CYLAPEX 6 Pack Red Fairy Lights String Battery Operated Fairy Lights Firefly Lights LED Starry String Lights 3.3ft 20 LEDs Silvery Copper Wire for Christmas DIY Decoration Costume Wedding Party

Work well and good color.

I am not an electrical engineer but I have been trained in troubleshooting basic electronics back in my high school days (thanks Francis Tuttle Vo-Tech in Okc!).These LEDs are diodes which emits light when power applied. LEDs requires a resistor to control the current that runs through them since diodes have almost exactly zero resistance! These lights are basically causing a short-circuit drawing a huge amount of current to these CR2032 batteries maximum ability.If I connect my adjustable power supply and slowly increase the voltage, at 2v its already drawing 3amps which is way more than these little LED lights can handle of any length of time!These little CR2032 batteries hold approximately 245mAh and can draw about 2.5 milli-amps when shorted thru my volt meter and then drops to around 1.5 milli-amps after about a minute which explains why these lights look great when you first turn them on with new batteries but after about a minute, they get dim and after about 11 hours, they reduce in brightness by about 50%.The engineer who put this together should add two more batteries making it 4 batteries in series and also add about a 1 watt 200ohm resistor in series to help control the current allowing for the batteries to have a much longer lifespan while not losing much brightness.Attached photo is my temporary fix until I receive some parts on Amazon to make this a permanent fix. I'm usually two 3.7v 1500mAh batteries put in series making a 7.4v power source with 4x51ohm resistors for each LED line. Yes, I have twisted together two strip of these LED lights so that each LED isn't so far apart. I also used the switch/battery holder that came with these lights and modified it to be used as a switch on/off only until I get my permanent parts in the mail making this setup look more "professionally done".

the product itself is fine-very nice looking, in fact, and seemingly well made for what it is. The hinge that holds the battery pack closed is an awful design-its almost impossible to open (I had to grab some tweezers), and its designed so that it will definitely bust after one or two openings.

They are so pretty but they don’t stay bright very long even tho I changed the batteries many times. I liked the ease of putting these on whichever way I wanted but we had to change the batteries a lot. I still used them all thru Christmas

My jar has 2 light strings in it. Perfect as Valentine's decoration.

The lights are quite bright when you first turn them on, but the batteries don’t last more than a few hours. I put these lights on a wreath I made for Halloween and as back light for a Halloween scene. Less than 12 hours later and the batteries died. I also bough the green lights and the batteries in those are lasting much longer. It’s really disappointing the red ones didn’t last as long.

Red lights are great for working in the dark and not hampering our natural night vision. I placed a strand in each of six clear plastic creamer bottles that had been saved to make lanterns. These work great for placing around our observing field at the observatory to provide a glow of red light. Now visitors who don't know the property can get around more safely and not have their eyes that have adjusted to the dark blinded.

muy bien el producto

Very satisfied with the product. Love how compact it is. Using it around my Christmas decorations. Would recommend this product.