MILAPEAK (Real 18AWG 43x2pcs Strands) 10 Pairs DC Power Pigtail Cable 12V 5A Male & Female + 10 Pairs DC Power Jack Plug Adapter Barrel Connector for CCTV Home Security Surveillance (2.1mm x 5.5mm)

Found these at a good price and needed some decent quality DC 5.5x2.1 connectors for the things I work on (Lithium Ion, Lipo, LiFeP04 batteries, COB LED’s, Power Supplies, Fans, Power Banks, etc) and at first I was satisfied with the set. The adapters are handy but the terminal block is just of average quality. Only had one that didn’t work. I rarely used the male and female DC connectors but after a year I’ve begun to notice a pattern. Now that I’ve used half of them it seems like 50% of the male DC barrel plugs don’t have a connection to the ground. More than once I’ve added one to a project and when I’ve tested it I get nothing from that connector. I check continuity and the positive side instantly beeps but the negative side shows OL or sometimes some extremely high Ohm readings sporadically. I was about to hand off a 70W COB LED panel with an A123 12V 20Ah battery to my mom for a camping trip when I realised I hadn’t tested that part of the circuit (it’s wired straight to the battery as an auxiliary input/output since my parents don’t even know what an XT60 is. In a pinch they could halfway charge the pack up with a 12V power supply or use the battery to power a 12V device with a barrel jack.) Sure enough another failure. I cut this one open to test the components and the connection between the black wire and the back of the jack look fine but have no continuity. This would be the 4th one I’ve encountered and I’ve used 8-9 at this point. Chop em off and waste some quality 3:1 heat shrink I had used along with the time I spent soldering this to the silicone cable coming off the battery. Now I know to test these before putting them on and I’ll also be testing all of the unused ones I have as they are right now since I should be able to find the failures. QC fail. I’ll look past a piece or two in a kit like this but one of the components has a 50% failure rate and that’s unacceptable. Classic You Get What You Pay For. Guess I’ll buy something more expensive from a name brand manufacturer off Digi Key for the rare occasion I need to use these to accommodate the boomer generation.

I ordered these to connect an Arduino to my custom made gaming seat motors for vibration feedback when playing racing sim. Each motor was wired to a female and the power control from the Arduino was wired to a male. This way I could just connect and disconnect easily. I used the power pig tail to connect the Arduino DC input to the external DC power supply. Everything worked perfectly and expected. Highly recommended.

Ok

If you need 5.5 x 2.1 DC connectors, look no further - This is the best deal to be had. High quality components, cant go wrong here. Making some customizable shop lights and these fit the bill perfectly! Highly recommend & will purchase again.

No dislikes. They work.

Look well made, works well for my project.

Be sure to test these before using them. I had one of the female pigtails that was internally shorted. Wouldn’t have been a big issue except that I was connecting it to Li-Ion batteries. Not a good plan. Other than the occasional explosion hazard as noted above, these are a great option for connectorizing all kinds of things.

With both the screw terminals and pigtails it is very easy to set things up. I had a minor problem which was quickly resolved. I like it a lot.

I use these power connectors all the time for my control boxes and props in our Halloween and Christmas displays. They are perfect for the low voltage side and never fail.

EXCELLENT QUALITY ! Very reasonable. These are much Much better than any other similar connectors that I have purchased thru Amazon before . Very heavy duty pretinned ends and a set of 20- 10 matched Male & Female pairs. Getting them same day was an extra bonus! I have already ordered another set for spare stock. You wont be disappointed with these if you need to repair or make up a cable.