The Dual Pro RS3/BOS12V3 is a complete battery management solution combining a 3-bank, 18-amp RealPRO Series charger with an integrated Battery Optimization System (B.O.S.). This kit includes everything needed to charge and balance up to three 12V batteries in series, maximizing performance and extending battery life in marine, RV, and powersports applications.
Battery Optimization System (B.O.S.) Technology:
The included B.O.S. unit actively shuttles energy between batteries in a series pack to maintain equal voltage levels before, during, and after charging. Batteries connected in series naturally become unbalanced over time—especially when one battery powers accessories or assists starting duties. This imbalance limits the entire pack's performance to its weakest battery and causes premature failure. The B.O.S. uses a proprietary BSAP-24 algorithm to predict which battery needs energy and automatically transfers up to 7.5 amps between batteries, keeping the pack balanced and quadrupling run times while extending battery lifespan.
RealPRO Series RS3 Charger:
The RS3 charger delivers 18 amps total output across three independent 6-amp charging banks for 12V-36V systems. Each bank operates independently with fully automatic charging, maintenance mode, and individual LED indicators showing each battery's charge status. The charger is engineered for everyday recreational use in bass boats, pontoons, runabouts, golf carts, ATVs, and similar applications where reliable, trouble-free charging is essential.
Key Features:
- Three independent 6-amp charging banks with 18-amp total output
- Integrated 3-bank B.O.S. system with 7.5A energy transfer rate
- Compatible with wet cell and AGM battery chemistries
- Universal input: 100-240 VAC, 50/60Hz for worldwide use
- Fully automatic operation with battery maintenance mode
- Waterproof, rugged construction for fresh and saltwater environments
- Reverse polarity protection and ignition protected (USCG 33 CFR 183.410)
- ISO 8846 Marine certified and FCC Part 15 compliant
- B.O.S. operates in less than 1mA sleep mode when not balancing
- Individual LED charge status indicators for each battery
- 5-foot DC charge cables and 3-foot AC power cord included
- Two-year manufacturer warranty
What's Included:
- Dual Pro RS3 3-Bank Battery Charger (18A total, 6A per bank)
- Dual Pro BOS12V3 Battery Optimization System (12V, 3-Bank)
- DC charging cables and AC power cord
Ideal for marine vessels with 24V or 36V trolling motor systems, golf carts, RVs, and any application requiring multiple batteries connected in series. Simply plug in and the system automatically handles charging and balancing—no monitoring required.
