PowerMax PMBC-SE ECU Programming Power Supply & Battery Maintainer | 75A, 100A, 120A

The PowerMax PMBC-SE Series is a constant-voltage 12V power supply and battery support unit for automotive dealerships, service centers and shops. It holds output steady while a vehicle’s modules draw current, so an ECU reflash, ADAS calibration or showroom display does not fail on a sagging battery. Available in 75 amp, 100 amp and 120 amp models.

Built for Programming and Service Work

• Fixed-voltage mode – constant 13.0V-16.0V output for module programming and reflash sessions
• Less than 100 mV AC ripple – clean DC power for sensitive vehicle electronics
• 75A, 100A and 120A – size the unit to the vehicles your bays actually see
• Ready to connect – 4 AWG, 15-foot heavy-duty cables included; felt-backed case protects a customer’s finish
• Smart LCD display – real-time voltage and current readout
• U.S.-based technical support and a 2-year limited warranty

Also Used in RV, Marine and Off-Grid Systems

The same adjustable output that makes the PMBC-SE suited to service work also makes it a capable converter and charger for RVs, boats and off-grid installations. Fine-tune voltage for AGM, gel or deep-cycle lead-acid batteries, or run 2-stage and 3-stage smart charging for automatic battery management.

Charging Modes

• Fixed Mode – constant voltage supply for powering sensitive 12V electronics
• 2-Stage Charging – Boost (14.4V) + Float (13.6V) for fast charging and battery maintenance
• 3-Stage Smart Charging – Boost (14.4V) / Normal (13.6V) / Storage (13.2V) for full automatic battery management

Safety and Build

• Built-in overload, short-circuit, reverse polarity protection and current limiting
• Quiet, temperature-controlled cooling fan that runs only when needed
• Compact, mountable and maintenance-free, with no user-serviceable parts

Buying for a dealership or fleet? Request wholesale pricing.

Technical Specifications

• Model: PMBC-75/100/120-SE
• Input: Up to 120VAC (standard household connection)
• Output: 12VDC, adjustable 13.0V–16.0V
• Charging Modes: Fixed, 2-Stage, 3-Stage Smart Charging (factory default)
• LCD Display: Voltage & current readout
• Cooling: Quiet, temperature-controlled fan
• Safety Protection: Overload, short-circuit, reverse polarity, and current limiting
• Included Accessories: 4 AWG, 15’ heavy-duty cables
• Weight: ~8 lbs.
• Warranty: 2-Year Limited Manufacturer’s Warranty