so i was thinking about upgrading my 1/10 rc brushless drift car by giving it a better battery. Im running 8.4v 3000 mah Nimh battery right now with a 3300Kv Brushless motor and an 60A ESC. I was thinking about getting a Gens Ace 7.4v 5300mah 30C battery but im not sure if that would give me more power and longer run times. So, basically my question is what is the best lipo battery form my setup if im looking to reach a max speed of at least 30 mph( with on-road tires) and at least a 10 min run time. I'm kind of a novice when it comes to rc cars so thanks for your help?

with a 5300 that thing will last ya more then 1 h dude

Ok if you want to aim for 30mph then you need to know the overall gearing of your car. This is affected by the pinion/spur ratio and the internal gearing. The pinion is the gear on you motor, and the spur is the gear it is meshed with on your drivetrain. You work out the ratio from the number of teeth on each. You should be able to find the internal ratio for your car by searching

The LiPo battery may well give you more acceleration, and a longer run time. It cannot give you a higher top speed on the same gearing because of the lower voltage. It may allow you to "gear up" by changing you pinion and/or spur because of the extra power available though.

HTH

i've do a little more research and i think im gonna go with a 5.5T 6000Kv motor, a 5300mah 3s 30C lip, and my 60A esc. My only question is will my esc be able to handle it?

If both the motor and the ESC you're on about are EZRun then you should have no problems running that motor as the 5.5T come with the 60A ESC. I wouldn't really be worried about your ESC being able to handle it on 3S though, because if your drivetrain isn't flippin' amazing your car will self destruct running that setup. If you're wanting to drift with it chances are it'll be VERY hard to control!

What chassis do you have? An example is, my TT01E on standard gearing, 6000Kv @ 3S gives me a theoretical speed of over 60MPH !!!!!!!!!! You're into speed runs territory and serious component failure on a daily basis. On 2S it's a more reasonable 40MPH, but even then you're looking at around 10-15 minutes of run time I reckon.

I'd recommend trying a 9T motor on 2S for around 30MPH depending on gearing and it'll give you much better run times.

Hope that helps