There is certainly no problem using them as their voltages are the same.
But pay attention to the load. The capacity of nickel-metal hydride batteries is generally more than twice that of nickel-cadmium batteries, and the charging time should be twice as long.
But the key is knowing what your shaver's charging circuit is. If it is fast charging and stops automatically, it may not work because the fast charging circuit in nickel-cadmium batteries senses the voltage drop after charging. The battery is fully charged and stops charging. However, if the nickel metal hydride battery is fully charged and there is no voltage drop, charging will continue and the battery will be damaged.
It would be easier if it was a normal regular charge, just double the charge time
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< p>Don't tell melow that it certainly won't work. There are many types of battery charging circuits. What if the current is constant for a few hours and it doesn't work? Is it possible to extend the charging time?===========================
Ah, that will be easy
< p>This is the simplest balanced current charging. Look at the milliamp hours of the old battery, then look at the milliamp hours of the new nickel-metal hydride battery. Just add the charging time proportionally.For example, if the original nickel cadmium is 700 mah, if the newly purchased nickel metal hydride is 1400 mah, the charging time should not exceed 16 hours, s It is 2100 mah, the charging time should not exceed 24 hours. , And so on. Of course, for insurance reasons, the time can be shortened appropriately to avoid overrun. The bigger thanyou can buy currently is 2500mah.
Can nickel cadmium chargers charge lithium batteries? 50 points added if satisfied
No.
1. The voltage of the nickel-cadmium battery is 1.2 V or more. 2. The lithium battery is 3.7V, the voltage difference is too large. This will damage the nickel-cadmium battery.
If the voltage difference is too large, the charger may fail to produce or charge, which will also affect the battery life.
Nickel-cadmium chargers cannot charge lithium batteries. In fact, the solvent for the lithium battery electrolyte is an organic solvent. Excessive voltage will produce secondary reactions inside the cell phone. the chargers will also be marked with the charging limit voltage of 4.2V. The process of charging lithium batteries is also different from othersbatteries. First, constant current charging to 4.2V (take mobile phone batteries as an example), and then constant voltage to 4.2V to fully charge the lithium battery. Only battery chargers are so complicated. When you talk about the battery label, are you talking about the entire battery case or the individual cells inside? I assume it's on the case. When you open the case, you will find a single battery inside, which is usually indicated by its capacity. Note that this capacity must be multiplied by the number of batteries to determine the capacity of the entire battery.