Mastervolt ChargeMaster Plus 24/40-3
40 A, 24VCharging current (max)2
Product details
The Mastervolt ChargeMaster Plus Battery Charger 24/40-3 is a professional battery charger designed for marine and recreational vehicle applications. This three-stage charger delivers 40 amps at 24 volts, allowing for efficient charging of lead-acid, gel, and AGM batteries commonly used in boats, yachts, and motorhomes. With dimensions of approximately 300 mm in width, 200 mm in height, and 100 mm in depth, and a weight of around 3.5 kg, this compact unit features a robust design with a waterproof housing rated IP65, making it suitable for harsh marine environments. The charger integrates advanced microprocessor control technology that automatically adjusts charging parameters based on the battery's condition, ensuring optimal charging cycles while preventing overcharging. It operates with an input voltage range of 180-265 V AC and maintains high efficiency with minimal energy loss during operation. The device includes temperature compensation functionality, which adjusts the charging voltage according to fluctuations in ambient temperature, thereby extending battery life. Constructed with high-quality components and equipped with comprehensive protection circuits against short circuits, reverse polarity, and overheating, this charger offers reliable performance under demanding conditions. The successor to earlier ChargeMaster versions, it includes enhanced safety features and improved charging algorithms for better battery maintenance. Suitable for professional marine applications and recreational boating, this charger represents Mastervolt's commitment to durable, high-performance marine electrical equipment.
Vehicle | Boat, Caravan |
Suitable battery technology | AGM, Lead Acid Gel |
Charging current (max) | 40 A |
Charging voltage | 24V |
Safety function | Overheating, Reverse polarity, Short circuit |
Item number | 58073284 |
Manufacturer | Mastervolt |
Category | Car battery chargers |
Manufacturer No. | 44320405 |
Release date | 29.4.2025 |
Vehicle | Boat, Caravan |
Suitable battery technology | AGM, Lead Acid Gel |
Charging current (max) | 40 A |
Charging current at 24V | 40 A |
Power supply | Electrical connection |
Charging voltage | 24V |
Input voltage | 180 - 265 V |
Protection type (IP code) | IP65 |
Safety function | Overheating, Reverse polarity, Short circuit |
Scope of delivery | Manual |
Length | 30 cm |
Width | 20 cm |
Height | 10 cm |
Weight | 3500 g |
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Reviews & Ratings
Warranty score
How often does a product of this brand in the «Car battery chargers» category have a defect within the first 24 months?
Source: Digitec Galaxus- MastervoltNot enough data
- 1.Bosch Automotive0.4 %
- 1.Ctek0.4 %
- 1.Tecmate0.4 %
- 4.Dino0.5 %
Warranty case duration
How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: Digitec Galaxus- MastervoltNot enough data
- 1.Einhell0 days
- 2.Noco1 day
- 3.Ctek2 days
- 4.Victron Energy4 days
Return rate
How often is a product of this brand in the «Car battery chargers» category returned?
Source: Digitec Galaxus- MastervoltNot enough data
- 1.Kraftmax0.6 %
- 2.Tecmate1 %
- 3.Ctek1.4 %
- 4.AEG1.8 %