Contractors have decided with which battery pack they are most comfortable for cordless power tools and it's 18V. An 18V power pack is used by 91.0% of contractors responding to CONTRACTOR'S 2012 Power Tool Study, conducted in January. The 18V power pack was followed in popularity by 12V at 26.5%, 14.4V at 19.6% and 24V at 19.1%. Other voltages came in at 10% or less. A mere 0.8% of contractors use a 36V battery.
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