SKU: 93586547424

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

Sale price$410.40 Regular price$456.00
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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For Your Every Summer RSVP, with Code: SUMMER15

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: 93586547424

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4.1 ★★★★★
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Verified Purchase
Lauren
Birmingham, US
★★★★★ 5
The best for sensitive skin and sensitive noses
Style: SPF 50, Size: 5 Fl Oz (Pack of 1)
This is the absolute best sunscreen I have found for my super reactive sensitive skin. I have never had any issues with this sunscreen and it prevents sunburn well. I am also super sensitive to smells and this doesn’t smell like anything to me. It gives a really pretty glow to your skin as an added bonus.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
N
Verified Purchase
Nancy M.
Boise, US
★★★★★ 5
Don't leave home without it!
Style: SPF 50, Size: 10 Fl Oz (Pack of 1)
This sunscreen has been a lifesaver for me. I'm an avid kayaker, have a very fair complexion and hate wearing hats, so I'd be toast (literally) without this. I'm also now allergic to fragrance and several commonly used preservatives, so to find that this sunscreen has no fragrance and none of the suspect additives was a joy. It goes on lightly, rubs in easily and seems to really hold up protecting my skin for 2-3 hour trips on the lake. I never leave home without it. The only drawback I have is that it's sometimes cumbersome, or difficult to get the top to line up correctly in order to spray it and it can be unwieldy trying to do this with one hand. I haven't found anything better, and really appreciate that it's available and not at an outrageous price either.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
M
Verified Purchase
Mike
Bozeman, US
★★★★★ 1
spray top lids fail after a few uses
Style: SPF 50, Size: 10 Fl Oz (Pack of 1)
This sunscreen is awesome. It stays on for a long time, even when swimming. It has almost no odor, which is great if you don't want to walk around with that summer sun screen smell. The reason I am giving this only one star is because of the canister. The spray top lid is very hard to press, and only works a few times before completely jamming, rendering the product useless. This is a huge problem if you are taking it on a river float, or camping where you can't just run out to the store and get another one if it stops working. I love this sunscreen and I really wish I could make it my summer go to, but have had so many of the lids malfunction that I will never buy this product again. It is expensive for sunscreen. They should figure out their packaging.
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Reviewed in the United States on August 2, 2025
T
Verified Purchase
T
Natrona Heights, US
★★★★★ 5
a fave
Style: SPF 50, Size: 5 Fl Oz (Pack of 1)
Disappears into skin quickly, feels like nothing, looks like nothing (no white residue, streaks or discoloration). The fragrance free truly is. I reapply after a couple of hours or prolonged time in salt water even though I don't _feel_ like I need to (I'm not naturally pale) and have not had any burns since I started using Alba products, whereas before, I got occasional burns even from the better, former favorite, brands. I love this brand and the products are prominent on my subscribe and save lists. Once in a blue moon, the spray lid sticks and the can goes in the trash. BUT this happens once in a blue moon with just about every brand I've tried.
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Reviewed in the United States on July 6, 2023
A
Verified Purchase
Amanda G
West Palm Beach, US
★★★★★ 4
Great, when the can works
Style: SPF 50, Size: 5 Fl Oz (Pack of 1)
This is the only sunscreen I buy anymore. Clear, easy to use and no significant smell. Plus air powered spray and biodegradable. No of which matters, though, when the can won't spray at all or just gives a weak spray that leaves sunscreen in wet spots or no coverage on your arms. Too expensive to not work.
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Reviewed in the United States on June 8, 2023

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