Need assistance? Call us at (888) 808-5549

  • USA warehousing

  • Friendly support

  • Best prices

  • Secure checkout

Mastervolt  |  SKU: CW81032

Mastervolt 24/75, 75A, 24V Battery Charger - 40020756

$2,409.99 $3,318.27

Estimated Shipping Widget will be displayed here! (with custom color)

Authorized dealer

Your #1 trusted source for Mastervolt products.

Shipping info

Most orders are processed and shipped from our USA warehouse within 1 to 3 business days of an order being placed (excluding weekends and holidays).

If, in the case, the item has a different handling and/or shipping estimate, it will be clearly displayed under the Add to cart button.

Click here to view our full shipping policy

Returns info

Eligible for returns: Yes

Time frame allotted: 30 days from the date of delivery

*Item(s) must be in new and unused condition to be eligible

To learn how to request a return please visit our return & refund policy:

Click here to view our full return & refund policy

Photo of Friendly Avanquil Customer Support Representative

Need assistance? We're happy to help!


24/75, 75A, 24V Battery Charger

The right choice for demanding conditions

Mass battery chargers are designed for the toughest conditions for professional, semi-professional, and recreational purposes. Even under the most extreme conditions, the products from the Mass series operate faultlessly, giving you round-the-clock output when necessary. The sustainability and technologies that underpin the Mass concept have long been proven in practice. With an MTBF of 180,000 hours at full capacity and 24/7 use, the Mass products are ideal for the toughest tasks and any situation that requires a reliable power supply. 


  • Designed for the most difficult conditions.
  • Lightweight, stainless steel, anodized aluminum casing.
  • Coating of internal components prevents damage from dampness or condensation to ensure a longer lifespan.
  • Insensitive to electromagnetic effects from other devices.
  • Suitable for every type of battery, also charges flat batteries.
  • Delivered as standard with temperature sensor.
  • Full power at temperatures of up to 40.
  • Load capacities from 80 to 1000 Ah or more.
  • Stable and ripple-free power supply, even without batteries.
  • The Current Control function prevents the breakdown of fuses when the voltage drops.
  • Parallel switching is possible using multiple battery chargers.
  • Connections by CE, ABYC A-31, and IEC60945.
  • GMDSS models and panels are available.
  • Certified by RRR, RMRS (does not apply to 24/75 120 V).
  • Certified by DNV GL (only 24/25, 24/50, 24/75, 24/75 (120 V), 24/100 models).

GMDSS Compatible

The Mass series is designed for the most demanding situations. To help you comply with SOLAS regulations, all Mass battery chargers are GMDSS compatible. GMDSS stands for Global Maritime Distress and Safety System and allows users to monitor various alarm functions. GMDSS versions of the Mass 24/25 DNV, Mass 24/50, Mass 24/75, Mass 24/100, and Mass 24/100-3ph are available.

A separate remote panel is available, which is compatible with all Mass battery chargers.

A single front display with GMDSS remote panel is available for:     

  • Mass 24/25-2 DNV
  • Mass 24/50-2
  • Mass 24/75, Mass 24/100, Mass 24/100-3ph

Charging Lithium Ion batteries

Although Lithium-ion batteries are increasingly popular, there can be a lack of clarity when it comes to the charging process. This is not a problem with Mastervolt as the Mastervolt battery chargers communicate directly with the Lithium Ion battery via the integrated MasterBus (or have been adapted to the required charging voltages).

MasterBus compatible

Mass battery chargers can be easily connected to a MasterBus network with only one cable and one connection. You can also choose central, local, or remote monitoring, configuration, and control of your system.

Made tough by smart design 

The certified Mass battery chargers are very strong and designed to withstand heavy vibrations and shocks. Their premium quality components meet the highest possible specifications, while the smart and extra robust mounting adds to the professional result.


  • Nominal output voltage: 24 V
  • Total charge current: 75 A at 28.5 V
  • Number of battery outlets: 1
  • Battery bank size: 150-750 Ah
  • Nominal input voltage: 230 V (180-265 V), 50/60 Hz
  • Power supply mode: yes
  • Galvanic isolation: yes
  • Display/read-out: LED display
  • Dimensions, hxwxd: 420 x 318 x 130 mm, 16.5 x 12.5 x 5.1 inch
  • Weight: 7.7 kg, 17.0 lb
  • Compliance: CE, ABYC A-31, RRR, RMRS, DNV GL

Manufacturer : Mastervolt
Manufacturer Part No : 40020756

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Meta Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Customer Reviews

Be the first to write a review

Mastervolt 24/75, 75A, 24V Battery Charger - 40020756

$2,409.99 $3,318.27
24/75, 75A, 24V Battery ChargerThe right choice for demanding conditionsMass battery chargers are designed for the toughest conditions for professional,...
View product