Signs of Low Battery
 

What are some signs of a low battery for the car? my battery life on a full charge is shortened by a lot (about t 1 1/2 minutes)

Have you tried charging the batt twice? The z-cars charger puts out a lower than normal charge so you can easily do it twice to try and fill up the 100mah batt.

yup, tried it, no difference. think i need a new batt?

i suppose but 1st check for things like lint in the gears and of courrse fresh batteries.. are you useing diff motor?

no. everything is stock.

If you need new batt's you'll find that your car will not charge for 45sec's to a minute. Mine charged for like 30 sec's on low batt's. The steering will not work properly and run time will be really bad.

Cheers.