Since the lights work on the battery charger and it may be overloading the battery charger but most of them tolerate it for short times we know the issue is the old transformer and new power supply.
12v ac vs 12v dc landscape lighting. Light Bulb None 2W 3000K 3W 3000K 3W 5000K 35W 3000K. Thats a huge electrical current. I purchased the Dekor WIFIAPP dimmer and it requires a DC output transformer.
The landscape lights do not care if they are AC vs DC. If the voltage drops below 115 due to wire resistance then push it back up so it is around 115V 12V. 12V AC vs 12V DC Landscape Lighting.
I was told that the DC output was the issue and I am. Tools Home Improvement. Some of the very expensive LEDs dimmed in about a 4 stage step down process.
Your battery charger test reveals the problem. Hands down 12V is the safest option to power your residential landscape lighting. Available in a variety of fixtures and colors so you can find the right light for your project.
So in a nutshell AC household light bulbs are good for household use where almost all electricity is supplied by providers that utilize a AC current. However the DC low voltage system has the clear advantage of safety. DC light bulbs are good for remote and self standing power supplies such as DC batteries cars boats yachts solar off grid systems trains airplanes and more.
What a mess especially when dealing with online platforms that more often than not only list part of the product information. AC DC 12V low voltage power makes this light safer for people and pets. This fixture lights up your outdoor space with a soft and anti-glare glow.

