What are the battery issues of new energy vehicles after 8 years?

[SanDakota]

New energy vehicles may experience the following battery issues after 8 years: Battery aging problems: The lifespan of a battery is generally around 3 years. Prolonged use can lead to internal sulfation, insufficient battery capacity causing severe power loss, internal battery grid breakage, electrode short circuits, and other issues. It is recommended to replace the battery promptly. Loose battery connections or charging circuit problems: Further inspection should be conducted to determine if the positive and negative battery connection wires are loose, and whether the charging circuit has aged or short-circuited. Generator malfunctions: Issues such as damaged voltage regulators, burnt-out rectifiers, carbon brushes worn to their limit, or internal short circuits in the stator or rotor coils can cause the generator to stop producing electricity. Replacing the generator is necessary to resolve these problems. Generator belt problems: For instance, a loose belt may result in insufficient rotational speed, causing slippage. Generally, the generator belt should be replaced every 100,000 kilometers or approximately every 3 years. Timely adjustment or replacement of the generator belt is advised.