Dual Pro SS4 4 Bank Battery Charger w/2 Bank B.O.S. [SS4/BOS12V2]
SKU: 97106590322

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

Sale price$458.10 Regular price$509.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Dual Pro SS4 4 Bank Battery Charger w/2 Bank B.O.S. [SS4/BOS12V2]SS4 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 Sportsman Series Battery Charger 40A 4 10A Banks 12V 48V (PN: SS4). 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 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 Sportsman Series Battery Charger - 40A - 4-10A-Banks - 12V-48V (PN: SS4).

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

Sportsman Series Battery Charger - 40A - 4-10A-Banks - 12V-48V

Dual Pro’s customers asked for a series of chargers that were smaller, lighter, and economically affordable. The Sportsman Series of chargers answers these needs. This line of chargers is designed for all types of battery applications. Sportsman chargers have all the safety and reliability features that have made PRO Charging Systems chargers the #1 choice of most boat manufacturers, dealers, and over 750,000 customers across the country. Advanced microprocessors and LED readings make the units even easier to use.

Battery Charging System Designed for Use On Land and in Fresh and Salt Water:

  • The “Green” Charger: Totally “Repairable” Not a Throw-Away
  • 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!
  • Fully Automatic and Waterproof

Features:

  • Approved for Wet Cell and AGM batteries
  • Models also available for Gelled Electrolyte batteries
  • Designed for use in fresh and saltwater
  • DeltaVolt® Intuitive Charging Technology
  • Waterproof, dependable, rugged construction
  • Independent outputs
  • Fully automatic/multi-stage charging
  • Zero spark technology
  • Battery maintenance mode
  • On-board diagnostic codes
  • Temperature-compensated
  • Advanced microprocessor controlled
  • Battery systems available: 12V – 48V
  • LED lights indicate the state of charge
  • Reverse polarity protected
  • No installation restrictions
  • FCC Parts A & B interference-compliant
  • DC charge cables = 5' AC power cord = 3'
  • Approved and meets ISO 8846 Marine standards
  • Ignition protected (US Coast Guard 33 CFR 183.410

May Be Used in Many Types of Sporting Applications Including:

  • Inland Watercraft
  • Salt Water Watercraft
  • Motorcycles
  • Golf Carts
  • Utility Vehicles

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: 25.8 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: 97106590322

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NC Nurse Tom
Lake Worth, US
★★★★★ 4
Single-ingredient moisturizing treatment with a pleasant smell
When this is described as "batana oil," that's exactly what it is. Not a dozen other ingredients with just a little bit of batana, no colors or fragrances, just batana oil. I love that about this. It's easy to use, just melt it into you hands and massage it into your scalp and hair. Folks with long hair would do well to concentrate on the ends since that's where you're less likely to get natural oil from your scalp to help keep the hair healthy. Leave it in for a bit, then wash it off in the shower with shampoo. Not at all complicated. I loved how my scalp felt afterward, definitely less itchy and "tight." as far as regrowing any hair or anything, I think the only thing that would help me is a miracle, so I'm not basing my review on that. The smell is nutty and very nice. Similar to the roasty notes of coffee or chocolate. Very pleasant and not "chemical" or perfumey smelling.
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Reviewed in the United States on February 26, 2026
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Verified Purchase
Vonnie
Charlottesville, US
★★★★★ 1
False
Size: 4.2 Fl Oz (Pack of 1)
How does the reviews when I purchased go from 4.7 to 4.5 meaning it’s not a good product, therefore wasted money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
L
Lpenguin
San Leandro, US
★★★★★ 5
Nice Scent but Too Early to See Results
I’ve just started using this batana oil, so it’s too early to say if it actually helps with hair growth or thickness. I’ll need to use it consistently for a while before seeing real results. So far, I do like the smell—it has a nice scent and doesn’t feel overwhelming. The oil itself feels nourishing and easy to apply to the scalp and hair. The size is decent for the price, but like most hair treatments, the effectiveness will really depend on long-term use. Pros: Pleasant scent Feels nourishing on hair and scalp Easy to apply Cons: Too early to tell results Overall, it seems promising, but you’ll need to give it time to see if it actually delivers on the hair growth claims.
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Reviewed in the United States on March 18, 2026
H
Hope H
Houston, US
★★★★★ 5
Great batana oil for hair
Banana oil is so incredible, I will never stop singing its praises. I am prone to dry scalp and have thin, curly hair that needs just the right amount of moisture or it will frizz out. Batana oil has helped restore balance to my scalp and reduced flakes and it adds just enough moisture to my hair. This oil is a great version. It is thick, but not so thick that it doesn't melt in your hands if you rubs them together. I also have not noticed any stickiness or excessive left on my hands that can happen with some Banana oil brands. I do want to note that I usually put the batana oil on my scalp, let it sit for 15-20 minutes then wash it out, if you are going to let it stay in your hair, this may be too heavy for you. Otherwise, a great deal at the list price of $14, since a little goes a long way.
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Reviewed in the United States on May 19, 2026
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EmeraldSunset
Louisville, US
★★★★★ 1
not good
Size: 4.2 Fl Oz (Pack of 1)
this burn my skin, this is not Dr. Sebi because is no longer with us.
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Reviewed in the United States on May 2, 2026

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