Dual Pro RS3 3 Bank Battery Charger w/3 Bank B.O.S. [RS3/BOS12V3]
SKU: 2043517005

Dual Pro RS3 3 Bank Battery Charger w/3 Bank B.O.S. [RS3/BOS12V3]

Sale price$264.15 Regular price$293.50
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Description

Dual Pro RS3 3 Bank Battery Charger w/3 Bank B.O.S. [RS3/BOS12V3]RS3 3 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 18A 3 6A Banks 12V 36V (PN: RS3). 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

RS3 3 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 - 18A - 3-6A-Banks - 12V-36V (PN: RS3).

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 - 18A - 3-6A-Banks - 12V-36V

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 of Dual Pro’s Satisfied Customers!
  • Wide Variety of Applications
  • Universal Input (100-240 VAC 50/60HZ)

Features:

  • 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
  • Models available to charge 12-24V systems
  • LED lights indicate “Each Battery’s” state of charge
  • Reverse polarity protected 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:

  • Charger Input - Voltage: 120/240v
  • Charger Output - Amps: 18a
  • Charger Output Voltage: 12/24/36v
  • Charging Banks: 3
  • Portable: No
  • Box Dimensions: 3"H x 6"W x 9"L WT: 14.7 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: 2043517005

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Verified Purchase
JR Landreau
Belleville, US
★★★★★ 5
Engine abd
Good quality, sturdy, and easy to install.
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Reviewed in the United States on September 7, 2025
K
Verified Purchase
K. Anderson
Houston, US
★★★★★ 4
Working great
Both filters fit just right and are doing a great job.
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Reviewed in the United States on October 9, 2025
T
The Southwest Grasshopper
Whiting, US
★★★★★ 5
Good replacement parts and affordable
I acquired this filter set to replace the OEM filters in my wife's Honda Accord. The filters fit perfect and were easy to install. Normally when I replace filters I have to purchase both the air filter and the cabin filter separately. In this case, it was very nice to have them sold as a combo set. While I don't know what materials are used to manufacture these filters, I will say that the air filter looks just like the OEM part in terms of it's production. The cabin filter does have carbon built in to help control orders, which is something the OEM part did  not have, so it looks different in terms of filter color. I normally replace filters every 10K to 15K miles, and this fits in line with that this manufacturer suggests (every 12K miles).  In all, a decent combo set of filters helps keep costs down and both filters can be replaced at the same time. 
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Reviewed in the United States on July 6, 2025
K
K Alex
Carnegie, US
★★★★★ 5
Perfect!!!
This is exactly what I needed. Fits perfectly for my 2018 Honda Accord as well as being very easy to install. This is coming from someone who has no idea about doing anything on my car. Provides the best function, just as it would coming from a dealer or other auto shop. The quality is great as well, and this is exceptional value for the money. If you are looking to save money and not get bombarded with the filter replacement question when getting an oil change then this is the one for you.
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Reviewed in the United States on August 4, 2025
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T. Isaacson
Charlottesville, US
★★★★★ 5
Fit is good.
Filters fit and look essentially the same as the filters I’ve purchased and the official types from the dealer. I live in an area where wildfires occur almost every year,  so it’s good to have an extra set of filters to change them out after a run of smoky days. 
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Reviewed in the United States on July 1, 2025

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