CR1216 CR1220 CR1616 CR1620 CR1632 CR2016 CR2025 CR2032 CR2430 CR2450 CR2477 CR2354 Hearing Aid Batteries Size 10 Size 13 Size 312 Size 675 Battery Packs 21700 16340 / RCR123A 14500 10440 CR2 Chemistry Alkaline Primary NiMh Rechargeable Lithium Primary Li-Ion Rechargeable Lithium Iron Phosphate ...