Description
Mastervolt Alpha Pro III 3-Step Regulator | Boat Supply Store
Optimized battery charging performance is achieved by transforming any alternator into a sophisticated 3-step charger. This unit actively protects your service batteries and engine by preventing overcharging and managing alternator load, reducing engine RPM variations and fuel consumption. It supports alternators up to 400A with a 20A field current capability and is compatible with all battery types, including Lithium Ion, across 12V and 24V systems.
Key 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. 200A - 400A models
- Integrated 'keep alive' feature for reliable tachometer readings
- Suitable for every battery type, including Lithium Ion
- Suitable for 12V and 24V system voltages
Specifications
| Product Specifications | |
|---|---|
| Model | Mastervolt Alpha Pro III |
| MPN | 45513000 |
| System Voltage Support | 12V and 24V |
| Max Alternator Output Control | 400A |
| Field Current Capability | 20A |
| Battery Type Compatibility | All battery types, including Lithium Ion |
| Communication Protocol | MasterBus |
| Tachometer Feature | Integrated 'Keep Alive' |
| Certification | CE |
Who This Is For
Boat owners and RV enthusiasts seeking to maximize battery charging efficiency from their engine-driven alternators, particularly those with high-demand systems or standard alternators requiring an upgrade. It is also for users aiming to enhance battery lifespan and protect their engine from overcharging and excessive electrical load.
How It Compares
| Feature | Mastervolt Alpha Pro III 3-Step Regulator | Balmar ARS |
|---|---|---|
| Max Alternator Output Control | 400 A | 200 A, 200 A |
| Field Current Capability | 20 Amps | 5 Amps, Not specified |
| Lithium Ion Battery Compatibility | Yes | No, Yes |
| Tachometer 'Keep Alive' Feature | Yes | No, No |
| Communication Protocol | MasterBus | None, Bluetooth |
Common Concerns Answered
Is the installation of the Mastervolt Alpha Pro III difficult?
Installation requires a good understanding of DC electrical systems and alternator wiring. While it offers significant benefits, professional installation is recommended for individuals without prior electrical experience to ensure correct setup and optimal performance.
Is the Mastervolt Alpha Pro III expensive?
While the initial investment for the Alpha Pro III may be higher than basic regulators, its advanced capabilities and superior performance in battery protection, charging speed, and system longevity provide a strong return on investment over time.
What makes the Alpha Pro III a better choice than other regulators?
The Alpha Pro III stands out due to its unique 3-step regulation, ability to control high-output alternators up to 400A with a 20A field current, and integrated 'keep alive' tachometer feature, all contributing to faster, safer battery charging and extended component life.
Frequently Asked Questions
What is the Mastervolt Alpha Pro III?
The Mastervolt Alpha Pro III is an advanced 3-step charge regulator designed to optimize the charging performance of engine-driven alternators for service batteries. It ensures batteries are charged quickly and safely while protecting both the batteries and the engine.
How does the Alpha Pro III improve alternator performance?
It converts standard alternators into intelligent 3-step chargers, actively monitoring battery temperature and voltage to deliver precise charging profiles. This significantly increases charging speed, reduces engine run times, and prevents overcharging.
Can the Alpha Pro III be used with Lithium Ion batteries?
Yes, the Mastervolt Alpha Pro III is compatible with all battery types, including advanced Lithium Ion chemistries, ensuring optimal charging performance and safety for modern battery banks.
What is the field current capability of the Alpha Pro III?
The Mastervolt Alpha Pro III boasts a robust 20A field current capability, allowing it to effectively control and optimize output from high-amperage alternators up to 400A.
What is the 'keep alive' feature on the Alpha Pro III?
The integrated 'keep alive' feature ensures a stable signal is maintained for the vehicle's tachometer, preventing common issues of erratic or lost RPM readings that can occur when upgrading standard alternators with basic regulators.
