Electrical question - wiring up a battery operated device

HMP

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Ok, quick backstory - I bought my home and my wonderful mother came and, knowing Im not big on decorating, put up a SMALL tree on a shelf that has led lights on it.
It's a plug in thing and, honestly, I loved how much light it gave off. Like, for watching tv at night, it's perfect.

So this year FOR christmas she got me a different little LED tree, but it's battery powered.

Ok, this is where I need your help.

So it takes 3 AA batteries.
BUT, it's got, on the box, one of those 'press me!' buttons that links into the unit, takes two little watch batteries for display use.
The harness that has those batteries plugs in and out of it.

So what Im wondering is could I splice a plug-in to that harness and plug it in? Or will the wall outlet give too much power and cause issues/sparks/fire etc

What can I do?
I dont WANT to do the 3 AA batteries, it'll wear out quick, it'd be nice to do the plug in.
 
You can as long as its output is equal to the dc voltage of 3 aaa batteries.
 
So it takes 3 AA batteries.
BUT, it's got, on the box, one of those 'press me!' buttons that links into the unit, takes two little watch batteries for display use.

What are the numbers for the watch batteries?
LEDs are designed to run on a fairly large voltage range. How the LEDs are wired would give a better idea on what you could do.

AAs are 1.5v each x 3 = 4.5v

Without knowing any more than the AA batteries you could find a small transformer that has an output of 4.5VDC. Use that to take the place of the battery pack.
 
What are the numbers for the watch batteries?
LEDs are designed to run on a fairly large voltage range. How the LEDs are wired would give a better idea on what you could do.

AAs are 1.5v each x 3 = 4.5v

Without knowing any more than the AA batteries you could find a small transformer that has an output of 4.5VDC. Use that to take the place of the battery pack.
This would be the quick and easy way to solve it. Considering the easy availability of these ac/dc power adapters on eBay & Amazon, it shouldn’t cost very much either.
 
Post a pic, what you’re describing sounds like you’ve got a tree that runs on aaa batteries and a remote that runs on button batteries, no idea what you’re saying about them being wired together or plugging into each other, is there an electrical connection.

Eventually you’ll need a small power supply to feed the thing. A USB port is 5v dc so if you’ve got an old usb wall wart sitting around you can just use it and a cut up old usb cable to make it work.

if the button batteries are only running the remote don’t worry about them, they’ll probably last a year.
 
@rdinatal and @Jerzsubbie
LR44, which, according to google, is 1.5v each.
It has 2 of those in the switch
So it seems that the LEDs have an operating range of at least 3.0-4.5v DC. That should give you some flexibility in finding an adapter. I think 3.7v is common so that would be right in the middle of the range.

One example on Amazon $6
SMAKN DC 4.2V/1A 1000ma Supply Adapter,Smart Device Adapter (Charge) 100-240 Ac(US) https://www.amazon.com/dp/B07RHRVMXH/ref=cm_sw_r_cp_api_i_L9UOEbBZHN157
 
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Captain Obvious sez, "Be sure you have the polarity right before you solder any connections. "
090914_Signals_promo.png
 
Be sure to have video running when you plug it in. :D

The tree is running on batteries so it's DC. The number of batteries can help determine the voltage being used. But, 2 batteries could be configured to provide twice the battery voltage OR it they could be configured to provide the same voltage at twice the capacity. Ideally, you'll measure this with a meter. The wall outlet is AC. The wall transformers being recommended convert the AC to DC and some provide multiple voltages by selection if a switch.
So, find out the actual voltage being used by the tree. Buy a transformer that provides that voltage. Find where the power leads from the battery pack feed into the tree. Observe the polarity of the connections. Add in a connector to work with the transformer, making sure the polarities are correct. Adjust the transformer voltage to the correct voltage. Plug in and watch the sparks fly. What's the worst that could happen? BTW, is your home owners insurance paid up?

Or have your mom buy you a new tree.
 
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They sell a universal one at wal mart and places like that. Has a switch with adjustable volatage. Set it to 4.5 v dc. Thwy usually come with many different plugs. But if you have to splice wires be sure to keep the pos and neg wires in correct postion
 
I'll post pics tomorrow, going to be heading out shortly. But, hopefully, the pictures will explain things a bit better.
I do thank you all for the CONSTRUCTIVE advice and help ;)
 
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I forgot about this thread, but here is what Im working with

Here is the switch, but then there is a small plug that goes into the tree itself, which is why I was wondering if I could cut the switch off and wire in a plug in of some sort


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JJCMCsX.jpg
 
Replacing the batteries is easy, that’s just 3v with almost no draw, but it looks like there is a circuit board under the battery compartment and you probably need to keep that.
 
Sorry if it’s been said already.
Solder pigtails to the existing terminals and buy 110 v AC to 3 v DC adapter. Make sure you don’t cross the polarity.
 
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