Write an article based on this "Purchase a high-output battery. Make sure your motor can handle the extra power. Remove the existing battery. Place the new battery into the compartment. Charge your battery regularly."
No matter how tricked out your RC car is, it can only go so fast with a subpar battery. If you really want to leave your competition in the dust, opt for a battery with a greater voltage capacity, such as a nickel-metal hydride (NiMH) lithium-polymer (Li-Po) pack.  RC cars have been known to attain speeds of up to 100 mph (160 km/h) with cranked-up batteries. You can potentially add 15–20 mph (24.1–32.2 km/h) to your car’s top speed by upgrading the battery, even without making any other modifications.  To ensure that you get the right fit, measure your car’s battery compartment and buy a battery of the appropriate size. When it comes to working with high-output batteries, a little boost goes a long way. Start small—if your car came equipped with a single cell battery, move up to a 2-cell or 3-cell. You can then increase the voltage incrementally from there, provided your motor can handle the jump.  If your car feels unusually hot after a session, it may mean that the upgraded battery is placing too much strain on the motor. In this situation, it's safest to just move down a size, since you won't be able to effectively make use of the extra power anyway. Using a battery that’s too powerful for your car could cause permanent damage to to the motor or ESC. Pinch the connectors at the end of the colored wires and slide them out of the ports. Take out the battery and set it aside. You can put it into storage as a backup power source, or toss it out to free up room in your tool kit for superior packs.  If you decide to keep your old battery, perform a before-and-after test run alongside the new one. You’ll most likely be surprised by the difference the sleeker, higher-output battery makes. Make sure you take your old batteries to the proper waste disposal or recycling site when it's time to get rid of them. Never throw rechargeable batteries in the trash. Insert the battery carefully, matching up the wires according to color. Slide the connectors into the ports until they click. Replace the battery cover, if your model has one, then switch the car on and take it for a spin. Test the battery’s fit to make sure there are no loose connections or unnecessary movement in the pack itself. It’s important to be systematic about replenishing the cells in your new battery in order to keep it performing at its best. After every few hours of use, plug the battery pack into a dedicated charging unit and give it some juice. It’s also a good idea to charge batteries after they’ve been exposed to colder temperatures or have been in storage for a while.  Make sure your RC car’s battery is fully charged before you take it out for a practice session or race.  If possible, pick up an extra battery or two so you’ll always have a spare on hand.