铁路部门未加码充电宝安检规定，地铁充电宝乘车要求各地有差异

Group 1 - The railway department allows passengers to carry power banks as long as they are clearly marked and do not exceed an energy rating of 100Wh (approximately 27000mAh) [1][2] - There are no additional security checks for power banks, and passengers will not be prohibited from carrying them based on brand or lack of 3C certification [2][4] - Passengers can find more information about carrying items and luggage on the 12306 website and app, and charging facilities are available on trains and at some stations [3] Group 2 - Different cities have varying regulations regarding power banks on subways, with Beijing not having mandatory restrictions [4][5] - In cities like Fuzhou and Hefei, the regulations are similar to those of the railway, allowing power banks with a maximum energy rating of 100Wh and limiting the number of power banks per passenger [4] - Guangzhou subway allows passengers to carry up to 5 power banks, each with a maximum capacity of 20000mAh, while Beijing has been increasing the availability of power bank rental services [5]