Midtronics | PSC-550S | PSC-550S Power Supply Charger / Maintainer

Specifications

The Midtronics PSC-550S is a professional-grade power supply charger and maintainer designed for automotive applications. It delivers a maximum output of 55 amps at a regulated voltage, providing precise control for sensitive vehicle electronics. The unit features an output voltage of approximately 13.4 V (DC) at full load, with a tight voltage tolerance of ±0.7% at no load. Ripple and noise are kept below 50 mV rms, ensuring a clean and stable power source. It operates within a working temperature range of 0-40°C and includes an internal breaker for fuse protection. The PSC-550S weighs 7.95 lbs. Dimensions are 0 x 0 x 0 inches.

Key Features

The PSC-550S incorporates an advanced switch-mode design, offering a cleaner and more reliable power source compared to standard chargers. Its fully regulated DC output prevents battery overcharging and maintains the necessary battery voltage during complex service procedures and reflashing. This unit includes multiple protection features to ensure long-term reliability and safety, such as reverse battery polarity protection via replaceable fuses, brownout input protection, over-current protection with cycle-by-cycle peak limiting, and over-temperature protection. A unique proportional fan control circuit adjusts fan speed based on the internal ambient temperature, minimizing operational noise. High-quality, detachable cables are included for convenient field service.

Applications

The Midtronics PSC-550S is engineered for diverse automotive service environments. It is ideal for maintaining battery state-of-charge during critical vehicle tasks such as ECU reprogramming, complex diagnostics, and software reflashing, where a stable voltage is paramount. Technicians also utilize this unit for charging voltage-depressed 12-volt lead-acid batteries. Furthermore, it functions effectively as a power supply for showroom demonstrations, preventing battery drain from continuous use and accessory loads. Once a battery is fully charged, the PSC-550S can sustain accessory loads or offset parasitic drains, acting as a regulated power supply.

Benefits

This power supply charger delivers stable and reliable power, which prevents unexpected battery drain during intricate vehicle services. By maintaining precise voltage control, the PSC-550S safeguards sensitive vehicle electronics from potential damage during diagnostic and programming operations. Its advanced regulation capabilities actively prevent battery overcharging while sustaining optimal battery voltage, thereby extending battery life. The robust commercial-grade design with heavy-duty internal components ensures years of continuous, trouble-free operation, offering a durable solution for professional workshops. The portable design and high-quality, detachable cables enhance ease of service and transport.