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
MIGHTY MAX BATTERY 9.6V 2000mAh NiMH REPLACEMENT BATTERY FOR TYCO FAST TRAXX MAX3440695 - The Home Depot
Tyco 9.6v battery pack and charger substitution set.