SKU: 27539386726

Dual Pro RS4 4 Bank Battery Charger w/3 Bank B.O.S. [RS4/BOS12V3]

$259.20 $288.00
Save 10%
No.2 Bestseller on ch >

Pay in installments of $72.00 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jun 13 - Jun 18

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Dual Pro RS4 4 Bank Battery Charger w/3 Bank B.O.S. [RS4/BOS12V3]RS4 4 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 24A 4 Bank (PN: RS4). 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

Dual Pro RS4 4 Bank Battery Charger w/3 Bank B.O.S. [RS4/BOS12V3]
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: 27539386726

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 2182 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Does what it says
Size: 16 Fl Oz (Pack of 1), Style: Individual
Have a JD 280 and it was not running well at all. Surging, not running good overall, where as previously it was. I used this and after a few hours of running, it cleared up very well and runs like a "Deere" now. Product line is still, one of the best out there. Bought again for my chain saw and use it in my weed wacker too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 7, 2025
M
Verified Purchase
M. Chulick
Waukegan, US
★★★★★ 4
Delivered quickly
Size: 16 Fl Oz (Pack of 1), Style: Individual
Just trying to keep my small engines running with this awful California fuel
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 4, 2025
S
Verified Purchase
Shopper scott
Waukegan, US
★★★★★ 5
Good buy
Fit great. I have a toro 7.25 Brigs & Stratton 21 icnh rececyler. Mower started up great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
R
Verified Purchase
Robert Edwards
Lexington, US
★★★★★ 5
Good Product
Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
M
Verified Purchase
MARC FOSTER
Birmingham, US
★★★★★ 5
Worked perfectly
Excellent product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026

recommand products

ST Suspensions ST XTA Coilover Kit for 2007-2013 BMW 3 Series 335i 6cyl Coupe (E92)
ST Suspensions ST XTA Coilover Kit for 2007-2013 BMW 3 Series 335i 6cyl Coupe (E92)
824.50
 Wisefab Front Narrow Angle Lock Kit for 2003-2008 Nissan 350Z (Z33)
Wisefab Front Narrow Angle Lock Kit for 2003-2008 Nissan 350Z (Z33)
995.00
 ST Suspensions ST X Coilover Kit for 2012-2018 BMW 3 Series 330i Sedan (F30)
ST Suspensions ST X Coilover Kit for 2012-2018 BMW 3 Series 330i Sedan (F30)
544.50
 Nature's Path Organic Smart-bran Cereal - Case Of 12 - 10.6 Oz.
Nature's Path Organic Smart-bran Cereal - Case Of 12 - 10.6 Oz.
68.56
 ST Suspensions ST Anti-Sway Bar Set for 1977-1979 BMW 6 Series 633 (E24)
ST Suspensions ST Anti-Sway Bar Set for 1977-1979 BMW 6 Series 633 (E24)
324.50