1. Check the plug on each battery to see if there is a rusty head, polish it with gauze to make it contact well, and then charge it for a few hours to see how.
2. If the above situation is not possible, when there is no electricity (that is, still can not ride away), pull out the positive and negative wires of each battery for separate testing. In the absence of a professional measurement scale, find a 12V headlight bulb to test, each battery let the bulb light for 1 minute at a glance, will not light the battery is bad, the reason is. The partition connection inside the battery is broken. In the jargon, the battery is disconnected. Such a situation is a quality problem, if it can be replaced within the warranty period.
The reason is that the vehicle charging interface line is virtual. The poor contact of the charging interface line of the vehicle will lead to frequent gun jumping after the charging gun is inserted into the charging interface of the body, and the vehicle cannot be charged normally.
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The maintenance technician will power off the vehicle, remove the liner at the front charging interface of the vehicle, and check whether the charging interface line is damaged and whether the line interface is loose.
Check whether the battery fuse is damaged, and if there is an air switch, it should be closed (channel) when charging, otherwise it will not be charged.
Plug and socket contact caused by bad, to repair.