Ni-Cd and Ni-MH batteries have different characteristics, and using Ni-MH batteries in place of Ni-Cd batteries can lead to several issues:
Charging: Ni-Cd and Ni-MH batteries have different charging profiles. Ni-Cd batteries require a higher charging voltage and a different charging algorithm compared to Ni-MH batteries. Using a charger designed for Ni-Cd batteries to charge Ni-MH batteries can lead to overcharging and potential damage to the Ni-MH batteries.
Capacity: Ni-MH batteries typically have a higher capacity than Ni-Cd batteries of the same size. While replacing Ni-Cd batteries with higher capacity Ni-MH batteries may seem like an improvement, it can lead to problems with the solar light's charging and operation. The solar light may not be able to charge the Ni-MH batteries fully during the daytime, and the longer discharge time of Ni-MH batteries may cause the solar light to run out of power more quickly at night.
Performance: Ni-Cd and Ni-MH batteries have different voltage curves. Ni-Cd batteries maintain a relatively constant voltage during discharge, while Ni-MH batteries experience a voltage drop as they discharge. This difference in voltage characteristics can affect the performance of the solar light, potentially causing flickering or dimming of the light output.
It's important to use the type of battery specified by the manufacturer of the solar light. If you have concerns about the compatibility of the replacement batteries, it's best to consult with the salesperson or the solar light manufacturer to ensure that the Ni-MH 2650 batteries are suitable for use in your solar lights.
