Snap-on's CTMS8850 Memory Saver Adapter is a battery-powered tool designed for use in car garages and workshops. It is compatible with 18.0V Snap-on batteries and is ideal for saving vehicle memory during battery replacement. Comes with wall charger only. No personal markings. Item comes just as pictured. If you have any questions please contact me. I usually ship day after payment clears. If you have any issues please contact me before starting a return. My #1 concern is customer satisfaction. Thanks for looking!