although the voltage is important the milliamperage (mAh) is the factor to be carefull of. some ni-cads at dickies give 1200 mAh and that is a problem if your still powering your bits on single ni-cad (standard) batteries UNLESS you used energiz%r max or ultra d%racells on the first charge. some thing about cell memory and limitations. the % batteries run at 800mAh supposedly.
