Sears told me a 19.2 volt lithium ion battery would replace my 19.2 volt nicad battery...it works great in the drill...but will not go in the nicad charger because of little plastic tits on the inside of the neck of the lithium battery...if I break those plastic tits off it will fit in nicad charger....Can I charge the lithium batt.in nicad charger...my thought it would take a little …