Sitting high-speed rail can be charged with hot water bags
You said that the charging hot water bag is not in the above 5 kinds of prohibited items, so you can carry.
Motor vehicles and ordinary trains for passengers to carry the same requirements, only the following items can not carry:1, China's laws prohibit or restrict the transport of goods, such as firearms and ammunition, knives, weapons etc..2, the provisions of the rules and regulations of the danger, still items, such as alcohol, fireworks, lighter gas and paint, etc..3, the goods with corrosive or pollution, damage to the train, such as acidic solution, corrosive liquid.4, the weight or volume of goods beyond the scope of the passengers can be free.5, passengers carrying items can not damage public health, such as the issue of odor, odor.
Charging hot water bag is able to bring the car.