Brushless motor?
 

I'm running a venom brushless motor/esc and the last time I had the truck out it seemed to be down on power. Is there any way like with a meter I can test the motor to see if its good or starting to go bad? Thanks.

sounds like the battery.

I did make a couple of different runs with different batteries. I run 2s lipos and there not that old so they shouldnt be causing any problems. I have since put on a new connector but havent had a chance to run it yet I'm not sure if that coulda been it or not?

Your batteries, if they are LiPOs and they were stored over the winter, could be simply losing their punch.

LiPO's as they age, increase internal resistance, which effectively decreases the C-rate. When they are stored fully charge, this is

If you store your LiPOs at around 3.75-3.85 volts per cell, this is the best level to store your packs.