SKU: 41986542917

Dual Pro SS4 Auto 4 Bank Battery Charger w/2 Bank B.O.S. [SS4AUTO/BOS12V2]

Sale price$472.50 Regular price$525.00
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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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Description

Dual Pro SS4 Auto 4 Bank Battery Charger w/2 Bank B.O.S. [SS4AUTO/BOS12V2]SS4 Auto 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 SS4 Auto 40A 4 Bank Lithium AGM Battery Charger (PN: SS4AUTO). 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

SS4 Auto 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 SS4 Auto 40A - 4-Bank Lithium/AGM Battery Charger (PN: SS4AUTO).

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

SS4 Auto 40A - 4-Bank Lithium/AGM Battery Charger

Latest Technology:

  • Detects if a battery is Lithium or AGM
  • Automatically charges both Lithium and AGM batteries for optimal performance
  • Fully automatic. Completely and safely charges both Lithium and AGM batteries
  • Algorithms designed and validated with battery manufacturers for a 100% charge
  • The startup feature will wake up batteries that have turned off due to low-voltage protection
  • Auto return to charging feature
  • Quickest charge times in its class
  • Unbeatable performance, reliability, safety, and quality delivered by DUAL PRO®

Features:

  • Waterproof - Use on land and in fresh and saltwater
  • TROUBLE-FREE—Just Plug It In and Forget It!
  • Independent outputs
  • Fully automatic/multi-stage charging
  • On-board diagnostic codes
  • FCC 15 Parts A & B interference compliant
  • Approved and meets ISO 8846 Marine standards
  • Ignition protected (US Coast Guard 33 CFR 183.410)
  • 3-Year Warranty

AutoProfile Intuitive Charging Technology Lithium/AGM

Professional and Sportsman Series chargers have set the standard in the marine industry for more than two decades, known as the safest, most reliable, and best performing chargers in the industry.

AutoProfile Intuitive Charging Technology provides flexibility for the charging system, ready for the ever-changing lithium battery technologies. No matter if users choose Lithium or AGM batteries for the boat, Dual Pro is ready to keep a boat on the water longer, enhancing battery performance and extending battery life.

Specifications:

  • Charger Input - Voltage: 120v
  • Charger Output - Amps: 40a
  • Charger Output Voltage: 12/24/36/48v
  • Charging Banks: 4
  • Portable: No
  • Box Dimensions: 3"H x 6"W x 9"L WT: 25.4 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: 41986542917

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4.4 ★★★★★
Based on 15 reviews
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Product Reviews
J
Verified Purchase
Julia
New York, US
★★★★★ 5
She loves them, therefore I love them too
Size: 5.5 Inch, Color: Ring Toy
My furbaby LOVES these, especially the peanut butter flavored ones. I still regularly brush her teefers, but these do help with dental care.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
P
Verified Purchase
Piano Man
Carnegie, US
★★★★★ 1
Made mostly of POLYPROPYLENE PLASTIC and should not be injested.
Size: 8 Inch - 2 Pack, Color: Tree Branch
BAD PRODUCT. DO NOT BUY THESE FOR YOUR DOG. They are made mostly of POLYPROPYLENE PLASTIC. It even says on the package - "CAUTION: Product is not intended to be eaten or ingested. If you believe your pet has swallowed a piece, please take away and contact veterinarian if needed. Our dachshund went to town on one of these and had diarrhea for two days and cost us several hundred dollars in vet bills to do x-rays and medicine for the poor dog. What do you think a dog is going to do with a dog chew? Just find another product. This one isn't worth it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
I
Verified Purchase
Isidro mora
Belleville, US
★★★★★ 5
Very durable.
Style: Snake
My frenchie loves this snake very durable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 13, 2026
J
jj
Alexandria, US
★★★★★ 4
A bit wider than I expected
Style: Coyote
I thought this was going to be a "flat" toy but was a bit surprised to see that it was more of a 3D shape than flat. It's unfortunately a bit too wide for my small/medium sized terrier so he really only grabs and chews on the tail and ears. It is pretty durable though and has held up well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
B
Brande B
Fort Morgan, US
★★★★★ 5
Toughest dog toy we've ever owned! Jasper approved!
Style: Elk, Style: Elk
If you are the owner of a "power chewer" who usually turns standard plushies into a snowstorm of stuffing in under five minutes, the HOUND2O Elk Stuffed Animal is the heavy-duty solution you’ve been looking for. This isn't just a toy; it’s a rugged piece of outdoor-grade gear that manages to stay "plush" while being nearly indestructible. Here is why this elk is the gold standard for aggressive chewers. The "Ballistic" Build The secret to its toughness lies in the materials. Unlike cheap fleece or thin polyester, the HOUND2O Elk is engineered for extreme durability. Ballistic Nylon Shell: The body is wrapped in high-denier ballistic nylon—the same type of material used in tactical gear. It’s incredibly resistant to punctures and tears from sharp canine teeth. Reinforced TPR Accents: The "antlers" and specific high-wear points are reinforced with Thermoplastic Rubber (TPR). This gives your dog a satisfying, grippy texture to gnaw on without compromising the toy’s structural integrity. Extreme Stitching: The seams are double-stitched and recessed, making it nearly impossible for a dog to find a "weak spot" to start a rip. Built for Adventure: This toy is marketed for "outdoor adventures," and it truly lives up to that branding: Water-Resistant & Buoyant: Unlike most stuffed animals that become soggy, heavy sponges, this elk is water-resistant and it floats. It’s the perfect companion for a trip to the lake or a game of fetch in the pool. Easy to Clean: Because the material is so dense, mud and slobber don't soak in deeply. A quick rinse with a hose or a wipe-down with soap and water makes it look brand new after a day in the dirt. High Visibility: The vibrant colors and distinct shape make it easy to spot in tall grass or murky water, so you won't lose it during a long-range game of fetch. Engaging (But Tough) Squeaker For many aggressive chewers, the goal is to "silence" the squeaker as fast as possible. Protected Internal Squeaker: The squeaker is buried deep within the ballistic layers, making it much harder for a dog to pinpoint and puncture. It provides that high-value auditory feedback that keeps dogs engaged without being an easy "kill point" for the toy. Performance at a Glance Durability - Ballistic nylon and TPR are a "power chewer" dream. Versatility - Floats, easy to clean, and works indoors/outdoors. Engagement - Mixed textures (nylon + rubber) keep dogs interested. Value - Outlasts 10 standard plush toys combined. The HOUND2O Elk is a 10/10 for any pet parent tired of throwing away shredded toys. It is incredibly tough, intelligently designed, and built to withstand the "ruffest" play. While no toy is truly 100% indestructible for every single dog, this is as close as a plush-style toy can possibly get. If your dog loves the "thrill of the hunt," try hiding this elk in some tall grass or bushes outside. Its tough shell can handle the brush, and it’s a great way to provide mental stimulation alongside a heavy chewing session!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026

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