you got nothing to loose trying it, however i call it urban legend... think of your battery as a plastic container, if that plastic container can store 1 gal of water, it does not matter how you filled it with water, say you filled it directly from the tap, or you filled it by pouring a glass of water one at a time, it will only store 1 gal of water and that same gallon is what you are going to take out from...