Hero 1

 

Main Batteries: (4) 6 Volt 4.5MhA

Charger: 25 Volt  Amp

 

Remote 6 Volt 1.2 MhA     Available for 15 dollars (+Shipping)

Charger 6 Volt 285 MA*

Hero Jr

Main Batteries: (2) 6 Volt 4.5 MhA

 

Charger 12 Volt  These can be made using an available 12Volt 300ma charger and purchasing a plug from Radio Shack part# and using this diagram to wire it up:
 

Remote uses a standard 9 volt battery

 

 
Hero 2000
Main Batteries: 12Volt 24Ah

Charger

Remote Batteries 7.2Volt Nicads (R/C car batterys)

Remote Charger: 7.3 volt DC 300ma