I have a 12v3a battery backup with 1 dc barrel connector on the end.

How can I power multiple 12v devices without needing to solder them, thus opening them and voiding the warranty.

One device is 12v1a the other is 12v1.5a.

I would rather not buy 2 of these backups.

Keep in mind I have never touched a soldering iron in my life.


You want to connect the devices in parallel, not series, if they all want 12 volts.

You can buy "Y cords" or "Splitter cables" that have a single female barrel connector and two or more male connectors - no soldering required. Male to female barrel connector cables are also readily available, if the splitter ends won't reach all your devices.


I use a lot of 12 volt devices powered by 5.5mm x 2.1mm barrel connectors, from Arduino Unos to low-power MFJ ham radios.

The male side (the part that shows metal) is the power supply side.

There are a lot of splitters available on eBay and Amazon. Some only split out to two connectors, and others can range up to 1 Female to 4 Male connectors.

I find that using "CCTV" as part of my search makes it easier to find them.

Here is one example:

Super Power Supply® 5.5mm x 2.1mm 1 Female to 2 Male Splitter 2 Way DC Power Cable for CCTV Security Camera 5.5x2.1mm for $3.99

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Since your power supply is 3 Amps you should have no problem running several devices from it.


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