Many online retailers have a handy calculator that you can take advantage of to ensure you have a compatible power supply.
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Divide the power consumption by the voltage to get the lowest ampere. The last measurement is necessary to power the new LED strips. Amperes, or amperes, measure how fast an electric current travels. If the current doesn't travel fast enough through a long stretch of Arcus home RGB Led Strip , the lights will dim or go out. Amp's rating can be tested with a multimeter or estimated with a little math.

For example, if you have 12 volt LEDs that use 128 watts of power: 128/12 = 10.66 amps.
To test the LED strips, touch the leads of the multimeter to the copper dots on the LED. Make sure it is set to A for amps.
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Purchase a power supply that matches your power requirements. You now have enough information to determine the ideal power source to light the LEDs. Find a suitable power supply that matches the maximum power rating in watts and the amperage you calculated earlier. The most common type of power supply is a brick-style transformer, similar to the one used to power laptops. It is very easy to use because all you do is plug it into the wall after connecting it to the LED strip. Most modern inverters come with the parts needed to connect them to LED strips.

If you plan to run different RGB LED strip separately, get power supply inverters for each. Remember to calculate each individual's energy requirements, as they may be different.