Power Supply Cable for AA Battery, Replace AA Battery

This adapter worked great for a few different LED lights I had. I have a few fake neon signs as well as standard LED "christmas lights" and they all were able to be powered easily with this. I tried ones that needed 2, 3, and all 4 batteries and they all worked perfectly. I just powered it with a simple 5v USB A adapter as well, nothing fancy. Price is okay, could be better but if you don't want to keep going through batteries, or having to recharge them this works great. It is also great because with this adapter you can now use smart plugs as well to automatically power things up and down. Highly recommend!

I could not appreciate this product more than I do. I have a ton of holiday decorations that take batteries and I was forever changing them. I read a comment someone made online about using a converter instead of batteries and I found this product on amazon. It’s a terrific value. No more spending a ton on batteries. You simply put the battery with the cord into your device with the dummy batteries and plug it into the wall. You’re essentially making a battery powered item cord powered. I’ve bought so many of these. They all work great. I’ve bought aa and aaa. There is even an option for three items on one plug in by the same brand. Wonderful product. Super easy to use. Very convenient. I’ve had things plugged in for months at this point with zero issues.

I tried the cheaper versions of these AA battery power supply cables and had mixed results. Some were awkward to fit, and I had trouble getting the battery cover to close properly, which made the whole setup frustrating. These Lenink cables just WORK. The flat cable is a total game changer because it makes it so much easier to close the battery compartment without forcing anything or worrying about damaging the cover. Yes, they cost a little more, but honestly, spend the extra money. It is absolutely worth it for something that fits better, works reliably, and saves you the hassle.

I bought this for my cyberpunk nook mini. I dont need to worry about getting battery drained anymore. My nook always ON now! Happy buyer here!

7/2/2025 : In full honesty, I did swap out this fake battery solution for one from another manufacturer. They both work out about the same, I just wanted to plug it into a UPS, to make it far more reliable. I have used battery replacements from this company for a few years now, and they have all worked perfectly, as long as you are delicate, and you use the right voltage for the right situation. 4/6/2025 : It powers my smart lock, so I am thrilled! I checked that my batteries were in series by ensuring that removing one made it turn off. I have this plugged into a 5V 2A usb outlet. Now, I just need to get a power bank that has the right voltage and does pass-through charging. I am deducting a star because the material is scant, and implies that there is no over volt protection, meaning if you plug this into a 9V outlet it might fry your components. Not sure if that is the case, because, again, poor documentation.

I just received this and connected it to a small desk lamp. It works great. The only thing I do have to say is when you look at the instructions it may say for AAA batteries but they definitely fit for double A. It must be Universal instructions.

I love these for my Christmas glitter water globes. This saves me from constantly having to change the batteries. I plug these into an automatic timer too so my decorations turn on every evening and I don’t have to worry about them.

I purchased this precisely to run a tape recorder that I was using to play old cassette tapes that I was going to capture on my computer. The tape recorder uses two batteries. I set it up accordingly and used the USB port cable provided with the battery set to power the device. I plugged the USB cable into a USB outlet on my computer. Within a few seconds, the recorder began to emit a burnt smell and there was a puff of smoke. Two AA batteries should be around 3V. I'm not sure what the voltage is from a USB cable, but It was my understanding / expectation that the Lenink Power Supply would recognize that it was in a 2 battery slot and would adjust the voltage accordingly. There was nothing in the documentation to WARN against using the supplied USB cable if configured with 2 batteries. I have no idea when the USB cable is safe to use....or if this Leninck Power Supply is EVER safe to use. Kind of scared of it destroying other devices, now. I

Hard wired an eve aqua with these and it now works a treat and I never have to replace these batteries again.

Excelente funcionamiento. Cumplió las expectativas

I did not use the charger at all, so I can't comment on it. I only wanted the package for the spare Dummy Batteries. These Blue Dummy Batteries are the correct length at 50.1mm, the same as a Duracell AA Battery, and this is exactly what I wanted. I paid a little more for this kit, but delivery was the next day. so it was worth it. I found that other sellers selling the yellow batteries sell them cheaper, but they are only 48.6mm long, so they are too short. Also, these batteries are substantially heavier than the yellow dummy batteries, and weight about half the weight of a real Duracell Battery (I am estimating). It is clear that there was some effort made in producing these Blue Dummy Batteries, they are well made, and even the packaging is detailed and complete, and with instructions.

This is a brilliant little idea that works really well and lets you run things without the hassle of replacing batteries. Its a great length and its compatability is excellent

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