SKU: 30733919772

Mastervolt Chargemaster 12a 24v Output 120-230v Input

Sale price$286.92 Regular price$318.80
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Description

Mastervolt Chargemaster 12a 24v Output 120-230v InputMastervolt ChargeMaster 24 12 3 Battery Charger Model: 44020120 3 Step+ charging technology for fast and complete charging. Safe and complete charging due to standard safety features. Memory function prevents overcharging in case of an unstable power supply. Clear control panel. Easy to install Built in system functionality (MasterBus) in combination with other Mastervolt products Make the most of your batteries with the ChargeMaster, plugging in and

Mastervolt ChargeMaster 24/12-3 Battery Charger

Model: 44020120
  • 3-Step+ charging technology for fast and complete charging.
  • Safe and complete charging due to standard safety features.
  • Memory function prevents overcharging in case of an unstable power supply.
  • Clear control panel.
  • Easy to install
  • Built-in system functionality (MasterBus) in combination with other Mastervolt products

Make the most of your batteries with the ChargeMaster, plugging in and charging anywhere in the world. Mastervolt’s ChargeMaster guarantees fast and complete charging of your batteries no matter where you are. The ChargeMaster can charge multiple battery banks simultaneously thanks to its combined functionality. Moreover, all ChargeMasters can be easily connected to a MasterBus network with only one cable and one connection (not available on ChargeMaster 12/10 and ChargeMaster 12/15-2). You also have the option of central, local or remote monitoring, configuration and control of your system. The ChargeMaster is available in various models to guarantee you the ideal battery charger for any situation and demand.

The Mastervolt ChargeMaster supplies a maximum capacity wherever you are via auto-ranging. Auto-ranging ensures perfect fully automatic operation anywhere in the world, regardless of the available mains voltage (90-265 V AC, 50 or 60 Hz). The 3-step+ charging technology guarantees fast and complete charging, while the cos phi 1 regulation gets the most out of limited generator capacity.

Metal-on-metal fitting gives a firm connection, and prevents corrosion or overheating of contact surfaces.

The ChargeMaster series has three equal charge outputs. Those of the smaller ChargeMaster models are pre-installed with two metres of cable for a plug & play solution, while the heavier models have one full output (for example for your service battery) and two outputs of 10 A, ideal for your starter batteries.

Specifications
General Specifications
Total charge current 12A
Number of battery outlets 3
Nominal output voltage 24V
Charge current second output 12A
Charge current third output 12A
Battery capacity range 24-120aH
Nominal input voltage 120/230 V (90-265 V), 50/60 Hz
AC connection 2 mtr AC cable
Power supply mode yes
Display/read-out LED display
Technical specifications
Charge characteristic IUoUo, automatic 3-step+ for gel/AGM/wet/Lithium Ion
Charge voltage Bulk 28.8V
Charge voltage Absorption 28.5V
Absorption time 4 hours
Charge voltage Float (wet batteries) 26.5V
Charge voltage Float (gel/AGM batteries) 27.6V
Voltage compensation Automatic
Power consumption (DC side) < 2 mA
Full load consumption (230 V AC) 435W
Current Control function No
Temperature range (ambient temp.) -25 °C to 60 °C, derating > 40 °C
-13 °F to 140 °F
Protection degree IP23
Cooling vario fan
MasterBus compatible Yes
Dimensions 9.2 x 5.2 x 2.4 inch

What's in the Box:
  • ChargeMaster 24/12-3
  • DC-wiring: 2 pcs. positive (red) and 1 pc. negative (black)
  • MasterBus terminating device
  • Documentation
  • Battery temperature sensor
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 30733919772

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Gerald Walsh
Omaha, US
★★★★★ 2
Futility@futility
Seems rather complicated in the 0% features.
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Reviewed in the United States on May 19, 2026
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kristin r
Waukegan, US
★★★★★ 5
Great Sunscreen
Scent: Pear & Coconut Water
Love that this is a safer version of sunscreen (less chemicals) and it WORKS!!! Good smell, goes on clean and not chalky or white.
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Reviewed in the United States on April 2, 2026
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Amazon Customer
Lexington, US
★★★★★ 5
Great for Sun Allergy Rashes!
Scent: Unscented, Scent: Unscented
I have an autoimmune disease called Sjogren’s Disease. With that, for me, comes a sensitivity to the sun in the form of sun allergy rashes. Also with that, I did a deep dive on the best sunscreens and read a lot of reviews on here. I put some of the outer sides of elbows where my sun allergy rashes were when I received it. There was slight sting, but the skin there was already slightly broken. I really love the texture of it, how it feels on my skin and that there's no white cast. It’s moisturizing, too, with no greasiness. Absorbed really well.
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Reviewed in the United States on June 2, 2026
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Alayna Hildreth
Lexington, US
★★★★★ 5
The best mineral sunscreen
Scent: Unscented
I’m so impressed by this sunscreen! I’ve been using mineral sunscreens for years and this blows every other one I’ve tried out of the water. It is silky smooth and applies so easily, absorbs well and doesn’t feel greasy or heavy. It doesn’t leave a white cast but it still protects very well! Of course like any sunscreen it’s only as effective as your usage, so reapplying is paramount. The unscented truly has no smell to it, which is something I appreciate. Using it for the first time, neither myself or my fair kiddos got sunburnt. It’s just all around a fantastic, clean mineral sunscreen and will be my go to from now on!
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Reviewed in the United States on May 20, 2026
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Taylor Rose
Whiting, US
★★★★★ 5
Wellness Staple for Sensitive Skin
Scent: Pear & Coconut Water, Scent: Pear & Coconut Water
I’m becoming much more intentional about the products I use on and around my body, especially while traveling, and this sunscreen ended up being one of the best things we packed for our girls trip to Mexico. My friend has extremely sensitive skin and typically reacts to a lot of sunscreens, so we wanted something mineral-based, reef safe, and more wellness-conscious overall. We split one bottle between the two of us over about five days, and honestly it held up really well. It felt lightweight for a mineral sunscreen, blended in better than expected, and didn’t leave our skin feeling greasy or irritated in the heat. Most importantly, neither of us experienced sensitivity issues or breakouts during the trip. I also appreciated the peace of mind of using something reef safe while spending so much time in the ocean. It’s one of those products that aligns well with a more mindful, health-focused lifestyle without sacrificing effectiveness.
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Reviewed in the United States on May 13, 2026

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