Mastervolt Alpha Alternator 12/130 - 48212130

SKU: EX 48212130

1-2 weeks delivery time

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The Mastervolt Alpha 12/130 Alternator (48212130) delivers a robust 130 A charge current at 12 V, making it ideal for fast and efficient charging of both starter and service batteries — even at low RPM. Designed with a six o’clock mounting position, dual A-section belts, and an 89 mm pulley, it includes the Alpha Pro III regulator for optimized battery performance. With forced fan cooling for operation above 40 °C and full galvanic isolation, it's perfect for marine, mobile, and industrial applications. Weight: 10.1 kg.

Description
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Mastervolt 48212130 - Alpha Alternator 12/130 (130A, 12V, Dual A Belt, Isolated, With Alpha Pro III)

The Mastervolt Alpha Alternator 12/130 is engineered for high-efficiency charging, even at low engine RPM, making it a reliable choice for marine, mobile, and industrial environments. With a powerful 130 A charge output and durable construction, this alternator ensures fast, complete charging of both starter and service batteries. It is fully isolated and features a robust cooling system designed for performance above 40 °C.

Key Features:

130 A charge current at 12 V for fast battery recovery
Supplied with Alpha Pro III charge regulator for optimal charge profiles
Designed for low-RPM charging efficiency
Supports charging multiple battery banks via Battery Mate or isolator
Multigroove pulley compatibility (optional)
Forced cooling for high-temperature reliability
Mounting position: six o'clock
Galvanically isolated
Bidirectional rotation support

Applications:

Marine propulsion systems
Off-grid mobile battery charging setups
Backup power solutions with large battery banks

Technical Specifications:

Charge Voltage (Absorption)	14.25 V
Charge Voltage (Float)	13.25 V
Total Charge Current	130 A
Voltage	12 V
Regulator	Alpha Pro III (included)
Rotational Direction	Bidirectional
Belt Section	2xA
Nominal Pulley Diameter	89 mm (3.5 in)
Mounting Position	Six o'clock
Weight	10.1 kg (22.3 lb)
Isolated Operation	Yes

Installation Notes:

The Alpha 12/130 can be installed on all engine types using appropriate brackets. Custom brackets are available from engine manufacturers or Mastervolt-certified installers. A second alternator system can serve as a practical alternative to installing a generator when paired with a large battery bank and inverter.