dual batt prob......
 

i need some help i just did a dual batt mod for my zzap and it works fine super fast but it wont charge on the controller how do i make it work please help me do i need to mod my controller to????

you have to make a custom charger the one on the controller wont work...

where can i find out how to do that

here is a link that will explain how to charge your car look under controller
mods http://webpages.charter.net/mattydiah/zipfaq/

but do me a favor and try and charge the car normally take it off the controller wait a minute and charge it again and see if that works and
let me know some people say it does work but i dont know for sure
so try that and let me know thanks

use three batteries in your controller.

or wire in a a/c->d/c adapter plug and get a 4.5v adapter between 500 and 1000mA. do a search on the boards for pics/part numbers etc..lots of people have done it and posted already.

when away from home i use a 4.5volt battery pack(3-AA's) with an adaptaplug on it for charging. my plug on the controller is switching so i can leave the two AAA batts in while charging.

on a dead car, i charge twice for two *150mA* batteries. on a car that moves but is just starting to slow down..1.5 charges. if ive been using it for 15 minutes, and it's still moving fast..i'll give it a 1 charge refresher.

i have yet to blow a pcb, motor, battery or controller with this method.