Charger aging: After a long time of use, the internal components of the charger may be aging or damaged, so that it can not normally output charging voltage and current.
< br >
2, there is a problem with the internal circuit: the internal circuit of the razor has a break point or the internal components may be aging or damaged, so that it can not be charged normally.
< br >
3, rechargeable battery aging: rechargeable battery aging, can not be charged. Many people ignore that the battery itself also has a life, and excessive discharge will also affect the service life of the battery. You can check this item first.
The battery has a self-discharge process for a long time, and when the self-discharge is excessive, the battery voltage is lower than the battery charging voltage, and it cannot be charged.
At this time, the battery protection board can be removed, charged for a while, and then charged with the charger.
Solution: Change the charger, the voltage is higher than 12 volts, and charge with an 18 volt charger, so it is good. Can not be put on hold for a long time in low power
The electric driver 12V lithium battery is not charged, which can be checked from several aspects.
One is to use a multimeter to check whether there is a problem with the charger output, one is to use a multimeter to measure the end voltage of the lithium battery is how much V. If the voltage is lower than about 8V, it indicates that the battery has been scrapped. If there is no problem with either, you need to consider that the charging port is damaged.
The reason is that the battery of the screwdriver causes electrolyte damage. The electric screwdriver cannot be charged because the battery electrolyte of the electric screwdriver is damaged, so it cannot be charged
The reason why the electric screwdriver cannot be charged is: the battery is broken or the charger is damaged.