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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bill nickel
Lowell, US
★★★★★ 5
Easy
Size: Twin
Easy to assemble and very sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
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Tiarra Samar
Natrona Heights, US
★★★★★ 5
Engineered PERFECTLY!!!
Size: Queen, Style: With Headbroad
So the reviews are pretty accurate, this bed is UGLY!!! A bright ugly orange hahaha! BUUUUUUUT, if color is not an issue for you (like it wasn’t for me), THIS BED IS SOLID!!! Solid wood, solid build, solid product!!! Also I want to add that the way it’s designed, it’s very hard to mess up when building. They engineered this bed that all pieces fit perfectly together when the correct pieces are placed in the correct spots. If the holes are off, switch the pieces around until the holes match perfectly! I am in love with this bed!!!
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Reviewed in the United States on April 4, 2026
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Bryan B
Dallas, US
★★★★★ 5
Great bed frame solid wood
Size: Queen, Style: With Headbroad
I read other reviews about this product and someone said that it was sort of orange in color and yes it was I might try and stain the wood a different color not sure but it still looks okay I am not sure if I follow the directions correctly I installed the head board with the hardware showing from the front but I switched it to the back and it looks much better now great value seems well built easy to put together the only problem I had was with the sides I had them switched the boards that are attached go to the top not the bottom other than that it went easy to follow the directions
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Reviewed in the United States on February 16, 2026
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Kari
Omaha, US
★★★★★ 1
Too good to be true
Size: King, Style: With Headbroad
Very orange, wish i would’ve read the reviews better. The two cross bars are too long so we had to drill our own holes into 2 of the 14 and make it work, one if the feet didnt have threads and i’m pretty sure when my mattress arrives it’ll hang over the bed.
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Reviewed in the United States on March 12, 2025
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Deepika
Massapequa, US
★★★★★ 5
Sturdy Big Kid Bed
Size: Twin, Style: With Headbroad
My son loves his new bed! He is in this "big kid" bed now and he has adjusted well. I built this with my husband and the instructions are easy to follow. It helps to have a power drill to drill the screws in quickly for the platform. The bed is very sturdy and stable and has a very classic look to it.
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Reviewed in the United States on February 10, 2026

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