size batteries.....would not depend on them for power too long!
1314829
I have an old model that I purchased in 2007 and it still works with 4 AA batteries. I use dollar store alkaline batteries and they work just fine. The base you can plug in or use an optional 9 volt battery in case of blackouts.