SKU: 21421897736

Mastervolt ChargeMaster Plus 24/20-3 Battery Charger [44320205]

Sale price$403.65 Regular price$448.50
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Description

Mastervolt ChargeMaster Plus 24/20-3 Battery Charger [44320205]ChargeMaster Plus 24 20 3 Battery Charger Make the most of your batteries with the ChargeMaster series, plugging in and charging anywhere in the world. Mastervolts ChargeMaster guarantees fast and complete charging of your batteries no matter where you are. Thanks to Mastervolts innovative 3 step+ charging process, batteries also perform better and last longer. All ChargeMasters can be easily connected to a MasterBus network with only one cable and

ChargeMaster Plus 24/20-3 Battery Charger

Make the most of your batteries with the ChargeMaster series, plugging in and charging anywhere in the world. Mastervolt’s ChargeMaster guarantees fast and complete charging of your batteries no matter where you are. Thanks to Mastervolt’s innovative 3-step+ charging process, batteries also perform better and last longer.

All ChargeMasters can be easily connected to a MasterBus network with only one cable and one connection (with the exception of the ChargeMaster 12/10, ChargeMaster 12/15-2, and ChargeMaster 24/6). What’s more, you have the option for central, local, or remote monitoring, configuration, and control of your system.

Clear Display

A clearly lit display on the ChargeMaster provides all essential information: charge current, charge voltage, charge phase, and battery content measurement and/or battery condition measurement as a percentage of available Ah capacity. The display also provides an indication of MasterBus communication. Three buttons adjacent to the read-out panel allow for easy operating of the entire system. 

The ChargeMaster is available in various models to guarantee you the ideal battery charger for any situation and demand.

Features:

  • For recreational and semi-professional use.
  • Suitable for any type of battery, including Lithium-Ion batteries.
  • 3-Step+ charging technology for fast and complete charging also charges depleted batteries.
  • Memory function prevents overcharging in case of unreliable mains.
  • Safe and complete charging due to standard safety features.
  • Charging capacity up to 1000 Ah battery banks.
  • Easy to connect and quick to install.
  • Can charge multiple battery banks simultaneously.
  • Built-in system functionality (MasterBus) in combination with other Mastervolt products.
  • Clear control panel (with the exception of the ChargeMaster 12/10, ChargeMaster 12/15-2, and ChargeMaster 24/6).
  • Supplies your system without a battery.

Charging your batteries with every voltage

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.

Robust Connections 

Solid metal-to-metal connectors equipped with strain relief prevent corrosion and overheating.

Charging multiple battery banks

The ChargeMaster series has three equal charge outputs. Those of the smaller ChargeMaster models are pre-installed with two meters 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.

DC Power Supply

Even if the batteries are not connected, Mastervolt ChargeMaster battery chargers can provide a constant DC output allowing you to turn on lights or keep the fridge cold.

Specifications:

  • Nominal output voltage: 24 V
  • Total charge current: 20 A at 28.8 V
  • Number of battery outlets: 3
  • Charge current second output: 20 A
  • Charge current third output: 20 A
  • Battery bank size: 40-200 Ah
  • Nominal input voltage: 120/230 V (90-265 V), 50/60 Hz
  • AC connection: Connector strips
  • Power supply mode: Yes
  • Galvanic isolation: Yes
  • Display/read-out: LED display

Specifications:

  • Charger Input - Voltage: 120/230v
  • Charger Output - Amps: 20a
  • Charger Output Voltage: 24v
  • Charging Banks: 3
  • Portable: No
  • Box Dimensions: 6"H x 12"W x 16"L WT: 9 lbs
  • UPC: 816882022890

Owner's Manual (pdf)
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: 21421897736

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4.5 ★★★★★
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Patricia Hurt
Lexington, US
★★★★★ 5
Summer perfect! Soft and light
Color: White, Size: Twin
I bought 3. As soon as I opened the bag there was an odor to them. They didn’t feel like made with natural products. I washed them & when they came out of the dryer they smelled good & are so soft. I will order other colors.
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Reviewed in the United States on April 8, 2026
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Brandon Gabriel
Waukegan, US
★★★★★ 2
Impossible to keep clean
Color: White, Size: Queen, Color: White, Size: Queen
Great blanket. How TF are you supposed to keep it clean? They provide garment bag, but my zipper broke before I could even use it. I had one of these before and my ex lost the bag, so I had no idea it even came with one. These rip and get burned in the dryer. DON’T WASTE YOUR MONEY
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Reviewed in the United States on May 10, 2026
L
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Lisa
Whiting, US
★★★★★ 5
Soft and perfect for warmer days
Color: White, Size: Queen, Color: White, Size: Queen
Soft and I love the waffle design just get it perfect for warmer days. It’s not too light therefore still gives some warmth.
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Reviewed in the United States on March 5, 2026
N
Noble1Uncle
Charlottesville, US
★★★★★ 4
Element of its stitched pattern may matter to some.
Color: Light Grey, Size: Queen (90" x 90"), Color: Light Grey, Size: Queen (90" x 90")
The blanket color was as expected, its fabric I believe will keep you warm, and no material odd scents which is good. Not a flaw, but what might matter to some, at least for me, is that in its stitched pattern it has a repeated section that has loose threading. I noted close up of that in my photos. I can see that element of the blanket being something that may snag on things sometimes over time from items you might set on this bed blanket. Nothing to cut much of a rating on but I wouldn’t of wanted this blanket due to that if I saw that design feature up close beforehand.
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Reviewed in the United States on June 1, 2026
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KB
Boise, US
★★★★★ 5
🛌 Ultimate Lightweight Summer Comfort!
Color: Pure White, Size: King (104" x 90")
🧶 Beautiful and Soft Waffle TextureThe 100% cotton construction offers a wonderfully soft, textured feel that adds a touch of classic elegance to the bedroom. It feels exceptionally gentle against the skin and provides the perfect amount of cozy texture without any scratchiness. 🍃 Exceptional Breathability and WeightThe lightweight waffle weave allows for maximum airflow, making it absolutely perfect for hot sleepers and warm summer nights. It keeps the body comfortably cool while still providing that comforting weight of a real bed blanket. 📐 Generous and True King Size FitDraping beautifully over a large king-size bed, the dimensions provide excellent coverage on all sides without pulling or shifting. It acts as an ideal standalone layer for the summer or a sleek layering piece under a comforter during cooler months.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026

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