Some people do believe it is true. There are many different methods. One I have read is to hold the object you wish to imbue while meditating, and in stead of grounding excess energy, envision that it collects in the object. You can specify type, method of access, and more. There is plenty around the internet on the subject. Just use caution when considering what you've found.
Do you think with what nobodyatall says that you could do the same with words, writing them on a peice of paper and transferring energy to them so when you use those words they have a significant meaning?
Well for 1) item that you are charging needs to have a crystalline structure(that is, it needs to have or be a crystal... at least to make it easier to charge and for it to maintain the charge), for method i`m using it takes around one lunar month(28 days) and it must be completed on the night of full moon.
As for method itself its fairly simple, just take item you wish to charge and start infusing energy(magick) in it for 1-2 hours each day(you will know that you are doing it right if you feel tired/exhausted after infusing energy in the item), after you are done(on the night of the full moon) you must leave the item(now artifact) to bathe in the moon light(I call it "cooking") from rising of the moon till morning(use fresh spring water as a medium to increase amount of energy that stays in the item/artifact and to focus additional energy during the "cooking" period).