Upgrading from Ni-Cad to Ni-MH Batteries
We are often asked if it is safe to replace the original Ni-Cd batteries (also labeled Ni-Cad or NiCd ) with a newer higher capacity Ni-MH (also labeled NiMH) type as an upgrade, when the battery of the device is empty for users or when it is time to upgrade the electrical products manufactured for the factory. Take emergency lights for example: Emergency lights that used to have nickel-cadmium batteries generally had a longer lifespan. And NiMH batteries of the same physical size have 2 to 4 times the charge capacity of older NiCd batteries. The official recommendation is to use only the same type of battery as the replacement. This is the safest way to ensure that the batteries are properly charged. Of course, theoretically, if the voltage of the NiMH battery and NiCd battery is the same, it can be exchanged. Nickel-cadmium batteries are characterized by low price, high-temperature resistance, and high current discharge, the disadvantages are l...