The battery life all depends on your driving. For example the Traxxas Rustler VXL's battery life will get about 20 minutes (Still depending on how hard it is driven). But don't think that 20mins is nothing, its actually pretty good for an electric r/c truck.
It takes 4hours for a 1500mah, it takes 8hours for a 3000mah battery
yes.it does last a long time on one charge. ive seen youtube videos where it lasts at least 20 to 30 min. but they could have lied.
if you are meaning the RC truck, about 22 in. long + the rest of the info go to traxxas.com
With a charger specifically designed to charge this battery.
I have learned that when i get new batteries for my hobby cars you want to fully charge the battery to the recommended hrs, you want to charge the battery fully because it will improve how long your battery will last on one charge and how long the battery's life will be.
It doesnt really mater if lipo you need to check with the place you bought it is nimh you charge it intil it gets warm NOT HOT WILL EXPLODE LIKE BOMB if charged wrong hope this helps
How long does it take for an 18v battery to charge
I assume you mean how long to charge the battery. You should never let the alternator charge a dead battery if possible. The alternator is designed to keep the battery charged but not to charge a dead battery. You put a strain on the alternator and it can cause a diode to burn out. Drive home and then put a battery charger on the battery to fully charge it.
Indefinitely.
2 hours
Depends on the condition of the battery. Most will hold a charge for at least 6 months if they are not connected to anything.
As long as both batteries are the same voltage, you can jump start with the battery. If you want to charge the battery then use a battery charger.
How long should I leave a battery on charge