PS4 4 Bank Battery Charger with 3 Bank B.O.S.
This kit includes Dual Pro’s B.O.S. Battery Optimization System - 12V - 3-Bank (PN: BOS12V3) and Dual Pro’s Professional Series Battery Charger - 60A - 4-15A-Banks - 12V-48V (PN: PS4).
B.O.S. (Battery Optimization System) - 12V - 3-Bank
B.O.S. actively shuttles energy between batteries to keep “the pack” balanced, increasing battery strength and longevity.
Batteries in a pack will become “out of balance” and the pack is only as good as its “weakest link”. In watercraft applications, this is further compounded when the trolling motor battery is used for peripherals and/or to assist the cranking battery.
B.O.S. actively shuttles energy as needed between batteries wired in series to ensure equal voltage before, during, and after charging.
B.O.S. keeps packs balanced, enabling maximum performance, and quadruple run time on the water.
Premature battery failure due to an unbalanced pack has been, unfortunately, accepted as the ‘norm’ for decades. The B.O.S. answers this call with a BSAP-24 algorithm that can accurately predict and select the battery that needs additional energy to match the other batteries within the pack. This simultaneously and successfully extends the life of each battery in the pack, as well as increasing run times.
Features:
Available in 6V, 8V, and 12V configuration
Up to six batteries in a series
Battery Selection and Prediction (BSAP-24) algorithm
Less than 1mA sleep mode
Transfer rate up to 7.5A
Self-powered
Any type of battery chemistry
Used in Any Application Where Batteries Are in Series:
Marine
Golf
Industrial
Aerial Equipment
Solar Power
Electrical Vehicles
Communications
Defense/Military
Professional Series Battery Charger - 60A - 4-15A-Banks - 12V-48V
The Professional Series chargers have set the standard in the marine industry for more than a decade. They are known as the safest, most reliable, and best-performing battery chargers in the industry. Across a broad range of fishing and recreational boats, Pro Charging Systems keeps boaters on the water longer while extending the life of their batteries. 
Dual ProTM charging technology has been and continues to be the choice of over 50 boat manufacturers and professional fishermen on the B.A.S.S. and FLW tournament circuit.
Battery Charging System Designed for Use On Land and in Fresh and Salt Water:
The “Green” Charger: Totally “Repairable” Not a Throw-Away
Unmatched Performance, Reliability, Safety and Quality
TROUBLE FREE – Just Plug It In and Forget It!
Join Over 750,000 of Dual Pro's Satisfied Customers!
Fully Automatic and Waterproof
Features:
Approved for Wet Cell and AGM batteries
Models also available for Gelled Electrolyte batteries
Designed for use in fresh and saltwater
DeltaVolt® Intuitive Charging Technology
Waterproof, dependable, rugged construction
Independent outputs
Fully automatic/multi-stage charging
Zero spark technology
Battery maintenance mode
On-board diagnostic codes
Temperature-compensated
Advanced microprocessor controlled
Battery systems available: 12V – 48V
LED lights indicate the state of charge
Reverse polarity protected
No installation restrictions
FCC Parts A & B interference-compliant
DC charge cables = 5' AC power cord = 3'
Approved and meets ISO 8846 Marine standards
Ignition protected (US Coast Guard 33 CFR 183.410
May Be Used in Many Types of Sporting Applications Including:
Inland Watercraft
Salt Water Watercraft
Motorcycles
Golf Carts
Utility Vehicles