2.5 - 3.5 hours on most v8s. The larger the engine the more time. 1.5 - 2.0 hours on 4 and smaller 6 litre engines. Ie. A 3.3 litre on a Dodge minivan needs approximately 2.5-3 hours. This is approximate, plugging your car overnight is the way to go. If your after saving some energy then 4 hours will cut for most cars.
How long it takes a car heater to warm up depends on the temperature outside. In cold weather the heater can take several minutes to warm up.
First of all, the "block heater" is actually an oil or coolant warmer. It will heat the engine oil or engine coolant depending on location installed, and works similarly to an electric water heater. The rate and maximum temperature that the heating element reaches depends on manufacturer. Circulation of the fluid it heats also plays into how long it will take to warm the engine. In general, the larger the motor, the longer it will take to warm and the more power it will require to stay warm. A 7.3L engine will have a higher volume of coolant to heat where as a 5.9L engine.
block heaters are kinda hard to install. you would have to drain your coolant and take out one of the freeze plugs. that's were the block heater gets put in to warm the coolant in the block.
It is used in extremely cold climates to aid in starting. The block heater keeps the fluids warm for a much faster start.
there is no block heater plug block heaters are mainly used on diesel applications during the winter to help keep the block warm and makes it a whole lot easier to start
You can get a heater that magnetically sticks to the pan and warms the engine. You can get a heater that connects to the heater hose and circulates warm engine coolant. You can also get a block heater that replaces a freeze plug. You have to decide which works best for you.
A vehicle block heater's main purpose is to warm an engine enough to increase the car's starting speed. This is especially useful in winter to get a car started.
A typical block heater for a car engine would be around 400-1500 watts, depending on the size and efficiency of the heater. This kind of heater is used to keep the engine warm in cold weather for easier start-ups.
Tank water will slowly warm to ambient temperature. It will not get any hotter.
If you are plugging in a battery charger connected to the battery, yes it will charge the battery. If you are referring to plugging in the block heater, then NO it will not charge the battery it will only warm the oil in the engine block. If you are referring to plugging in a battery heater then NO it will not charge the battery and will only keep it warm.
It is just heating elements that wrap the engine and when pluged in it keeps the block warm as well as the oil and water
I had one of these when I lived in Wyoming. A freeze plug in your engine block is replaced with a heater plug that keeps the block warm so your fluids don't freeze. There is what looks like an extension cord you use to plug the block heater into an outlet. I had a 25 foot cord I ran from my bedroom window to the plug hanging under my truck parked outside my apartment.