SKU: 86213379345

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

Sale price$316.35 Regular price$351.50
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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: 86213379345

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4.5 ★★★★★
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Product Reviews
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Verified Purchase
Laura Torres
Alexandria, US
★★★★★ 5
Fresh and Flavorful Pepper
Size: 16 Ounce (Pack of 1), Size: 16 Ounce (Pack of 1)
These Sauer’s whole black peppercorns are very fresh, strong, and full of flavor. I love adding them whole to meats and rice, for me it’s always a nice surprise to find a peppercorn in a spoonful and taste that magical, spicy kick. The quality is excellent, and the aroma is natural and bold. The 1 pound canister is a great value because it brings a lot and lasts a long time. Perfect for grinding or using whole in everyday cooking.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 30, 2025
B
Verified Purchase
Bryan
Belleville, US
★★★★★ 5
Fresh, Bold Flavor That Transforms Every Dish – A Kitchen Staple Worth Stocking Up On!
Size: 16 Ounce (Pack of 1)
As someone who cooks for a family of six and hosts weekly dinners, I needed a reliable source of high-quality black pepper that wouldn't lose its punch in bulk. Sauer's Whole Black Pepper in this 1-pound canister has been an absolute game-changer. The peppercorns arrived perfectly fresh, with that deep, aromatic aroma that hits you the moment you open the lid – no stale or dusty vibes here. They're uniform in size, easy to grind (whether in a mill or mortar), and deliver a sharp, spicy kick that elevates everything from simple scrambled eggs to my signature grilled steaks. The canister itself is a smart design for foodservice pros like me – airtight seal keeps moisture and air out, so it stays potent for months without clumping. I've already gone through half in just three weeks of heavy use, and it's held up flawlessly. No fillers, just pure, whole black pepper from a brand I trust. If you're tired of pre-ground stuff that tastes like sawdust, grab this – your taste buds will thank you. Five stars all the way; I'll be ordering the next canister before this one runs dry!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 13, 2025
K
Verified Purchase
Katrina
Omaha, US
★★★★★ 5
Nice Peppercorns
Size: 16 Ounce (Pack of 1), Size: 16 Ounce (Pack of 1)
Very pleased with these Sauer’s whole black peppercorns. The quality is excellent — fresh, aromatic, and full of flavor. They grind easily in my pepper mill and make a noticeable difference compared to pre-ground pepper. I’ve used them on everything from salads to steaks and soups, and the flavor really stands out. Great value for the amount you get, and I’ll definitely purchase again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
P
Verified Purchase
Pooh
Phoenix, US
★★★★★ 5
Nice peppercorns!
Size: 16 Ounce (Pack of 1)
This is a container full nice fresh whole peppercorns for a reasonable price. I use freshly cracked pepperin my cooking, as well as at the table seasoning and it makes a nice difference in taste.
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Reviewed in the United States on February 17, 2026
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Verified Purchase
Ginge
San Leandro, US
★★★★★ 5
Peppercorns
Size: 16 Ounce (Pack of 1)
Value size perfect for refilling our pepper mill. Taste is great just the right spice. Peppercorns were fresh. Would order again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2026

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