SKU: 82744965644

Dual Pro B.O.S. Battery Optimization System - 12V - 3-Bank

$212.35 $235.94
Save 10%
No.2 Bestseller on mapetitemediatheque.fr >

Pay in installments of $58.98 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 21 - Aug 26

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Dual Pro B.O.S. Battery Optimization System - 12V - 3-BankB. 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

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 quadruples 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 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
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.
Manufacturer Part Numbers: BOS12V3
Quick Guide (PDF)
Brochure Literature (PDF)
GRP:WRO
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: 82744965644

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.0 ★★★★★
Based on 9 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Movie Fan
Lexington, US
★★★★★ 3
Nice Edger as long as the blade doesn't come loose -- and it will come loose, repeatedly!
Probably could've/should've rated this 2 stars yet it works well when it works. I purchased this edger to edge my drive and sidewalks and not for trenching. The edger arrived very quickly after I ordered it (I am not a Prime member so this was a nice surprise). Assembly was easy and straight-forward. The first use went smoothly and the edger performed flawlessly and provided clean, smooth edging. About 20 minutes into the second use I noticed that the edger was cutting and quickly determined that the blade was spinning freely -- fortunately the hex nut was still attached to the threaded shaft. I reviewed the manual that came with the edger, grabbed the correct sized socket and torque wrench. I removed the hex nut, the first washer, the blade and then the second washer. To install I followed the directions ensuring that the flats of the washer aligned with the flat on the shaft and tightened the hex nut to the specified 140 in-lbs. The edger worked well for about 10 minutes and the blade once again became loose. This time I replaced the original blade (which did not need to be replaced from a wear perspective) with a new B&D blade and new washers. Once again I followed the instructions and this time the edger performed flawlessly until about 5 minutes remaining in my edging when once again the blade came loose. my experience has most certainly been frustrating to say the least. one should not need to carry a socket and torque wrench with them and repeatedly need to tighten the blade. So, when the edger performs as intended it does an excellent job at edging; however I have no confidence that this edger will be able to perform as intended throughout repeated uses and more importantly has shown that it cannot complete my edging without requiring tightening the blade (which requires disassembly down to the second keyed washer). Potential buyers should be prepared for this experience and make your decision accordingly. Note: I tried contacting black and decker via twitter (@blackdeckerhome) and never received a response; I could not find a separate customer service/support twitter account. Trying to contact customer service via the phone these days is an exercise in patience to say the least.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 11, 2022
R
Verified Purchase
Robert S.
Phoenix, US
★★★★★ 5
Trimmer results
Was alittle hesitant with this being B&D But I was surprised how great it really is. By far way above my expectations. Works like a charm and does a great job. Chose electric because I really don't have other than a driveway to do. But it really did good around the flower beds. Cord limits you alittle but nothing to cry about. Quiet also but still use ear plugs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
C
Verified Purchase
Charles H. Pretti Jr.
Chelsea, US
★★★★★ 5
Light weight and very functional
Incredibly light and functional, this trimmer forks with either string or resin blades. I personally prefer the blades. At the time I bought the unit I couldn’t locate replacement resin blades. I finally called Black and Decker and they sent me two packages of the replacement blades for free! The shield keeps trimming from being a messy horror show. No more back soreness because of the ligh weight of the unit. I’m very pleased with both the product and Black and Decker.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 22, 2025
T
Verified Purchase
Tatiana Lema
West Palm Beach, US
★★★★★ 5
Espectacular
Es genial, tiene una potencia grandiosa. Me encantó, la recomiendo 100%
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
S
Verified Purchase
Sparklez
Port Orchard, US
★★★★★ 4
Needs improvement
This trimmer really looks nice and it comes with some great attachments but what I found is that if you're going to switch from the line attachment to the little plastic attachment you have to sit somewhere where you can lay the item down because you have to unscrew one to put on the other. There is no way to easily switch from line trimming to attachment trimming without using the device that unhooks the screw. In my opinion that is really a detriment to the beauty of the overall working of this item the weight of it is good, it cuts good it automatically feeds the line out the color is nice and the price is great but then you have the issue of changing the line back and forth if this was improved I think I would definitely give it five stars I'm sorry but improvements need to be made.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 14, 2025

recommand products

Wooden Rocking Horse with Music, Sound, Saddle for 3-6 Years
55.19
EMF - Pantastic Non-Stick Korean Wok 32cm
45.95
PawHut Cat Sofa Pet Couch w/ Removable Backrest, Soft Cushion, Washable Cover, for Small and Medium Sized Dogs, Grey
59.99
Set of 2 Raised Beds for Garden, Galvanised Steel Outdoor Planters Multi-reinforced Rods for Vegetables, Plants, Flowers and Herbs, 180 x 90 x 59 cm
119.99
MOOSE RACING Radiator Hose Kit - Orange - KTM KTM111-OR
171.95