Yes, you can move a car in neutral without a battery, but it is a limited and potentially hazardous maneuver. The core mechanical connection between the wheels and the transmission is physically disconnected when the gear selector is in Neutral. This allows the vehicle to roll freely if pushed on a slope or by external force, as it doesn't require electrical power to disengage the gears. However, the absence of battery power severely impacts critical vehicle systems.
The most significant limitation is the loss of power steering. Without the electric or hydraulic pump (which often requires engine power), turning the steering wheel becomes extremely difficult, especially at low speeds. More critically, you will lose power brakes. After one or two brake applications, the brake booster's vacuum reserve depletes, and the pedal becomes very hard to press, drastically increasing stopping distance. The car's lights, including brake lights and turn signals, will also be inoperative, making the maneuver dangerous, especially on public roads.
This technique is generally only practical for short-distance, controlled scenarios, such as pushing a car into a parking spot or a garage on a level surface. It is not a substitute for proper towing or a functioning battery. The safety risks, particularly the compromised braking, make it unsuitable for any situation involving traffic or slopes.
