You have a 12 V supply and each LED might need up to 3.5 V. (12 V)/(3.5 V) = 3.4 LEDs max.
2.3 million lights can be run off a 12 volt battery. The battery will be large, the lights will be small.
The most common LED strip and battery voltage combination is 12V DC. Unless you have a specific situation that requires something else, 12V should work just fine.
A 100 ah, 12v battery should give you 1200 watt hours run time, or a little more that 36 hours of run time while running the mere 33 watt light string.
How many LEDs can a battery power? To ensure full current over a reasonable range of battery voltages – 9.5 V down to 8 V – you can only have two LEDs in series on a 9 V supply. These will drop about 3.4 V each and 6.8 V in total. A series resistor will drop the remaining 2.2 V to make up the 9 V battery voltage.
Quite intuitively, providing more than 12V DC on a 12V LED strip is not a good idea, because you may cause the LED strip to be over-driven, burning out the diodes or causing excessive heat buildup that can damage both the circuit and on-board components.
In other words, you can use a 12V power supply to power a 4-ft section of 12V LED strip lights with another 3-ft section of 12V LED strip lights daisy-chained.
If the stated battery capacity is 2100 mAh, we could expect to run that one pixel for about 35 hours continuously before the battery peters out (2100 mAh ÷ 60 mA = 35 hours).
Well, you have nothing to worry about. LED headlights barely use much power while running. In fact, most draw an average of 20 Watts per headlight bulb. With this power draw, even IF you leave your LED headlights on the whole night, they will not drain your battery as halogen headlights would have.
Microdrop LED lights constructed on thin uncoated wire should last over 100 hours with a fresh set of 3 AA batteries or 2 round C-style batteries and standard LED battery light sets with thicker insulation and LED lenses should last about 18-24 hours on a set of 3 AA batteries.
Series vs Parallel
The 12V is comprised of 3 LEDs in series at 3 volts each, and a current limiting resistor that also corresponds to 3 volts or so, for a total of 12V. Each subsequent group of 3 LEDs, even though they are linearly laid out, are actually connected to each other in parallel.
If you have an LED strip with 12-volt DC operation that you wish to use in a 120-volt AC home wiring system, you'll need a power supply that includes 120 volts in its input range and has 12-volt DC output.
LED lights require a certain voltage, such as 24 or 12V. When they run at higher voltages, they become extremely hot. Extreme heat damages the LED lights or the soldering around them. Due to the heat damage LED lights start to dim, flicker, or may die entirely.
Vetco recommends, as a general rule, not to connect more than three complete strips end-to-end without adding in extra, higher gauge power wire or additional power supply units down the line.
Multiply your room square footage by the footcandle requirement. For example, a 100-square foot living room, which needs 20 foot candles, will need 2,000 lumens. A 100-square foot dining room, which needs 40 foot-candles, will need 4,000 lumens.
Is one better than the other… Series, Parallel, or Series/Parallel? The requirements of a lighting application often dictate what type of circuit can be used, but if given the choice, the most efficient way to run high power LEDs is using a series circuit with a constant current LED driver.
An LED is fairly bright with a current of 20mA. Three 3V LEDs need a power of 3 x 3V x 20mA= 0.18W but the voltage boosting circuit needs about 0.1W so the total is 0.28W. An AAA alkaline cell will power them for 1W/0.28W= 3.6 hours.
Light Emitting Diodes, or LEDs for short, are the most efficient bulbs you can use for home illumination. Like incandescent bulbs, they are generally unaffected by the number of times you turn them on or off.
The 23A is not powerful enough to power the strip for any length of time. 8 AA batteries would power it for about 6 hours.
One 3V Coin Cell Battery can run up to 6 Sewable PCB LEDs or up to 6 leaded LEDs (listed in the link above).
Well, a lot of cars will cut off power to the power ports (what we used to call “cigarette lighters”) when you turn the car off. So it's not an issue for most people.
One advantage of LED strips is that they can be easily connected to a single power source. This allows for a neater and more efficient installation, as well as easier troubleshooting in the event of an issue. In addition, connecting multiple LED strips to one power source can help to reduce energy costs.
You can typically connect 8 to 10 times more LED light strings together end to end while only using one plug outlet. Most traditional Christmas mini lights allow you to connect only 4 or 5 sets end to end, but with many LED mini light strings you can connect 40 to 50+ together depending on the light count.