When using facilities, we often see that it is necessary to use matching USB power adapters to charge batteries. We should know that different types of USB power adapters have different charging effects. At present, for example, power adapters are widely used on mobile phones.,This kind of power adapter have many models.
1. Generally, the difference of voltage parameters should not exceed 0.5V.
When using USB power adapter, the voltage parameters and standard parameters are better not to exceed 0.5V. For example, if a battery is charged with 4V input, it can use 4.5V or 3.5V at most. Once the voltage is not within such a standard range, it may lead to the failure of charging. Secondly, even if the charging can proceed normally, it will do harm to the battery. The fundamental reason is that the battery is also a kind of path. If the voltage gathered at both ends of the battery is too large, it will destroy it. The internal structure of the battery.
2. Generally, the difference of current parameters should not exceed 100 ma.
In general, the biggest difference between different power adapters is the charging current. I think the current parameters of the charger should not be more than 100 Ma apart. The effect of current on the battery is immediate, and the fact that the battery can charge is also due to the effect of current. Overcurrent can cause deterioration of chemical elements in batteries. So the battery can't be used.