Just got myself 8 AAs (Rechargeable) from IKEA for my custom 9,6 V battery pack which I use for my Nikko Super Cruiser. A bit overkill when you count the capacity lol. :
nikko 7.2 v 1600mah battery pack - Buy nikko 7.2 v 1600mah battery pack with free shipping on AliExpress
old slot in 9.6v ni-cd battery pack charging problem - General - Electric - MSUK RC Car Forum
Amazon.com: 12V 5Ah SLA Replacement Battery for Nikko NB412 : Health & Household
Nikko Toy Vehicle Accessories | Mercari
Nikko 9.6V Rechargeable NICd Battery Pack Lot Fastlane Taiyo RC Aurora Huge Capacity Li-ion 16500/800 mah Battery Pack (Hobby RC Remote Control Cars) for Sale in Heathrow, FL - OfferUp
Nikko 6.0v Ni-Cd battery cassette
Nikko Battery South Africa | Buy Nikko Battery Online | WantItAll
baterie NIKKO Amphibious 6,4V | RC SERVIS
Amazon.com: 9.6V 2000mAh NiMh Replacement Battery for Nikko RC Cars + Smart Charger : Toys & Games
Charging Nikko 9.6v 700 mah slot in battery - General RC - MSUK RC Car Forum