Sterling Power PCU3620 Pro Charge Ultra 36V 20A Marine Battery Charger

Sterling Power PCU3620 — Pro Charge Ultra 36V / 20A Marine Battery Charger

The Sterling Power PCU3620 is a marine-grade AC battery charger built for 36V systems — found primarily in electric trolling motor setups, some older marine applications, and specialized industrial installations. At 20A output it delivers reliable, intelligent shore power charging across up to three battery banks simultaneously, with the proven 4-stage charge intelligence of the Pro Charge Ultra platform.

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 AGM, gel, flooded lead acid, and lithium. A battery temperature sensor is included for voltage compensation and thermal protection.

The PCU3620 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: 36V
• Output current: 20A
• 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)