SKU: 19894977427

Mastervolt Chargemaster 25a 12v Output 120-230v Input

$212.37 $235.97
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Description

Mastervolt Chargemaster 25a 12v Output 120-230v Inputmastervolt ChargeMaster 12 25 3 Battery Charger Model: 44010250 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 (not available on ChargeMaster 12 10 and ChargeMaster 12 15 2). Make

mastervolt ChargeMaster 12/25-3 Battery Charger

Model: 44010250
  • 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 (not available on ChargeMaster 12/10 and ChargeMaster 12/15-2).

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 25A
Number of battery outlets 3
Nominal output voltage 12V
Charge current second output 25A
Charge current third output 25A
Battery capacity range 50-250ah
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 14.4V
Charge voltage Absorption 14.25V
Absorption time 4 hours
Charge voltage Float (wet batteries) 13.25V
Charge voltage Float (gel/AGM batteries) 13.8V
Voltage compensation Automatic
Power consumption (DC side) < 2 mA
Full load consumption (230 V AC) 450 W
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 12/25-3
  • DC-wiring: 2 pcs. positive (red) and 1 pc. negative (black
  • MasterBus terminating device
  • Documentation
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: 19894977427

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4.4 ★★★★★
Based on 7 reviews
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Product Reviews
C
Verified Purchase
Charlston T. Ang
Bozeman, US
★★★★★ 5
Amazingly Comfortable — Like Sleeping in a Luxury Hotel Every Night
Color: White, Size: Queen(Pack of 2)
I rarely write reviews, but these Serta Hotel Collection pillows absolutely deserve one. From the very first night, they felt incredibly comfortable — soft yet supportive in all the right places. I tend to switch between back and side sleeping, and these pillows adjusted perfectly no matter my position. The 400-thread count cotton cover feels smooth and luxurious, and the gusseted edges give just the right amount of lift without feeling stiff. What really surprised me was how easy it was to adjust to them. Usually, it takes a few nights to get used to a new pillow, but I slept soundly from day one — no neck aches, no tossing and turning. They have that “hotel bed” feel — plush, breathable, and restful. Every morning, I wake up feeling like I stayed at a high-end resort. For the quality, comfort, and price, this set is an absolute win. Highly recommend to anyone looking to upgrade their sleep!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
A
Verified Purchase
AW
Alexandria, US
★★★★★ 4
Amazing pillows!
Color: White, Size: Queen(Pack of 2)
These are fantastic pillows! A little background. I'm a side sleeper and toss and turn throughout the night. I've struggled with sleep issues for literally decades - insomnia, tossing and turning, waking up multiple times a night to use the bathroom, waking up way too early and not being able to get back to sleep. Every night it's a combo of those things or all of those things. I've also had some neck pain and stiffness for a couple of months. If you've ever dealt with that you know it will affect sleep which will then affect productivity and mood. It's a terrible spiraling and compounding thing to deal with, very stressful. I figured the contour pillow I had which once was actually helping was unfortunately the culprit. So I went on the hunt for another pillow. I ordered what I thought was the old Rejuvenite pillow (those were fabulous!) and got burned on a bait and switch. The pillow ended up being way too soft and gave me worse neck pain. Figuring I'd try to salvage what was a $115 pillow, I invested in a very thin pillow to put underneath. It was too high. Getting pretty frustrated, I ordered the cheaper Utopia pillows here on Amazon. Those actually were not terrible because they did take away my neck pain, but I was still tossing and turning at night and still feeling unrested in the morning. I decided I'd give it one last shot and luckily found these when they were discounted by a few bucks. They didn't have many reviews which was actually a great sign for me because it means the company lets their product speak for itself. I got these in several days and was thrilled to see upon opening the package that they were sealed and the directions do not require you to open the package and let them expand for 24 hours. You literally just take the edges and fluff 2-3 times and that's it! They are ready to go and they definitely do feel perfect after doing that. I was skeptical when I put them on my bed because they are soft and I worried they'd be too soft. I felt my head sink into the pillow a bit and then was surprised to feel at a certain point it just feels like the pillow is cradling your head with the right amount of support. I wouldn't describe it as firm, just soft but stable support. Really comfortable. But the real test was how it would perform during sleep. I'm so thrilled to report that I had an amazing night of sleep! No neck pain, no stiffness, zero tossing and turning, no insomnia, no waking up during the middle of the night, and no waking up early. I put my head down, fell asleep, and slept like a log for about 7.5 hours straight, which is literally unheard of in my world. I'm very lucky if I get 5 solid hours of sleep. I woke up and popped out of bed. My mood was great (still is later in the day) and I was not tired in the afternoon when I normally feel the fatigue kicking in. This is the first day for as long as I can remember that I do not feel that nagging tiredness behind my eyes and in my body that always seems to be a steady background actor in my life. I feel great and full of energy and I was able to tackle a bunch of tasks on my someday list. This is so promising I didn't want to wait to share. If you are on the fence and are dealing with similar issues to mine, I'd encourage you to just try these. What's also amazing is these come in a set. I'm only using one so I basically have another one to use if the first one ever fails. This is the best investment for sleep I've ever made! Update: Well, after a trial period I'm removing a star because my dreamy sleep was short lived. I started to wake up more frequently during the night with these and gave up midway through the night one night. I'm still using these for back support while I sit up or hang out in bed because they are still super comfortable that way and oddly these work well for naps. Hopefully, you have better luck than me!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
A
Verified Purchase
Ana Barbara guerra
Phoenix, US
★★★★★ 5
Actually feels like a hotel stay
Color: White, Size: Queen(Pack of 2), Color: White, Size: Queen(Pack of 2)
I've been looking for that specific hotel feel without spending a fortune, and these Serta pillows nailed it. They are categorized as medium-firm, which I find perfect, they have that initial plush softness when you lay down, but they don't flatten out completely by morning. The 400-thread-count cotton cover feels high quality and breathable, so I haven't dealt with any overheating. I'm a side sleeper and my husband sleeps on his back, and we both find them super comfortable. If you want a pillow that balances support with that cloud like luxury these are a great pick.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
P
Verified Purchase
Paige
Cuba, US
★★★★★ 3
Decent
Color: White, Size: Queen(Pack of 2)
They are only used as a backup pillow for my special pillows I use since I have pillows with holes in the middle for my earrings. I also use them for when I lean on my headboard to watch tv. I like them they are squishy. Kind of expensive I feel like but not terrible
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
F
Verified Purchase
Fredy gonzalez
Boise, US
★★★★★ 5
I love these pillows
Color: White, Size: Queen(Pack of 2)
Very good pillows, comfortable and with that hotel style. They have medium firmness, so they work well for any sleeping position. They feel fresh, of good quality and do not crush easily. Excellent purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026

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