Depends on the Rc car
No
As of today, sadly there are no known ways or methods for extending a life span of any battery, including an RC Car's battery, although turning the RC Car off when not in usage might be helpful.
Traxxas 7 cell battery
A RC Car because it requires less money and less work.
Someone can buy a spare battery for a RC car from a number of companies such as Amazon. Amazon has a large selection of RC spare batteries from a number of manufacturers.
Yes it will
Yes. Most usually do.
Yes, you can buy an A4 car at a local hobby shop. The Audi A4 comes in an electric powered RC and is powered by a battery, which requires an average of 2 hours per charging.
You can get 15 to 40 minutes of battery life depending on the type of battery and how hard/fast you run the rc vehicle. http://www.rctech.net/forum/electric-off-road/230270-new-rc-battery-life.html
The MJX RC Technic Ferrari 430 remote control car typically uses a specific type of battery, often a rechargeable lithium-polymer (LiPo) or nickel-metal hydride (NiMH) battery. To charge it, you will need a compatible charger that matches the battery type and voltage, usually specified in the car's manual. Look for a charger designed for the battery type (LiPo or NiMH) with the correct voltage rating, ensuring it's from a reputable brand for safety and efficiency. Always follow the manufacturer's recommendations for charging to prevent damage.
it takes a 9 volt battery
An RC car battery will likely last more than a year. They vary from battery to battery, however, technological advances in recent years have greatly increased the time that these batteries last.