Dual Pro SS4 Auto 4 Bank Battery Charger w/3 Bank B.O.S.
SKU: 33299226705

Dual Pro SS4 Auto 4 Bank Battery Charger w/3 Bank B.O.S.

Sale price$513.44 Regular price$570.49
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Dual Pro SS4 Auto 4 Bank Battery Charger w/3 Bank B.O.S.SS4 Auto 4 Bank Battery Charger with 3 Bank B. O. S. This kit combines Dual Pros B. O. S. Battery Optimization System 12V 3 Bank (PN: BOS12V3) and Dual Pros SS4 Auto 40A 4 Bank Lithium AGM Battery Charger (PN: SS4AUTO). 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

SS4 Auto 4 Bank Battery Charger with 3 Bank B.O.S.

This kit combines Dual Pro’s B.O.S. Battery Optimization System - 12V - 3-Bank (PN: BOS12V3) and Dual Pro’s SS4 Auto 40A - 4-Bank Lithium/AGM Battery Charger (PN: SS4AUTO).

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

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: 25.5 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: 33299226705

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Carnegie, US
★★★★★ 5
Nice iPad case. Good price, lots of colors,
Color: Papaya
Nice iPad case. Well made, fits great. Love the color!
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New York, US
★★★★★ 5
Excellent iPad case!
Color: 1-Navy Blue
Excellent case! Perfect for what I needed, very stable, flexible and the color is great. I've had it for almost a year now and there's no damage or wear. Would buy again! Easy to use, stable mechanism to stand up right and wonderful color options!
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Summer
San Leandro, US
★★★★★ 5
Bright & Pretty Hot Pink.
Color: Pitaya Red, Color: Pitaya Red
Very pretty and bright. It’s thick and great quality. Strong grip and doesn’t come off easily. Easy to clean when it gets dirty. It also has a nice backing. I prefer the transparent bright pink backing than the clear version. I love the strong magnetic for when I position it upwards. It can be positioned downwards too.
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LDC
Louisville, US
★★★★★ 5
Very protective iPad case
Color: 1-Navy Blue
This MoKo iPad case is excellent! It fits perfectly and provides great protection without adding bulk. The navy blue color looks very sleek, and the translucent back shell is a nice touch. It’s super magnetic, with great padding. The smart cover works flawlessly with the auto wake/sleep feature, and the cutouts line up perfectly for Touch ID. Lightweight, durable, and a fantastic value!
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RippedOff
Port Orchard, US
★★★★★ 5
Fits the new iPads. Buttons are easily accessible.
Color: 1-Navy Blue
Fits the new iPad. Buttons are easy to reach, and it protects the screen with a soft fell back. Easy white clean vinyl on the outside. It has open vent spots so your device can cool. Slim and sleek. A great value for the money. Buttons are easily accessible. High-quality.
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Reviewed in the United States on April 21, 2026

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