A battery is a part of a cup, tank or other container or composite container containing an electrolyte solution and metal electrodes to generate an electric current, and a device that converts chemical energy into electricity. There are positive and negative poles. With the advancement of science and technology, batteries generally refer to small devices that can generate electricity. Such as solar cells. The performance parameters of the battery mainly include electromotive force, capacity, specific energy and resistance.
Using the battery as an energy source, you can get a stable voltage, stable current, long-term stable power supply, little external influence of the current, and the battery has a simple structure, easy to carry, easy to charge and discharge operation, not affected by the external climate and temperature, stable and reliable performance, in all aspects of modern social life play a great role.
Batteries are allowed.
Because now the subway's new trains are equipped with sockets, convenient for passengers to use electronic devices such as charging banks, and according to regulations, batteries with a battery capacity of less than 100Wh can be carried on the subway, but they need to be placed in carry-on hand luggage, and cannot be placed separately.
At the same time, it should be noted that batteries that are damaged, leaking or short circuited cannot be carried. In addition, passengers are advised to use electronic devices cautiously on the subway to ensure their own safety and a good ride experience for others.
Can carry batteries.
Because the subway generally allows passengers to carry mobile power supplies, mobile phone charging banks and other small charging devices, but they need to be placed in hand luggage and carry-on items according to regulations, and need to comply with relevant safety regulations. In addition, subways in some cities also provide charging services to make it more convenient for passengers to use electronic devices. It should be noted that the battery capacity and number cannot exceed the specified limits, otherwise it will be prohibited.
Therefore, before taking the subway, you should understand the relevant regulations, comply with the regulations and keep the battery.
A: Yes.
Lithium batteries with complete and clear identification or devices containing lithium batteries (including but not limited to charging banks, power tools, electric toys, etc.) must meet the following requirements:
① The rated energy of a single product is less than or equal to 100Wh limit band 5;
The rated energy of a single product is greater than 100Wh, less than or equal to 160Wh limit 2; (If the rated energy Wh is not directly marked, it can be calculated according to Wh=V×mAh\/1000)
According to China's urban rail transit industry standards, subway passengers can carry lithium-ion batteries when riding, provided that the following conditions are met:
1. Single battery power does not exceed 100Wh (watt-hour);
2. The batteries carried are limited to batteries used in common portable electronic devices such as mobile phones, laptops, and digital cameras;
3. The battery must be installed in the related equipment;
4. Do not remove the battery in some ways and install it on other devices.
5. For the sake of safety, the subway customer service staff has the right to ask passengers to show the relevant proof of carrying batteries, such as the purchase invoice.
In addition, each metro company may also make corresponding provisions according to local conditions and needs when implementing the specific provisions. Passengers are advised to check the regulations of their local metro company before carrying batteries.