The BK Precision 1689 high current DC power supply is designed for continuous duty and is ideal for substituting car batteries, servicing/demonstrating high power car stereos, cellular phone products, camcorders, and ham radios. Hobbyists, retailers, and service shops use car batteries to power mobile equipment. Car batteries are heavy, leak acid, spark, cannot tolerate shorted outputs, and must be recharged.

This power supply provides its maximum current output continuously hour after hour without overheating.