Originally Posted by
John Lanciani
So to make it as simple (and unrealistic) as possible, if we ignore all of the losses and efficiencies and all of the other real world factors that make this a difficult question to answer; The 24 volt 2 amp hour battery contains 48 watt hours ofenergy and using the 8 amp 120 volt drill consumes 960 watt hours of energy per hour.Using the corded drill at full output power for two hours consumes 40x more energy than the battery contains.