Solar panels.
Because the alternator keeps the battery charged when the car is running.
Inertia and gravity
Are your Vtech phone batteries not staying charged as long as they used to? You may need to eventually think about replacing them. If you have a cordless phone that keeps needing to be returned to the charger after twenty minutes or so of talking, this can be a major inconvenience.
gravitational force
Keeps Your hands to Yourself was by the Georgia Satellites
Change the batteries in your wireless controller.
The separation of powers balances the branches and keeps any of them from growing too powerful.
Yes; gravity keeps them in orbit in the first place.Yes; gravity keeps them in orbit in the first place.Yes; gravity keeps them in orbit in the first place.Yes; gravity keeps them in orbit in the first place.
Hydration Spheres
it keeps going and going and going and going no thats^ energizer's
No, it just keeps it at 100%.
The alternator does. It is what keeps your battery charged while in use.