Nikko VaporizR RC Amphibious Car LiIon 2S and tyres redirected PART 1 - YouTube
Nikko Vaporizr 6V battery - RC Model Accessory | Alza.cz
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. :
Pololu - Rechargeable NiMH Battery Pack: 6.0 V, 2200 mAh, 3+2 AA Cells, JR Connector