Dr Richard Nock on X: "Rebuilt a Tyco 6v battery pack with a friend last night. 24 year old NiCd cells had leaked and rotted one of the contacts. Replaced with 2.3Ah
6.0V Jet Turbo® NiCd Battery Pack & Charger - Mattel
How to fix a Tyco RC 6.0V Jet Turbo Battery or Nikko Taiyo - YouTube