SKU: 3219687597

Dual Pro RS4 4 Bank Battery Charger w/3 Bank B.O.S. [RS4/BOS12V3]

Sale price$231.75 Regular price$257.50
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Ships within 48 hours · Estimated delivery Sep 16 - Sep 21

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Description

Dual Pro RS4 4 Bank Battery Charger w/3 Bank B.O.S. [RS4/BOS12V3]RS4 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 RealPRO Series Battery Charger 24A 4 Bank (PN: RS4). 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

RS4 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 RealPRO Series Battery Charger - 24A - 4-Bank (PN: RS4).

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

RealPRO Series Battery Charger - 24A - 4-Bank

RealPro Series battery chargers (formerly Recreation Series) are an affordable, reliable, and safe battery charging system designed for everyday use. The system is engineered for users who need a charging system on an occasional basis and may not want or need the capabilities of a heavier-duty and higher-amperage product.

It is designed for use in many types of applications, including bass boats, runabouts, pontoon boats, other watercraft, automobiles, ATVs, golf carts, and other similar uses. The system delivers sophisticated capabilities and superior value to customers.

Battery Charging Systems Designed for Everyday Applications:

  • Affordable, reliable, and safe
  • Unmatched performance, reliability, safety, and quality
  • TROUBLE FREE – Just Plug It In and Forget It!
  • Join Over 750,000 satisfied customers!
  • Wide variety of applications
  • Universal input (100-240 VAC 50/60HZ)

Features:

  • 4 bank battery charger 
  • Approved for wet cell and absorbed glass mat (AGM) batteries
  • Designed for use in fresh and saltwater
  • Dependable, rugged construction, and waterproof
  • Independent outputs and fully automatic
  • Battery maintenance mode
  • Two-year warranty
  • DC charge cables = 5ft and AC power cord = 3ft
  • Approved and meets ISO 8846 marine standards
  • LED lights indicate "Each Battery’s" state of charge
  • Reverse polarity protection and no installation restrictions
  • Ignition protected (US Coast Guard 33 CFR 183.410)
  • FCC 15 Parts A and B Interference Compliant

May Be Used in Many Types of Sporting applications, Including:

  • Bass Boats
  • Runabouts
  • Pontoons
  • Automobiles
  • ATVs
  • Golf Carts

Specifications:

  • Charging Banks: 4
  • Portable: No
  • Box Dimensions: 3"H x 6"W x 9"L WT: 11.65 lbs

Quick Guide (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: 3219687597

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TheWalkin
Louisville, US
★★★★★ 4
Better cologne type deodorant that's not as EXTREME as dramatic competitors.
Style: Palo Santo, Size: 2.65 Ounce (Pack of 1)
So far so good with this deodorant regarding how well it performs through a full day of light activity (morning yoga, playing with the dog, carrying kids around, etc.). The scent is light and I notice it periodically throughout the day, but it's light enough to not be overwhelming or smell like a strong cologne. The fragrance is very "Man Fireplace Candle" type scent, but in a good way that is perfect for its purpose. My biggest complaint is the deodorant is very malleable, almost putty-like, so it tends to get squished out the sides of the lid when open/closed daily, therefore making it messy. This is relatively avoidable by just winding down the wheel each time, but is "annoying" as opposed to just using and capping. It glides on smoothly and feels good on skin or "hairy pits". A little pricier, but it's worth it in my opinion. Will be purchasing again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2026
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Fenise
Chelsea, US
★★★★★ 5
Officially my favorite and exclusive deodorant.
Style: Vintage Suede, Size: 2.65 Ounce (Pack of 1)
This is the most amazing smelling deodorant I've ever used, and unique, too. Very smooth just like their shaving cream, and I haven't had any irritation. I've been complimented by a few people now on how good I smell.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
R
Verified Purchase
Ryan Bowser
Port Orchard, US
★★★★★ 5
Smells great. Doesn't mess with my pits.
Style: Casked Vanilla, Size: 2.65 Ounce (Pack of 1)
I ordered the casked vanilla scent. My lady loves it on me. The added benefit I wasn't expecting was no more sour pit smell by the end of the day that has plagued me using other brands. I'll keep ordering this stuff for now.
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Reviewed in the United States on May 24, 2026
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Braden
Charlottesville, US
★★★★★ 4
Effective
Style: Italian Bergamot, Size: 2.65 Ounce (Pack of 1)
Smells is nice but not amazing, the body wash in the Bergamot smells much better. But this stuff lasts. No chalky / sticky feeling but still keeps me BO free for two days straight.
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Reviewed in the United States on June 2, 2026
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dd
Belleville, US
★★★★★ 3
Some nice drawings, some surprising mistakes
Format: Hardcover
Typos
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Reviewed in the United States on February 1, 2026

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