Is Battery Equalization Right for You?

Should battery cells be equalized? The July 4th holiday weekend sent me into super busy mode so sorry for not posting in a few days. I received an email from a reader today though that asks a good question that I'll bet a few of you may have. Dave writes in: Ed, I saw a product advertized as "Battery Equaliser 12 Ounce # BE12oz" which is to increase battery longevity... what do you think?I have two four year old 8D wet cell batteries and these things are expensive! Cat 3208120 amp ...