Giving Receiver Power
 

How Do I give a receiver power through the BATT port? instead of using ESC

You need to get a little holder thing that holds 4 AA's and it has a red and black wire.

Looks like this:

http://store1.yimg.com/I/internet-rc_1868_6403940

can a 7.2V be hooked on?

what is the maximum voltage u can hook on a receiver?

No way you can stick 7.2v on it.... I think.

4 x AAs as far as I know

You can use 7.2, but it will stress the reciever. Servo's work best on 6V, but they will work fine on 7.2. The problem isn't so much with the 7.2V, it's the peak voltage that can be significantly higher than the 1.2V per cell that the pack has printed on it.

Tamiya ESC's have a BEC (Battery Eliminator Circutry) voltage of 7.2V. Those 4cell packs are alright, but the "AA" cells they use wear quickly and are a bit heavy and tall for practice use. Get a good quality NiMH cells in a 4 or 5 cell configuration and stick that in your car. A peak detection charger with the potential to charge at 1A is also required so that you don't damage the cells.

Why do you want to replace the BEC wire on your ESC with a 4 cell battery? Radio Priority Circury is standard on every ESC since about 1998, and it was still very popular before then. If you are using a mechanical speed control that uses a servo to operate the throttle then you may benefit from a separate pack because it will keep the car from running away when the pack gets low. An MSC is not an ESC. An MSC uses a servo to operate a switch with several resistors that help dissipate extra voltage. An ESC is often a small box with several heatsinks. Higher end ones may have a capacitor. Make sure you have an ESC before you go buying a separate pack, because if you are still using an MSC then it's better to save up for an ESC and dump that crappy little switch. ESC's are infinatly better.

This may seem like a dumb question even though 'there are no stupid questions' but are you saying that my Novak Rooster doesn't need a black box holding 4 AA batteries to keep my car from running away?

If so then I have been running those without need for years :lol:

Since we're on the topic....

I figured that the best is to go for 6V (5x1.2V) pack.
How many mah should one use? I've seen 600mah and up to 1100mah.
What's the real difference? Which is advisable to use?