Not all public charging stations support the connector types or charging modes compatible with the BMW i5, so not all publicly available charging stations have the right charger for all vehicles. This fact explains part of the problem of the BMW i5 not charging at some public charging stations, regardless of the current type (AC or DC). The session at some stations may also be prevented by tecnologic issues resulting from a lack of vehicle software or app updates. The charging stations are managed by different companies, and it often happens that some providers release updates before others. A first check is the name of the company managing the energy supplied by the charging stations to determine if the problem is occurring cyclically. However, you can test the charging at other stations in the same energy network or even at other energy providers to get a more complete picture. If the service works properly at other providers, the problem may be related to the previous brand. The functioning of public wallboxes also depends on any subscriptions you have: if your BMW i5 isn't charging, make sure you don't require a subscription or specific authentication; without them, the charging session won't start. Furthermore, some stations require a connection to a specific app, and if you don't have it on your smartphone, you may have figured out the cause of the charging failure. The type of plug shouldn't be overlooked: some may have slightly different shapes, preventing a perfect connection between the plug and socket, thus compromising charging. As you can see, there are multiple probable causes that could prevent your BMW i5 from charging at some public charging stations.