Sterling Power PCU4815plus Pro Charge Ultra Plus 48V 15A Marine Battery Charger

Sterling Power PCU4815plus — Pro Charge Ultra Plus 48V / 15A Marine Battery Charger

The Sterling Power PCU4815plus is a marine-grade AC battery charger built for 48V systems, combining the output of the PCU4815 with the enhanced features of Sterling's second-generation Pro Charge Ultra Plus platform. At 15A output on a 48V system — equivalent to 720W — it delivers intelligent, fully programmable shore power charging across up to three battery banks, with lithium profile support that makes it a natural fit for modern 48V LiFePO4 installations.

The Pro Charge Ultra Plus 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 — critical for 48V lithium systems where charge voltage precision directly affects battery longevity. A battery temperature sensor is included for voltage compensation and thermal protection.

The PCU4815plus 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: 48V
• Output current: 15A
• 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)