Sterling Power PCU3220plus Pro Charge Ultra Plus 32V 20A Marine Battery Charger

Sterling Power PCU3220plus — Pro Charge Ultra Plus 32V / 20A Marine Battery Charger

The Sterling Power PCU3220plus is a marine-grade AC battery charger built for 32V systems — a voltage common in older traditional sailing vessels, some workboats, and specialized commercial applications. At 20A output it delivers reliable, intelligent shore power charging across up to three battery banks simultaneously, with the full 4-stage charge intelligence of the Pro Charge Ultra Plus platform.

The Pro Charge Ultra Plus is Sterling's second-generation ProCharge platform, recognized by Sailing Today Magazine as the most flexible marine charger on the market. It runs on any global AC power source between 80–270V and uses Power Factor Correction (PFC) technology to reduce input current draw, generate less heat, and minimize electrical noise. Six preset battery type profiles plus two fully user-customizable profiles cover custom absorption voltage, float voltage, and absorption time. Lithium charging profiles are included and fully programmable.

A battery temperature sensor is included and automatically compensates charge voltage for lead acid chemistries and provides high-temperature protection for lithium. The PCU3220plus is conformal coated for salt air and humidity, conforms to the ABYC drip test when mounted correctly, and uses non-ferrous metals throughout. Optional remote control (PCUR) available separately.

Key Specs:

• Output voltage: 32V
• Output current: 20A
• AC input range: 80–270V (global)
• Battery banks: up to 3 simultaneous outputs
• Charge profiles: 6 preset + 2 user-defined (including lithium)
• Power Factor Corrected (PFC)
• Includes: battery temperature sensor
• Warranty: 5 years
• Standards: UL1236, ABYC-31
• Optional remote: PCUR (sold separately)