Duracell® Easy Tab® Hearing Aid 8 Batteries Piles. Mercury free. Easy to insert. 13. Zinc air. Ease-of-use commendation, Arthritis foundation®. Arthritis.org, Arthritis.ca, Pro Arthrite, Arthritic friendly, The Arthritis Society. DA13B; replaces all size 13, including DA13, 13HPX, AC13E, AC13, 13A, 13AE, R13AE and PR48. Easy to hold. Easy to insert. Easy to remove. Guarantee: Duracell guarantees this battery against defects in material and workmanship. If you are not completely satisfied call 1-800-551-2355 toll free (9am-5pm E.S.T.) for complete details. Customer service: 1 800 551-2355. TYY number: 1 800 341-0654.