9v Battery Eliminator (9v DC Adapter & Battery Eliminator) - Replace Your 9-Volt Batteries with Wall Power Supply

Works great. Helped me convert my 9v dc Gun Vault to ac. No more replacing batteries - or forgetting to replace batteries!

Bought it for granddaughter she uses it for guitar pedal says works great no hum or feedback

I bought two sets of these battery eliminators and power supplies to use for a couple old DOD FX series guitar pedals I bought recently. Since the power port on the pedals was old and obsolete, I decided to use these to attach to the battery connection. They worked well in powering the pedals and did not hinder the sound as poor power supplies can. The shape of the plug was also nice since I could fit the two on a power strip side by side. I cannot comment on the longevity of this product since I have had these for less than a month, but the longer they last, the happier I will be with them.

It is performing as it should no issues with the product. Would recommend.

I never knew these were real. LOVE it! I can run my Geiger counter 24/7 now :-) on the self. I recommend the Ludlum 2401-P handheld pancake GM, very nice unit. Just make sure it gets ship GROUND ONLY. GM tubes should not exceed 8,000' alt. THEN get one of these to run it at home/office/lab :-D Very nice.

The convenience, and cost savings make this worth the $10 it cost. It keeps my digital thermometer running without a problem.There are two issues with it:1. The red LED on the power block is very bright. I'm not even sure why it needs a light. Easy to fix with a piece of electrical tape to cover it. It still has a little bit of a glow, but not bad.2. It emits a high pitch whistle sound. At this point even cheap power supplies run quiet, so this is not great. I may have just received a bad one, but I can live with unplugging it when not in use.

I have a shotgun microphone that uses 9v batteries and it is annoying when you are in the middle of something just to find out audio stopped mid way. I haven't had to open the battery door on it sense I got this thing though. it accomplishes a simple task, but that is all I needed from it.

The 9 volt output on this battery eliminator is a generous 1/2 Amp (500 milliamps). A typical rating for a fresh 9 volt Alkaline battery is 550 milliamp hours; which means you can draw 550mA for 1 hour - or - 55mA for 10 hours (the same amount of total energy). In other words, this battery eliminator is capable of operating a device which is so power hungry (55mA) that it would use up a brand new 9 volt Alkaline battery in 10 hours. Ample power! Additional note: I found the in-line connector to be a welcome enhancement. It readily enables the separation of the device from the cord.... Hope readers find this useful info...

Bought this to replace the quick burnout of 9V batteries on guitar equipment with no plug interface. With a few modifications to the pedal battery boxes does a great job and works as advertised.

Love thus product. A little pricey but will eliminate the use of the 9v. When the weather gets cold so did the 9v. Then didn't want work.

So far it's working great on my exercise bike

The product is exactly what I was looking for. The connection mid-wire really helps in my application. The only reason I didn't give it five stars is that I haven't used it long enough. If it continues to function as well going forward, I would not hesitate to give it 5 stars.

It turns out that I can't use it without some modification. The TENS unit with 9v battery doesn't have terminal posts like a normal 9v battery installation.