The batteries that power them have also changed over the years. Older cordless Ryobi tools were powered by nickel-cadmium (NiCad) batteries. These types of batteries have been popular for use in ...

This decreases the total crystal surface area, which in turn effectively reduces the cell capacity and increases its internal resistance. Fortunately, nickel crystals in a battery can be re-formed by ...

Because 22-cell nickel-cadmium/nickel-metal-hydride (NiCd/NiMH) batteries are ubiquitous, the need for a compatible battery charger that is inexpensive and simple to ...