Sterling Power PCU4815 Pro Charge Ultra 48V 15A Marine Battery Charger

Sterling Power PCU4815 — Pro Charge Ultra 48V / 15A Marine Battery Charger

The Sterling Power PCU4815 is a marine-grade AC battery charger built for 48V systems requiring intelligent shore power charging across up to three battery banks simultaneously. At 15A output on a 48V system — equivalent to 720W — it's a capable unit for 48V house banks on larger vessels, off-grid setups, and any application where 48V has been adopted as the primary house voltage for its efficiency advantages.

The Pro Charge Ultra platform has been refined over years of real-world marine use and won the innovation award at IBEX 2010. 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. A full 4-stage charge profile — bulk, absorption, float, and equalization — is applied automatically, with multiple battery type profiles including support for AGM, gel, flooded lead acid, and lithium. A battery temperature sensor is included for voltage compensation and thermal protection.

The PCU4815 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
• Power Factor Corrected (PFC)
• Includes: battery temperature sensor
• Warranty: 5 years
• Standards: UL1236, ABYC-31
• Optional remote: PCUR (sold separately)