SKU: 83041060245

Dual Pro SS4 4 Bank Battery Charger w/3 Bank B.O.S.

Sale price$496.79 Regular price$551.99
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Description

Dual Pro SS4 4 Bank Battery Charger w/3 Bank B.O.S.SS4 4 Bank Battery Charger with 3 Bank B. O. S. This kit includes Dual Pros B. O. S. (Battery Optimization System) 12V 3 Bank (PN: BOS12V3) and Dual Pros Sportsman Series Battery Charger 40A 4 10A Banks 12V 48V (PN: SS4). 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

SS4 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 Sportsman Series Battery Charger - 40A - 4-10A-Banks - 12V-48V (PN: SS4).

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

Sportsman Series Battery Charger - 40A - 4-10A-Banks - 12V-48V

Dual Pro’s customers asked for a series of chargers that were smaller, lighter, and economically affordable. The Sportsman Series of chargers answers these needs. This line of chargers is designed for all types of battery applications. Sportsman chargers have all the safety and reliability features that have made PRO Charging Systems chargers the #1 choice of most boat manufacturers, dealers, and over 750,000 customers across the country. Advanced microprocessors and LED readings make the units even easier to use.

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

Specifications:

  • Charger Input - Voltage: 120v
  • Charger Output - Amps: 40a
  • Charger Output Voltage: 12/24/36/48v
  • Charging Banks: 4
  • Portable: No
  • Box Dimensions: 3"H x 6"W x 9"L WT: 25.9 lbs
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 83041060245

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Lex Oliver
Lexington, US
★★★★★ 4
Solid sneakers—worth it on a good discount
Size: 9, Color: Vintage Indigo Canvas/Natural
These sneakers are solid overall. They look good and feel comfortable for everyday use, and the quality is what I’d expect from the brand. One thing to note: if you have to walk a lot, they can start to feel less comfortable on the top of the foot (upper area). It’s not a dealbreaker, but you’ll notice it on longer days. That said, they’re definitely worth it if you catch a really good discount.
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Reviewed in the United States on February 12, 2026
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thomas w. smith
Grantham, US
★★★★★ 5
Quality sneaker.
Size: 12, Color: Ivory/Natural
Good looking sneaker. I wear a 12, these seem to run large.
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Reviewed in the United States on April 21, 2026
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The Dude
West Palm Beach, US
★★★★★ 5
Highly recommended
Size: 11, Color: Stormcloud Canvas/Sleet
I get a lot of compliments on these shoes. They're extremely comfortable and very stylish. You can wear them with khakis or shorts. They pair with them perfectly highly recommended
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Reviewed in the United States on April 18, 2026
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Alex G
Fort Morgan, US
★★★★★ 3
Comfy but ouch!
Size: 11, Color: Stormcloud Canvas/Sleet, Size: 11, Color: Stormcloud Canvas/Sleet
Nice style that keeps its shape, comfy insoles, true to size. I got the grey color at size 11. However the back part of the shoe ripped into my skin. I had to wear band aides after the first day of walking during our vacation. So wear sock that cover the back ankle. Otherwise, I like these shoes.
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Reviewed in the United States on April 14, 2026
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Nick G
Lexington, US
★★★★★ 5
Great shoes
Size: 9.5 Wide, Color: Optic White Canvas
These are great shoes, but you have to be careful with them since they are canvas they can get ruined easily.
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Reviewed in the United States on April 18, 2026

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