Thankx FYI Things Not mentioned, that I've learned from some experiences: 1. If you don't have a caliper. Drill bits can be used to measure the plug size your trying to determine for purchase, if you know the size of your drill bits which is labeled in the bits storage box. 2. I've had success wiring in/connecting the DC stripped end of an old transformer to a traditional disposable battery device which as no plug for a transformer. Making the battery device, battery less for some items which needed it. Connected usually where the battery ends connect. Of course if the batteries were in series then the voltage is added all together. Often the DV voltage was a bit more than the batteries so the device runs a bit faster/stronger now which is often also nice. No longer wasting batteries and our environment and wasting your $$. I see thrift stores have old transformers for sale that could be used for this. Examples I remember, come to mind: Cat spinning in a circle under cloth chase toy, because cat would play for hours and hours and wear batteries out fast. Fuzz Balls remover shaver, because it was too slow especially as the batteries got weaker and batteries didn't last long and I had a whole sofa to go over! A table light display, because it was a cheap received xmas gift that was cute but we would never turn it on because in a few days the batteries were dead. 3. If the replacement transformer is recharging internal batteries in the device it's plugging into, you better make sure the new transformer is a perfect match and has any internal regulating electronics inside it. Also you don't want it to be overpowering and recharge the batteries too fast. This could all be a safety hazard with lithium batteries catching fire these days. Take care

Right on, wish you had a customer service line. I'd pay per call just to get quick answers like this

I may be mistaken, and I realize this video is edited well but I swear, I did not see homie blink ONCE in this entire video.... like damn, lubricate them eyes once in awhile bro, everybody's doing it.. lol, thnx for the info homie I appreciate cha

Good Stuff

Thanks for this video explanation. I have a question I am hoping you can answer. I have a Grundig Yachtboy 400 radio and have lost the power adapter. The socket is a negative tip (plus on the outside) and 9 volt, however it does not say what milliamp or amps the power supply should be. Do you have a suggestion/warning you can help me with. This radio is a good tool for long distance sailors such as myself. I also need to find the shortwave external antennae. Thanks for any help you can provide.

How do u find out the polarity of the device if not listed the volts and amp is listed then it has a solid line with a dotted line underneath

I watched your video and have read up on this a bit. It's all getting clearer but I just need a little clarification. I bought a used modem/router combo (used) that had the wrong adapter cord with it - didn't fit in the port. I thought I'd try and find a replacement to test it out. So I know I need 12V and + polarity. As far as Amps, it says 2.5A. Do I need that exact amount, a range or ? Is there a good min./max. to shoot for? Secondly, is the polarity in the tip/plug part the same as what is marked on the brick or are those two different things? Thanks so much!!

Hi. I lost my original ac adapter (30V output) i have one that is 32V. Do you think it will damage my device? Tks