Mastervolt Alpha Pro III [45513000]
SKU: 46668242970

Mastervolt Alpha Pro III [45513000]

Sale price$176.85 Regular price$196.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Mastervolt Alpha Pro III [45513000]Alpha Pro III Advanced 3 step charge regulator for standard and high performance alternators The propulsion engine of your boat or vehicles may be used to quickly charge your service batteries, either while cruising or taking a break. The advanced and powerful Alpha Pro III ensures fast and safe charging, protecting both the engine and the batteries. Building on 10 years of experience, the Alpha Pro III features a modernized look, higher power and

Alpha Pro III

Advanced 3-step charge regulator for standard and high performance alternators

The propulsion engine of your boat or vehicles may be used to quickly charge your service batteries, either while cruising or taking a break. The advanced and powerful Alpha Pro III ensures fast and safe charging, protecting both the engine and the batteries. Building on 10 years of experience, the Alpha Pro III features a modernized look, higher power and improved ease of use.

The Alpha Pro III measures the temperature and the voltage of your batteries to prevent overcharging, keeping them in perfect condition. It also monitors the engine load, thus reducing sound variations, wear and tear. The smart ‘keep alive’ feature solves a common problem causing unreliable tachometer readings. Via MasterBus, it communicates RPM, alternator status and charge status to create intelligent power systems. 

Pull the max out of your alternator

The alternator that comes with the engine is not optimally suited for charging service batteries. Designed for low cost and short charge cycles, it charges at a slow pace and is easily overheated. Replacing the standard regulator* with the Alpha Pro III optimizes this charging process, protects against overheating and overcharging and extends the lifetime of your batteries. 

(* not allowed on Euro 5/6 engines)

Super charge your system

For superfast charging at low RPM, Mastervolt recommends to combine the Alpha Pro III with a high performance alternator such as the reputable Alpha series. With 20 amps of field current capability, the Alpha Pro is the only 3-step regulator in the market capable of controlling alternators with outputs up to 400 A!

Alpha Pro III: Fast charging, anytime, anywhere. 

Features:

  • Transforms every alternator into a full temperature controlled 3-step charger.
  • Reduces run time, saves fuel, reduces noise and emissions.
  • Protects from overcharging and extends battery life.
  • Balances engine load, reducing RPM variations.
  • Compatible with standard and high performance alternators, incl. 200 A 400 A models.
  • Integrated ‘keep alive’ feature for reliable tachometer readings.
  • Suitable for every battery type, including Lithium Ion.
  • Suitable for 12 V and 24 V system voltages.
  • Masterbus compatible: simplifies wiring, saves space and weight, and creates optimal cooperation between Mastervolt products.

Applications:

Applications range from improving the performance of a standard alternator in a vehicle or boat, to generator replacement, when combined with a high performance alternator. 

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.


Owner's Manual (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: 46668242970

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 58 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
H
Verified Purchase
Happy customer
Whiting, US
★★★★★ 4
Healthy treat!!
Size: 14 Ounce (Pack of 1)
My little Yorkie loves these! A healthy treat that's not messy and keeps him busy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 19, 2026
A
Verified Purchase
Amazon Customer
Lake Worth, US
★★★★★ 5
Dogs love these
Size: 2 Pound (Pack of 1)
My dogs love these. Kind of like a potato strip. A simple dried but slightly chewy strip. Will buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
J
Verified Purchase
James C Stringham
Belleville, US
★★★★★ 5
Best dog snack around.
These are my dog’s favorite snacks in the world. They are fresh, healthy, and the dog thinks she’s getting a naughty snack because they’re sweet! 😆
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
D
Verified Purchase
Dian B.
Pawtucket, US
★★★★★ 5
Good treats
Dogs love these! We have Chihuahuas and have to cut these in half for them as a while one is too large.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
K
Verified Purchase
Kiki
Lake Worth, US
★★★★★ 5
Healthy, Slightly Soft/Chewy Treat!
VERY pleased to have found these! Wanted something to offer Mookie as a "special treat" (a step up from Milkbones, but NOT long-lasting) that was healthy and easily digestible. He wasn't sure what to make of them at first... they're fairly soft and a little chewy, and they just smell like FRESH sweet potatoes -- not any fake meat or seasoning. Once he started chewing, however, he got very excited about the new treat, and now when he hears the bag being handled/opened, he comes running and does his little happy dance! We'll be keeping these on hand because the quality and reasonable price - combined with the LACK of tummy distress and his enjoyment - make this a "go-to" special reward.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026

recommand products