How to power lights with power tool batteries

In this video, I cover how to use cordless power tool batteries to power lights and a transformer which is not always needed. Using a transformer to transform 18 V power into 12 V power is only needed if the light your using isn't rated for the voltage of your battery. Remember to always fuse your lines for fire safety as well as to never over power the wattage or voltage rating of any device or it may ruin it..😃