The Dual Pro SS4 Battery Charger is a rugged, marine-grade charging solution built for serious boaters. Four independent 10-amp banks deliver a total of 40 amps of charging power, ensuring fast, safe restoration of multiple batteries at once. Approved for Wet Cell and AGM batteries, with gelled electrolyte models also available, the SS4 is designed for use in both fresh and saltwater environments. Its waterproof construction and independent outputs keep each battery bank charging efficiently without cross-interference, even in demanding marine conditions.

• Four independent 10 Amp banks for simultaneous charging with a combined output of 40 Amps
• Battery systems 12V–48V compatibility to cover a wide range of vessels and setups
• Independent outputs ensure safe, balanced charging for each bank
• Fully automatic / multi-stage charging with temperature compensation for optimal performance
• Zero spark technology for safe connections and installer-friendly operation
• Battery maintenance mode to keep batteries topped off without overcharging
• On-board diagnostic codes provide quick troubleshooting insights
• Advanced microprocessor control delivers precise, reliable charging profiles
• Reverse polarity protection adds an extra layer of safety
• Waterproof / ISO 8846 Marine standards construction for harsh marine environments
• Ignition protected per US Coast Guard 33 CFR 183.410
• FCC Part 15 interference compliant for broad compatibility
• No installation restrictions simplify mounting and setup
• Cord lengths DC charge cables 5 ft; AC power cord 3 ft
• Compact, rugged design per unit: 4.75"H x 8.00"W x 14.25"L, weight 22.2 lbs
• Sportsman Series lineage — trusted by boat manufacturers, dealers and over 750,000 customers nationwide

Designed for use in both fresh and saltwater and engineered to withstand demanding marine conditions, the Dual Pro SS4 brings reliable, multi-bank charging to your boat with advanced safety features and easy operation. It’s the intelligent choice for maintaining a ready-to-go electrical system on any vessel.

• Model: SS4
• Description: Four 10 Amp Banks
• Total Output: 40 Amps
• Size Per Unit: 4.75"H x 8.00"W x 14.25"L
• Weight Per Unit: 22.2 lbs
• Battery System: 12V - 48V
• Reverse Polarity: Yes
• Temp. Control: Yes
• Indep. Outputs: Yes
• Quick Logic: Yes

Upgrade your marine charging setup with the Dual Pro SS4 Battery Charger and enjoy safer, smarter, and more reliable charging across all your battery banks.