Need a little extra boost to help get the job done, opt for the EF3000iSEB. It's loaded with all the same great features as its counterpart and features Yamaha's exclusive Boost technology. High-quality electricity, wherever you need it. Boost Control The Boost Control Unit (BCU) senses when extra power is needed and boosts the output for up to 10 seconds, ample time to give air conditioners, power tools and equipment that extra boost of power they need to start quickly and efficiently.