Amazon.com: ZPower 312 Rechargeable Silver-Zinc Battery Made and Sold by ZPower. Warning: Other ZPower Batteries Sold on Amazon are not Authorized and can be Expired or Damaged. Buy ZPower Direct Instead! :
PowerOne Pocket Charger for ACCU Plus Rechargeable Hearing Aid Batteries (Size 312, 13 & 10)
Amazon.com: Power One ACCU Plus Size 312 Rechargeable, 4 Batteries : Health & Household
Power One ACCU plus p312 rechargable batteries, , 1 Pack (2 Batteries) - Walmart.com