Batteries
 

What difference would it make if you changed the stock battery to a 50mAh NiCd or a 150mAh NiCd?

It makes it run longer with the same speed. You'll need to charge it 2 or 3 times to peak it off. NiMH batteries are also semi memory free, but don't push your luck:)

150's are supposed to run longer, but I found my NiCd 50mAh's did just fine and lasted 3 times as long as my original Zip batts. Where are you getting them from? I need an online source to buy them. For now, I've been buying a $5 toy from walmart that has a NiCd 50mAh already in it and just taking it.

It also helps if you have a peak charger, but most of us don't

yo stridex how long are you charging those nicad for i saw you post about them along time ago so i went out and bought some of those toys and used them for a dual batt mod and thay dont last very long at all i charge them for 90 seconds with a 3 volt 700mah charger thay run real strong from the start then die in about 30 seconds

I bought a toy called hot wheels kit car. It comes with a motor batteries and stuff. You can get them right now at Target for $1.98.