SKU: 5689363289

Dual Pro SS4 4 Bank Battery Charger w/3 Bank B.O.S. [SS4/BOS12V3]

Sale price$395.78 Regular price$439.75
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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

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Description

Dual Pro SS4 4 Bank Battery Charger w/3 Bank B.O.S. [SS4/BOS12V3]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: 5689363289

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4.7 ★★★★★
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Martin M. Bodek
Carnegie, US
★★★★★ 1
A Total Sham-dy
What in the hell was this lunatic yammering about for all those 650 pages? What is the deal with his obession with noses, penises, and hobby-horses, hobby-horses, hobby-horses? Why does anyone consider it amusing when a writer keeps telling you he's going to get somewhere, but never does? Why is it entertaining at all to have blank chapters? Why is that cute? Why is that interesting? Who finds this funny? Who finds anything funny here at all? Why does this book of endless, mindless prattle, blabber, and piffle tickle anyone at all? Who finds digression to be enjoyable in literature? You? Why? Why? Tell me! I checked the ratings on Goodreads. This is what it showed: 5 stars: 33%, 4901 4 stars: 28%, 4064 3 stars: 22%, 3268 2 stars: 9%, 1414 1 star: 5%, 848 Meaning: 95% of these readers are flock-following, digression-loving, hobby-horse riding loonies who have swallowed the Kool-aid. There is nothing here but vacuous thundergunk. Pure, putrid unenertaining garbage. If I would have laughed once - just once - during the reading of this book, I would have given it a whole extra star, but it couldn't even do that. I give him one star for spelling Tristram's name right, and even then, it's a made-up name anyway, so I may have been hoodwinked as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 19, 2016
M
Verified Purchase
Michael Harold
Lexington, US
★★★★★ 5
Laurence Stern is still one of the most creative writers ever
This review is not about the words and images inside the book. This is about the fact that, when I removed the book from its packaging, the book's cover had too many creases and bends in it, both front and back, for my taste. Although I do think that Laurence Sterne might have smiled at my response, I don't think the creases were a type of samizdat (think Alexander Solzhenitsyn) added by a disgruntled/creative employee at Amazon. If this doesn't make any sense to you, or seems to be a silly mountain out of a molehill compliant, you will love the book.
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Reviewed in the United States on February 21, 2025
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Verified Purchase
J. Edgar
San Leandro, US
★★★★★ 5
A Few Thoughts on Tristram Shandy by Laurence Sterne
Shandy is an amazing book. More than anything it made me think of a late 1990s vibe with Seinfeld and David Foster Wallace. I can imagine the discourse that must have grown up around it. It I about memory and storytelling but also about nothing but also childbirth and siege warfare. I’m glad I read it; it was worth it even if it took a while.
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Reviewed in the United States on May 14, 2023
J
Verified Purchase
Jennine Light
Battle Creek, US
★★★★★ 5
Good quality no sensitivity like some other brands !
Whitens my teeth very well .
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Reviewed in the United States on May 26, 2026
J
Verified Purchase
Jordan Akana
Pawtucket, US
★★★★★ 5
Super white smile!
If you are looking to whiten and brighten your smile look no further. These are the best whitening strips on the market that do not require you to see a dentist. My teeth are so white and bright. I have sensitive teeth and these don’t seem to bother them either with recommended use. Highly recommend to everyone.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026

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