SKU: 82960832740

Dual Pro SS4 4 Bank Battery Charger w/2 Bank B.O.S.

Sale price$496.79 Regular price$551.99
Save 10%

Pay in installments of $138.00 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Dual Pro SS4 4 Bank Battery Charger w/2 Bank B.O.S.SS4 4 Bank Battery Charger with 2 Bank B. O. S. This kit includes Dual Pros B. O. S. Battery Optimization System 12V 2 Bank (PN: BOS12V2) and Dual Pros Sportsman Series Battery Charger 40A 4 10A Banks 12V 48V (PN: SS4). B. O. S. Battery Optimization System 12V 2 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

SS4 4 Bank Battery Charger with 2 Bank B.O.S.

This kit includes Dual Pro’s B.O.S. Battery Optimization System - 12V - 2-Bank (PN: BOS12V2) and Dual Pro’s Sportsman Series Battery Charger - 40A - 4-10A-Banks - 12V-48V (PN: SS4).

B.O.S. Battery Optimization System - 12V - 2-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: 25.8 lbs

Quick Guide (pdf)
Owner's Manual (pdf)
Brochure (pdf)
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: 82960832740

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 30 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Mello99
Belleville, US
★★★★★ 5
Slim and Sleek
Size: Small, Color: Black, Size: Small, Color: Black
This slim fit suit was awesome and great. My son loved it and it went perfectly well with my daughter's dress. The perfect way to twin. If anything my son is 5'3 120 lbs and the pants and coat fit a bit long and just took it to a seamstress to get it better fitted for him. Other than that for the price, value, comfort, and look I highly recommend this and so does my son.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
A
Verified Purchase
AT
San Leandro, US
★★★★★ 5
Suited me Well
Size: Small, Color: Black
This 2 Piece Slim Fit Suit Set is hands down the best suit for the price. I bought it for a formal Christmas work party, and it was such a cheap, easy, and quick way to get exactly what I needed — especially since I hate shopping. Honestly, you would never guess I paid as little as I did. It looks sharp, fits great, and feels much more expensive than it is. The color was a true black, which I really appreciated. It looked clean and classic — perfect for a formal event. It did arrive a bit wrinkled from the packaging, so I had to iron it initially. But it was very easy to iron, and once I did, it stayed pretty crisp throughout the night. It didn’t wrinkle much at all while wearing it. It’s also way better than going to a store and paying triple the price. And definitely better than renting — now I actually own it and can wear it again whenever I need it. The fit is perfect if you’re slim. I’m skinny as a rail, and the slim fit worked exactly how I hoped. The jacket isn’t too tight, not too long, and I can move my arms easily without feeling restricted. The whole suit is comfortable and easy to move around in — not stiff like some formalwear can be. It also has handy pockets for your phone and wallet. Overall, you can’t go wrong with this suit. Great price, true black color, comfortable fit, and sharp look. Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 22, 2026
C
Verified Purchase
Cynthia F.
Houston, US
★★★★★ 5
Amazing fit and quality for the price
Size: Medium, Color: Red
Gotta say I was 100% impressed w this suit! And for the price!!?? Nice fabric. Great fit. Great quality. Fit right out of the box! No alterations were even needed. My 14 year old son is 6'2 and around 155lbs. Broad shoulders. Slender build. We ordered the medium and it fit just right. You really cant go wrong w this suit even if you need to get some alterations you cannot beat the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
M
Verified Purchase
matthew tucker
Whiting, US
★★★★★ 4
Quick Delivery & Surprisingly Good Quality
Size: Large, Color: Light Gray, Size: Large, Color: Light Gray
I needed a suit on short notice and didn’t want to spend a fortune, so I took a chance on this gray suit—and I’m really glad I did. For the price, I wasn’t expecting much, but the quality is honestly impressive. The fabric feels solid and looks sharp, not cheap or shiny like other budget suits I’ve seen. Shipping was fast—I received it in just a couple of days, which was perfect for my tight timeline. The fit was nearly spot-on right out of the box. The jacket and pants fit well overall, though the sleeves were a bit long for my arms. If you need a reliable suit fast without spending a lot, this is a solid option. It exceeded my expectations for the cost and turnaround time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 17, 2025
T
Verified Purchase
tyeira
Cuba, US
★★★★★ 5
men slim fit suit
Size: Small, Color: Red
I bought this suit for an 11 year old child for their sneaker ball at school. i order him a size small in men's (he wears a 32 in men pants) this suit fitted him well. the quality of the suit had actually exceeded my expectation. this suit was worth the money and the material. I would definitely order this suit for a young boy for a dance and you don't have to worry about spending a substantial amount of money. the material for the suit was good quality and I washed it in the washer machine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026

recommand products