WAC 173-331-220
WAC 173-331-220. Condition of used batteries
(1) A purchaser must provide a used battery in a fully-capped, unbroken condition to qualify for waiver of the core charge. A retailer may refuse to accept a broken or uncapped battery, or may condition acceptance upon provision of a leak proof, acid resistant container, such as a plastic pail, holding the broken or uncapped battery.
(2) The department shall provide on its 1-800-RECYCLE Hotline a list of recycling outlets available for broken and uncapped batteries.