Mastervolt Chargemaster 20a 24v Output 120-230v Input
SKU: 53870227973

Mastervolt Chargemaster 20a 24v Output 120-230v Input

$280.92 $312.13
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Description

Mastervolt Chargemaster 20a 24v Output 120-230v InputMastervolt ChargeMaster 24 20 3 Battery Charger Model: 44020200 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 24/20-3 Battery Charger

Model: 44020200
  • 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 20A
Number of battery outlets 3
Nominal output voltage 24V
Charge current second output 20A
Charge current third output 20A
Battery capacity range 40-200Ah
Nominal input voltage 120/230 V (90-265 V), 50/60 Hz
AC connection Connector strips
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) < 2.5 mA
Full load consumption (230 V AC) 660W
Current Control function yes, through MasterBus
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 11.5 x 8.3 x 5.2 inch

What's in the Box:
  • ChargeMaster 24/20-3
  • Mounting bracket to mount the ChargeMaster to a wall
  • 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: 53870227973

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4.6 ★★★★★
Based on 1187 reviews
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B
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Brandi
Carnegie, US
★★★★★ 5
My FAVORITE Bra!
Size: 44F, Color: Black
These are my FAVORITE bras!! They hold everything in and there is no spillage out of the cups! I own many of these and have yet to be disappointed. I like that they don't cost and arm and a leg either!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
J
Verified Purchase
Jenn T.
Houston, US
★★★★★ 4
Decent low-profile bra, but with caveats for larger chests
First, I had to return the bra three times because the size charts on the manufacturer's website are laughably wrong. By measurement, it had me at a DD. Lo and behold, I was an H. So ignore those size charts, and go off the standard US ones for bras. The band sizes are also near the US standard, but about one standard deviation too small. I'm normally a 36, but I had to buy a 38 in this. The website had me at a 34DD, which was absurd. You should have seen the look on my face when it came and I knew instantly it wouldn't fit. The 38H did, though. I'm typically a 36-38 or H/I/J in most brands. So the pros. This is a great bra if you want to get rid of lines. I have a lot of professional silk blouses, and I can't wear ANY lace underneath them or you can see it. This comes in a lot of neutral colors, too, which is great for those purposes. The shoulder straps are really chunky, which makes it hard to hide in tanks, but it's very comfortable in all other styles of tops. The back strap is quite firm for a bra in this price range, so that the majority of the support is from there, not the shoulder straps. The bra (once I got the right size) actually tacks in the middle, which is rare for me unless I spend over $50 on a bra. I'm also not getting unattractive areas of fat accumulation that happens when your bra doesn't fit and pushes breast tissue out of where it should be. This was important to me, because I want to eliminate lines, and nothing points out where your bra straps are like a small fat roll right under your bra band. The cons don't outweigh the pros, but you should be aware of them. First, the cups are very full-coverage. Anything past a moderate scoop neck will show the bra. I prefer a little less coverage so I can wear mandarin collars. Second, the cups don't have any support outside of the band, shoulder straps, and underwire. If you want your chest to sit high and tight, you're going to have to spend more. It certainly uplifts more than going without a bra, but for larger chests, you're still going to droop a bit more than a bra with firmer cups. This isn't a problem for me with looser and more professional blouses, but I don't like how it makes me look a bit "sloppier" in tighter shirts. For a bra that was $50+ dollars, the cons would make me not purchase it again. But I paid $26 for this, so the cons are quite reasonable for price point, given that I do have a large chest that makes bra shopping quite the chore. It fits the bill for the task of the type of shirts I needed it for. But if you're a full-chested person and want a bra that will work for nearly everything, you're going to need to look elsewhere and spend more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 25, 2021
T
Verified Purchase
Tom and kiki
Battle Creek, US
★★★★★ 5
Finally a bra that fits!
Size: 38G, Color: Black
This is my first time wearing this bra, and right away I can tell it’s the best fit I’ve ever had. I wear a 38G, and the support is incredible without feeling tight or uncomfortable. The band sits snug (on the first set of hooks—yes!) and doesn’t dig into my skin. The cups give full coverage without spillage, and the lift is exactly what I needed. So far, I’m very happy with how it feels under clothes, and I actually feel supported and comfortable. I will update this review after two weeks of wear to let you know how it holds up.
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Reviewed in the United States on July 16, 2025
A
Verified Purchase
Autumn
Chelsea, US
★★★★★ 3
Not durable
I love the initial fit and feel of this bra. Its very comfortable and silky. I was disappointed to discover the poor design which allows the underwire to poke through much too quickly. It happened on both of my bras from this company. I bought 2 hoping the first was just defective but the second had the same issue in the same area.
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Reviewed in the United States on November 8, 2023
J
Verified Purchase
JRB3
New York, US
★★★★★ 5
Great coverage for a chesty gal with smaller band size
Size: 34F, Color: Gentle Rose
I don’t know why I can find bras that fit better on Amazon than in store, but this one is a good one. It fits well and is as comfy as you can expect from an underwire. It has zero lining and that can be an issue, so pay attention to that if it is important to you for the nip coverage!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2025

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