ProMariner 44021 ProSport HD Waterproof Marine Battery Charger, 20 Amp, 3 Bank
Condition: New
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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Tuesday, Aug 12
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Pattern Name: Charger
Style: 12/24/36V, 20 Amp, 3 Bank
Features
- ProSport HD 20A Triple Bank Waterproof Marine Battery Charger (Part Number 44021) replaces the old ProMariner Gen 3 ProSport 20 plus (part number 43021)
- ProMar Digital Technology: Microprocessor and software controlled charging technology for fast, precise charging
- Distributed-On-Demand Technology: 100% of all available charging amps are utilized by distributing unused charging amps to any one or combination of all batteries as needed
- Heavy Duty Tri-Surface Extruded Heat Sink Design: Upper, lower and rear facing heat sink design for optimal cooling while delivering true rated constant current charging amps during its two charge mode
- Expanded LED Display with Completion Status Gauge: LED fuel gauge style completion status. Four color multi-stage mode LED status bar. Multi-stage Charge Mode, System Check OK, individual Battery Status and Battery Type indication
Description
The new ProSport HD features a lightweight, tri-surface heatsink design. This delivers significantly faster charging through optimal cooling, while delivering true rated constant current charging amps during charge mode. Fully automatic multi-stage charging enhances battery performance while extending battery life.
Brand: ProMariner
Color: Unspecified
Product Dimensions: 8.7"D x 16.4"W x 6.3"H
Item Weight: 7.2 Pounds
Output Voltage: 36 Volts (DC)
Product Dimensions: 16.4 x 8.7 x 6.3 inches
Item Weight: 7.2 pounds
Item model number: 44021
Batteries: 1 Unknown batteries required.
Date First Available: November 22, 2019
Department: Unisex-Adult
Manufacturer: ProMariner
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Aug 12
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Pattern Name: Charger
Style: 12/24/36V, 20 Amp, 3 Bank
Have had this installed on my prov for over 5 years and it has worked flawlessly. Plug it in and always now you are going to have fresh batteries when I hit the water. I also live in a climate were-20f is common in the winter, I leave my batteries in my boat plugged in during the winter and this unit keeps my gel batteries in great shape all winter
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Reviewed in the United States on January 25, 2025 by Kbolt
Pattern Name: Charger
Style: 12/24/36V, 20 Amp, 3 Bank
I bought this unit in May of 2022. This unit was used to maintain two batteries to a trolling motor and one battery for the boat gas motor. After a year and a half of use, one of the 3 banks stopped maintaining/working. I went on Promariners website and followed directions for a warranty claim. It is warranted for three years. I forwarded them a copy of my Amazon receipt along with a picture of the serial number. Within about 24 hours they said they were shipping me a new unit. As long as a company stands behind their product when there is a problem, I will stand behind that company and support their product. I did install the new unit this past weekend (3/30/24) and it is working perfectly. I will add that the unit was very easy to install.
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Reviewed in the United States on April 2, 2024 by Tom T Tom T
Pattern Name: Charger
Style: 12/24/36V, 20 Amp, 3 Bank
These ProSport chargers are the best. This is the third unit I’ve had on as many boats. I maintain three batteries wired for one 12-volt circuit and one 24-volt circuit. Not only are my systems always charged, keeping the batteries fully charged and not allowed to discharge to a critical level has extends their life. Just as important is the customer service. Every time I contacted them, I received a response in 24 hours and had my issue solved in a quick friendly manner. Go for it, you won’t be sorry!
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Reviewed in the United States on September 21, 2024 by Bob411 Bob411
Pattern Name: Charger
Style: 12/24/36V, 20 Amp, 3 Bank
works great so far. maintains all 3 batteries
Reviewed in the United States on August 12, 2024 by shortstuff
Pattern Name: Charger
Style: 12/24/36V, 20 Amp, 3 Bank
This charger is exactly what I needed to replace its previous model. Although it’s slightly larger than the previous model I managed to get it to fit. The new design features and labels make it easy to figure out what battery is charged and ready to use. Build quality is excellent.
Reviewed in the United States on October 11, 2024 by David David
Pattern Name: Charger
Style: 12/24/36V, 20 Amp, 3 Bank
Initial start uu ok. A week or so later (new) batteries were flat. No fault ead on panel. Traced to a loose ground wire on one battery. Seems to me there should have been a panel redout code so indicating (a common problem), would have saved much diagnosis and tracing time!!
Reviewed in the United States on November 18, 2023 by David Lambert
Pattern Name: Charger
Style: 12/24/36V, 20 Amp, 3 Bank
My first one died after 5 years but I had to buy another one. I have 3 batteries and run shore power 24/7.
Reviewed in the United States on December 20, 2024 by Chuck
Pattern Name: Charger
Style: 12/24/36V, 20 Amp, 3 Bank
Had the product installed professionally during a full rewire of my boat and a month later all the batteries were dead, we had the battery charger set to flooded lead but a month later when my electrician came back and check he noticed it had switched to AGM and in the process overcharged and Fried $1000 worth of batteries. We had no idea what caused this so we called pro-mariner support and they said they’ve never heard of this and promised the charger was not at fault and had us set it back to lead acid and install $1000 of new batteries out of my pocket ofcourse and one week later went to use my boat and again all the new batteries were dead, another $1000 loss my electrician came back and saw that the battery charger had switched back to AGM by itself again. We called promariner support again and they rudely refused to help said there charger was not at fault and that to be sure we should bye a new one from them at full price. I’ve used these charges on other boat in years past with no issues but I will never use one again knowing this could happen and the company that makes it doesn’t stand by there products or there customers!
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Reviewed in the United States on April 16, 2024 by eric fornos eric fornos