I have an old VistaLite Light Kit that needs a new battery. Do you think one of the new Vistalite Nightstick batteries would work? My kit has both a 6w and 10w battery and is used for hour and a half road rides.
find the voltage and the amphours rating on your old batt.
goto http://www.atbatt.com/ if the other does not work,
i replaced an old batt. for my light all is good, you might have to modify your plug for your light and charging system