what happens if battery voltage is too high

The effect of excessive charging voltage on the battery:

1, the charger and rechargeable battery is to match, charging voltage is too large will cause excessive current, the battery will be damaged or even explode.

2, general lithium batteries have a protection board (that is, voltage regulator), to prevent the battery from overcharging and overdischarging, there is a chip control, the battery voltage reaches a certain limit will stop charging.

Charging is divided into two modes: DC charging and AC charging, which can be divided according to the AC/DC installation location. To achieve "fast charging", we need to rely on DC fast charging. The power output from the grid is AC, which needs to be converted to DC before the battery can be charged.

(1) DC charging mode: DC charging pile to complete the conversion task from AC to DC power

(2) AC charging mode: the charger completes the conversion from AC to DC, and the power is still AC when it is delivered to the product.

DC charging mode rectifier conversion efficiency is high, charging speed is faster than AC charging mode. The power and heat dissipation of the rectifier are positively related to its size.

Summarise the voltage is too high belongs to overcharging, overcharging will damage the internal structure of the battery, resulting in reduced capacity or shortened cycle life, but based on the majority of batteries now applying overcharging protection, in a reasonable voltage can be safe charging, voltage is too high it is not recommended to use!