✩ Ni-Cd 4/5SC Sub C 8.4V 1200mAh Rechargeable Battery for Model toys RC Car P41 - Rome Tech
NIHM 6.0V GIGA Pack | bol.com
Li-ion 7.2v 2250mah Battery For Nikko Remote Control F1 Ferrari Car 14500c2s3ph - Rechargeable Batteries - AliExpress
Make your own RC Car Battery Pack or Repair NIKKO Ni-Cd 6.0V-620mAh - YouTube
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. :
MIGHTY MAX BATTERY 9.6V 2000mAh NiMH REPLACEMENT BATTERY FOR NIKKO RC CARS MAX3440677 - The Home Depot