Medical Device Batteries: Types, Pros, Cons, and Selection Guide

1. Lithium-ion (Li-ion): Most common; lightweight, high energy density, fast recharge, long life. Cons: expensive, sensitive to overcharge/overdischarge.
2. Nickel-metal hydride (Ni-MH): Less expensive; lower energy density, shorter life, memory effect.
3. Alkaline: Disposable; inexpensive, long shelf life, non-rechargeable.
4. Lead-acid: Oldest rechargeable; inexpensive, high energy density, but heavy, bulky, requires maintenance.
5. Silver-oxide: Disposable; expensive, long shelf life, high-temp tolerant, leak/corrosion resistant.

Choice depends on device power needs, size, weight, cost.