This Cordless Fuel Transfer Pump, now $44.99 on Amazon, is down from its $99.99 list price. It's also the best price we could find for one with these specs by at least $10. It runs on DeWalt 20V or Milwaukee 18V batteries (sold separately) and moves fuel at 3.2 gallons per minute with an automatic shut-off sensor for one-handed use. Three included adapters fit various North American gas can openings, and a sealed motor design is built to reduce spark risk during fuel transfer. It ships for free.