I have never seen a replacement kit in one of them.
211, 212, 214 and 221 use 2x 5pcs pack AA NiCd.
213 use 2pcs D, NiCd
211,212,213 and 214 must b3e solded to the right AC voltage, 120V uncle Sam or 220V Europe.
221 likes any AC voltage between 90 and 230V