You will receive a bulk lot of 639 brand new PowerMax PM312 hearing aid batteries. All cards are sealed and in original packaging Stored in a climate-controlled, dry location Each card clearly labeled with expiration date: 02/2027 Includes full inner boxes + retail packs (as shown in photos) Ideal for resellers, audiologists, or frequent hearing aid users looking to stock up. Description: Massive lot of 639 PowerMax PM312 size 312 hearing aid batteries. Zinc-air batteries provide consistent voltage and long shelf life. 6 batteries per card Expiration: February 2027 1.45V stable output Brown color-coded tab for easy identification Made in Germany ? trusted EU quality ? Free shipping ? Sealed retail packs ? Long shelf life ? great bulk buy ? Fast handling time ? Tamper-Proof Return Policy: Bulk items will include a discreet UV or tamper-proof identifier to protect against part-swapping. We accept 30-day returns as long as all packaging is unopened and intact.