SKU: 41789615505

Dual Pro RS4 4 Bank Battery Charger w/2 Bank B.O.S. [RS4/BOS12V2]

Sale price$283.50 Regular price$315.00
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Ships within 48 hours · Estimated delivery Sep 27 - Oct 2

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Description

Dual Pro RS4 4 Bank Battery Charger w/2 Bank B.O.S. [RS4/BOS12V2]RS4 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 RealPRO Series Battery Charger 24A 4 Bank (PN: RS4). 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

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

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

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: 11.55 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: 41789615505

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4.4 ★★★★★
Based on 18 reviews
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Product Reviews
J
Verified Purchase
Jacob
New York, US
★★★★★ 5
Good Product
Scent: Unscented
Honestly one of the better bar soaps I’ve tried in a while. It’s priced a little higher than what you’d grab off a drugstore shelf, but you can tell pretty quickly that you’re getting something different it lasts longer, feels more substantial, and actually does something for your skin rather than just cleaning it. The lather is rich without feeling heavy, and after a few days of use you notice your skin staying softer without needing to reach for lotion right after. If you’re on the fence about upgrading your soap, this one’s worth trying.​​​​​​​​​​​​​​​​
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
F
Verified Purchase
fingercast
Lake Worth, US
★★★★★ 4
Great soap but does not last long
Scent: Unscented
Good soap. Lathers well. Does not last long for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
S
Verified Purchase
Sarah
Omaha, US
★★★★★ 5
I’ve never loved a bar of soap so much.
Scent: Unscented
For starters, I suffer with severe sensitive skin, Eczema (which also has a huge gut health component) - however I’ve been struggling pretty bad the last few months. In my search to find more natural and nontoxic options, I stumbled upon castile soap - I’ve been using it to wash my dishes, clothes, skin. Finding out that the alkalinity of the soap can destroy sensitive skin barriers (even with diluting). I think it is been the leading cause of my skin dryness. (Despite lathering up with things like organic Shea butter and castor oil). I was getting very frustrated and very stressed and I found this family owned company. I’ve always wanted to try more tallow products, and know how amazing honey and castor oil is for health and rejuvenation (inside and out). I figured what the heck this is a pretty decent price. When I say I do not want to stop using the bar so I mean it like it is now becoming a struggle for me to get out of the shower because I want to keep blathering up because it feels so good. As a bartender and someone who hates having dirty hands - I really hate washing my hands, despite how much I feel obligated to do it. I’m contemplating bringing a bar of soap With me wherever I go so that I have good soap to use 😆. I’m about to buy some from my mom and try other products. I will update if my skin issues have subsided (in a month or so I reckon). I am getting an Eczema patch on my stomach/torso area, my inner thigh to my knee, and back of legs as well. As well as for the last month despite how much dry skin I take off my face, And how much castor oil I rub in - even with a moist appearing face - the flaky skin pokes through. I immediately felt soft skin upon using this product on my face. Normally, I would test out a small area, but with only a few ingredients I was like screw it. I ran out of soap and it’s either that or using watered down castile. Please give this a try. I cannot attest for the scented versions. Also, I saw someone say that it burned their eyes? Castile burns my eyes - this, does not. (And I probably scrub my eyes harder than I should post makeup remover - which is a balm - and just on the eyes).
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Reviewed in the United States on January 3, 2026
M
Verified Purchase
Marie S. Dillman
Phoenix, US
★★★★★ 5
I will buy again
Scent: Unscented
Love this soap. Perfect for removing make up and oils before bed. No ever powering scent and you can feel the clean after using. Great value for the money
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Reviewed in the United States on May 9, 2026
L
Verified Purchase
LauraT
Grantham, US
★★★★★ 5
Great first impression!
Scent: Unscented
This soap was delivered last night, so I used it first thing this morning. So far, I am very satisfied. It has almost no odor—which I like. It created a good lather and left my face and body feeling soft and clean, but not dry. The natural ingredients mean it’s actually good for my skin! It seems to be a great value. The only improvement I can suggest is to make the edges a little softer (more rounded) because it’s quite square to be rubbing my underarms (and other delicate areas). If new details are warranted, I’ll edit this review
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026

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