Brand: Mastervolt
Mastervolt Alpha Pro III 3-Step Charge Regulator (45513000)
Mastervolt Alpha Pro III 3-Step Charge Regulator (45513000)
3 available
About this product
The Mastervolt Alpha Pro III is an advanced 3-step charge regulator designed to optimize the performance of standard and high-performance alternators in marine and vehicle applications. By replacing a standard alternator regulator, this device improves charging efficiency, protects against overheating and overcharging, and extends battery lifespan. The unit is compatible with 12V and 24V systems and supports all battery types, including Lithium Ion.
Key Features:- Capable of controlling alternators with outputs up to 400 A.
- Provides full temperature-controlled 3-step charging.
- Balances engine load to reduce RPM variations, noise, and fuel consumption.
- Integrated keep-alive feature for accurate tachometer readings.
- MasterBus compatible for simplified system integration and monitoring.
- Supports high-output configurations up to 20 A field current capability.
Regulatory note: This product includes a California Proposition 65 warning regarding exposure to di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer, birth defects, or other reproductive harm. Please note that use of this regulator is not permitted on Euro 5/6 engines.
Manuals & videos
- Secure checkout
- 21-day return requests
- Free standard shipping $100+
Product facts
- CT SKU
- CT-106355
- Model / MPN
- 45513000
- UPC / GTIN
- 816882020377
- Package dimensions (H × W × L)
- 1" X 4" X 4"
- Package weight
- 0.09 lb
- Country of origin
- NETHERLANDS
Fit-sensitive item: confirm measurements, model numbers, and manufacturer details before ordering. Tug & Tow does not guarantee universal compatibility from a product page alone.
Shipping & returns
Shipping & returns
Request an eligible return within 21 calendar days after delivery. Every physical return requires written approval and an RMA number and must be shipped within five business days after the RMA is issued. The customer pays return shipping for an ordinary return. Tug & Tow provides prepaid return shipping for a verified damaged, defective, short, or incorrect shipment. We do not charge a restocking fee. See Shipping & Returns for eligibility, exclusions, and details.
Fit & compatibility
Fit & compatibility
Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.
Need help choosing?
Need help choosing?
Send us the product link or SKU, plus details about your boat, RV, trailer, vehicle, or project. We will help you narrow down the right option when product fit is not obvious.
