Geelyda 12PCS CR2032 Battery Holder with Switch Plastic 2x3V Button Coin Cell CR2032 Battery Holder Case Box with Wire Lead ON-Off Switch (Black)

We used these to teach simple circuits to a group of young boys as we made Harry Potter Magic Wands with them. They worked perfectly! Not that the wires are less then 10 inches, and each holder takes 2 batteries (a detail that the description clearly states, but I missed. I had to do a last minute run to the store as I only opened the holder about 1 hour before our activity. Big Oops! But the activity was a huge success!)

Priced right. But I wish I could get get parallel CR2032 boxes for double capacity / life @ 3volts for powering LED's. I am afraid to oversupply 6 volts to a single LED, so that conversion from incandescent to LED for a magnifying glass was completed using the original alkaline AA batteries, for now. Works fine with the LED, but I am damn tired of leaking alkaline batteries when a device sits in a drawer too long. Fed up with cleaning up after them, like a puppy you forgot to let out after feeding him / her ... But overall, I have an illness - the need to modify everything I own sooner than later, although with this cheap RadioShack magnifier I resisted modifying it for over 20 years. And only now due to RS not being around any longer. The blame is on Len Robert's who drove RS into the ground! I miss RadioShack and mourn its passing. I was a customer (and worked PT for like 5 years after I retired, the first time) since the late 1960's. In the late 1990's we had 5 RS stores in the 30,000 persons community were I live; I worked in 3 of those particular stores. Hated the job itself, but liked dealing with many of the customers.

Although these work well, and as intended, I didn’t realize they didn’t come with the screws needed to keep them tightly closed. However, they do seem to stay closed on their own if left still. I’ve almost used all of them, will reorder again.

These are impressive (particularly given their size and cost) little power sources -- for anything that needs just a bit of 6V power. For me, each is just powering a blinking red LED (not a very demanding application) as a way to warn people away from various things in the dark. Stick a bit of velcro on the back of the case, and you can put a "blinky light" wherever it's needed.I've just got one minor complaint (that keeps me from giving this 5 stars) -- these are apparently made in a hurry, so about 1/4 of them had weird bits of plastic flashing still on the box. Maybe I'm expecting too much from a cheap battery box, but I would have preferred to not have to spend time with a razor blade cleaning up the things so they look presentable.

Matched these up with some pre-wired 6 volt ultra-bright LEDs to make a bunch of inexpensive spot lights for Halloween...worked great! The standard color coding of the wires eliminated any brain work when soldering them up...nice.

Wish list: remote control on off would be awesome! single battery smaller units would also be awesome!These are nice components when building your own light diodes, switch works well, wires are firmly attached, haven't had any of them defective.

use them for building lights for hobby. they work well for this. and relearning how to solder . been a long time.at 61 i don,t think it will be a new livelihood. lol

I've used 2 on rc cars so far and easy to install.