Dr Richard Nock on Twitter: "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
Tyco Safety Products WT4911BATT Lithium Battery For DSC WT49
Amazon.com: Mattel 9.6V Turbo Battery Pack/Charger : Toys & Games