Lenink Power Supply Cable for AA Battery, Replace AA Battery

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 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!

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 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.

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 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.

This was a great product. It allows you to power any device via USB that you can power via AA batteries.That said, there's a huge caveat here. Not all USB power is the same and it may not be enough for your device. Four AA batteries in four bank arrangement like this can supply anywhere from 1.5V to 6V depending on how the batteries are wired. Also, AA batteries can provide 2A of power. So your four battery device could be asking for as much as 12 Watts of power.Now, that's unlikely, but you should expect at least 1.5 Watts of power draw from any AA device. So let's look at what a USB-A port can provide. Typical USB-A 2.0 ports can provide 5V at 500mA for 2.5W of power. So, if you're powering something small you're just fine. On the other end, a "fast charge" USB battery charger allows power draw in excess of the limits. Now you're looking at 5V at 1.5A for 7.5W of power.What this all means is if you're using a big block charger like one of the ones Apple uses for the iPad, you're fine for many applications. But if you're powering something with a huge power draw from the batteries, this may not be enough to handle it.

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

These are a great little find. Removes the needs for batteries in a lamp that I have on a dresser.Able to plug it in to a smart plug and can turn it on and off whenever!

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

Put this in a battery operated dressing light mirror, works perfectly. My daughter never used the light as it was eating batteries all the time and eventually you just stop replacing them / voila, problem solved. It’s now plugged in and the lights are working permanently. No more battery changes !

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