Anywhere they sell batteries, they have to, by law, accept the failed/used battery. There is your local dump/recycle/transfer station, Walmart, Advance Auto, Auto Zone, Pep Boys. They should be a freebie or at least no more then the price of a cup of coffee.
Dave W along with my DW, Susan and our poodlepups, Callie & Molly,2011
Ford F250 6.7 CCLB, 5er Hitch Option w/B&W Hitch,,Ride Rite air bags, 2014
Montana High Country 343RL (38')w/disc brakes