Early pacemakers were recharged using induction - similar to the way rechargeable toothbrushes are recharged.
However, today, with the advent of better and smaller batteries, they are simply replaced when required with a simple surgical procedure.
Pacemakers use litihium-iodide batteries. Although there are five major pacemaker manufacturers in the world, four of them get their batteries from the same source--Wilson Greatbatch. The one company that does not (Biotronik) makes their own batteries.
The technology is very advanced and allows for a predictable discharge curve, meaning that the end-of-life of the battery can be easily determined months in advance.
Most pacemaker batteries are a little over 2 volts.
Battery life typically ranges from seven to 15 years, depending on the number of leads the pacemaker is configured with and how much energy the pacemaker uses.
Doctors do it.
Lithium iodide is used in long-life batteries, like pacemakers. See related link.
Yes, the isotope plutonium 238 was used in the past as power source for pacemakers.
Because they're small. If you had 4 AA batteries, it needs to be bigger.
Probably not, but the radioactive isotope Plutonium-238 is used in nuclear-powered pacemakers.
Zinc-mercury oxide battery - often used in hearing-aids. Lithium-iodide battery - Lithium-iodide chemistry is used in pacemakers and hearing aides because of their long life.
DC
They use 2x AAA batteries.
curium
4 AA batteries is what the light takes.
SulfuricSulfuric
electrolytic battery
Depends upon what type you ask about.