SKU: 12888909340

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

Sale price$292.14 Regular price$324.60
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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Description

Dual Pro RS3 3 Bank Battery Charger w/3 Bank B.O.S.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 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 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 Pros 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 Batterys 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

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: 12888909340

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4.7 ★★★★★
Based on 10 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Lake Worth, US
★★★★★ 5
Pretty. Tiny. Hopefully has good battery life. UPDATE: The silver one was defective.
Color: Gold Raquel, Size: 14MM, Color: Gold Raquel, Size: 14MM
I bought both the gold and the silver ones. I have a collection of ring watches but most of them are sets you can buy for cheap. These are my first made by a well known watch company. They look big on picture but they are tiny. I bought it so when my smartwatch dies I have one on my ring to tell the time. I don't like going on my phone to check the time just to avoid distractions. I hope the battery lasts long. Updated review: I started using the gold one and it works great! The silver one wasn't working so I processed a return for it. However when they shipped the replacement, there was nothing inside the tin can fossil case. I called Amazon and they refunded me for the silver one. The product works great. I probably got a defective one. My fear is maybe someone took the ring before packing it for replacement. That's just wrong. I'm going to get the silver one from Macy's instead.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 13, 2024
S
Verified Purchase
Ss in calif
West Palm Beach, US
★★★★★ 5
Worth the money
Color: Gold Glitz, Size: 15MM
Beautiful watch ring. Looks more expensive than what the price. Very nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
A
Verified Purchase
Amazon Customer
Dallas, US
★★★★★ 1
Cheaply made
Color: Gold Glitz, Size: 15MM
I really love the concept and honestly it’s super cute BUT the diamond around the face of the watch fell off within the first wear:/ so unfortunate because it has so much potential.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 15, 2025
T
Verified Purchase
T. Hudson
Waukegan, US
★★★★★ 3
Beautiful watch, great packaging, but didn’t work.
Color: Silver, Size: 15MM
I love my ring watch so much that this is my second one (I washed my first one 😩). I ordered the ring on Wednesday and I got it Friday. I was so happy to get it, great packaging and fast delivery imagine how hurt I was when it didn’t work. I am gonna try to get a new battery and I pray that works but with the price being 80 plus dollars this should have never been a problem.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
H
Verified Purchase
Heather Lynn Hawley
Los Angeles, US
★★★★★ 4
Need more in different styles!
Color: Gold Glitz, Size: 15MM, Color: Gold Glitz, Size: 15MM
This ring watch is perfect! The face on it isn’t as big as all the other ring watches; which is why I chose it! I wanted something more dainty, as I have small fingers and hands. This ring is shiny, and the little crystals sparkle so nicely! The band doesn’t pinch, and I can wear it on multiple fingers. Easy to set and has kept time so far. Would recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026

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