If you mean INTERNAL battery, then actually, yes!
Your gonna need a battery (lithium cr1616) and a REALLY small-ass screwdriver
See the little screw at the back of the cartridge near the top? unscrew it and remove the cover on the back of the cartridge. Now examine it's innards/
Use the screwdriver or a knife to break off the metal thing locking the battery in place. remove the dead battery. put in the new battery. tape the battery in place since you had to break the battery holder.
Aaaaannnnddd yer done
(so... not rechargeable but it IS replaceable)
