Check the listing for details. CPS CC220 COMPUTE-A-CHARGE Electronic Scale, 220lbs AC REFRIGERANT SCALE W/ Case. Condition: Used. Listed at 150.00 USD. This electronic scale is a must-have for any business or industrial setting. The CPS CC220 COMPUTE-A-CHARGE model is designed for accurate and quick measurements, making it ideal for use in refrigerant scales and meters. With a weight capacity of 220lbs and AC power source, this scale is perfect for determining the weight of your refrigerant load. The scale comes with a durable case for easy transportation and storage. Like new condition!