... tare weight ,100 cargo ID, 512 weighing records 2.AC/DC power supply indicator for truck scale High precision A/D ... for battery volume or status; Protection for low battery; AC/DC power supply, with outside rechargeable 12V/7AH battery; Compensation calibration ... : LED ( 7digit,H=0.8inch); Power source : AC110/220V (adapter: DC 12V 7AH);Savee 255 vehicle ID and corresponding tare weight ...