Alpha 24/150 MB

Delivery includes Alpha Pro MB charge regulator.

  • Fast & complete charging of starter and service batteries.
  • Power supply for all consumers.
  • 12 V and 24 V versions.
  • 75 A to 150 A charge current.
  • Standard delivered with Alpha Pro MB charge regulator for an optimal performance and longer-lasting batteries

Using a Battery Mate or battery isolator in conjunction with an Alpha alternator makes it possible to easily charge two or three separate battery sets simultaneously.

TIP: A second alternator on the main engine, combined with a larger battery bank and inverter, could be an alternative for a generator.

For all engine types

Alpha alternators are equipped with several fixations for customised alternator brackets, available from your installer or engine supplier. Some engine brands come with Mastervolt alternator brackets as an option.

Fast charging, even at a stationary rpm

Standard alternators only supply the specified capacity at a high rpm. The Mastervolt Alpha alternator is specifically designed for powerful charging, even with a low engine rpm.

Multigroove pulley

The 12/130 and 24/75 models are also available with a multigroove pulley.

Performs above 40 °C

Forced cooling by fan operation of the pulley provides a lot of power in higher temperatures, especially close to the engine.

Product code: 48524150 This product is no longer available.
Please click here for the current model:
Alpha 24/150 III
download pdf


General specifications
Charge regulation an Alpha Pro MB regulator comes standard with all models
Total charge current 150 A
Cable length regulator/alternator 1,5 mtr oil resistant marine connection cable
Belt section 2xA
Isolated operation yes
Rotational direction 2
Mounting five to six, six o’clock & five past six
Dimensions see ‘downloads’ for drawings
Weight 13.1 kg
28.9 lb
Technical specifications
Charge voltage Absorption 28.5 V
Charge voltage Float 26.5 V
Nominal diameter pulley 89 mm
3.5 inch



Alpha 24/150 MB

Charge characteristics for Mastervolt alternators models Alpha 12/90, 12/130, 24/75, 24/95C, 24/110...


Drawings (dimensions)

Dimensions Mastervolt Alternator model 24/150 (zipped DXF and PDF).


Installation manuals

Alpha 24/150 MB

Appendix Alpha Pro Alternator (English)


User manuals

Alpha 24/150 MB

User's manual Alpha Alternator and Alpha Pro regulator (English)


Product notifications

Alpha 24/150 MB

Mastervolt alternators & brackets


3D product drawings

Zipped STEP file Alpha Alternator 24-150 excl regulator



Liz Wardley, boat captain of Team Turn the Tide on Plastic, really likes the reliability of the Mastervolt Lithium Ion batteries onboard the VO65.

Watch the interviews and learn more about the excellent Mastervolt performance during the 2017/18 edition of the Volvo Ocean Race.

Abby Ehler from Team Brunel shares her experience with the Mastervolt Power System in the Volvo Ocean Race, especially when it comes to ease of operation.

Simon Fisher, navigator of Vestas 11th Hour Racing, elaborates on the importance of the flawless integration of Mastervolt and B&G.

Neil Cox, Head of the Boatyard, gives you an extensive look inside the electrical system on every boat participating in the Volvo Ocean Race.


Multigroove pulley

Sold separately for model 24/110 and 24/150. View product