Comparative analysis on nicd vs nimh battery - is there a better choice-Tycorun Batteries
Nickel–cadmium battery - Wikipedia
NiCad vs Lithium Ion: Which is battery better for cordless tools
Choosing and Using Nickel-Metal-Hydride (NiMH) Rechargeable Batteries
Lithium Battery Charger for Black & Decker, 9.6V-18V Compatible with NiCad & NiMh Battery HPB12 FS12B HPB14 FSB14 HPB18 HPB18-OPE FSB18 HPB96 FSB96 - Walmart.com
Bosch 18v Battery
Battery Charger for Dewalt and ELU Power Tool Ni-Cd Ni-Mh Batteries 7.2-18 Volts | eBay
AA 1.2V 800mAh NiCd Rechargeable Button Top Assembly Cell Battery for high power static applications (Telecoms, UPS and Smart grid), Data Meters, meters, radios, RC devices, electric tools