OLYMPIA — Look around an average home and you’ll find 11 battery chargers re-juicing various electrical devices from toothbrushes to lawnmowers, says one study. Cell phones, laptops, power tools – the list of little-noticed power sucks goes on. The Washington Energy Office estimates that Washington residents together own about 30 million battery chargers. Holding these small, numerous and largely overlooked energy users to efficiency standards like those in Oregon and California could eventually save Washington consumers $27 million a year. That’s the argument of environmentalists and other proponents of legislation (HB 1100) that has passed Washington’s Democratic-controlled House but faces an uncertain future in the Republican-ruled Senate.