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Promariner 43021 Battery Charger Prosport 20 Amp - 3 Bank

4.6 out of 5 stars 759 ratings
Amazon's Choice recommends highly rated and well-priced products.
Amazon's Choice for "3 bank marine battery charger"

Price: $164.07 & FREE Shipping. Details & FREE Returns
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Available at a lower price from other sellers that may not offer free Prime shipping.
Color Black/Yellow
Brand ProMariner
Voltage 36 Volts
Item Dimensions LxWxH 14.5 x 6 x 8.5 inches
Item Weight 8 Pounds

About this item

    This fits your .
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  • 2 Year Warranty
  • Built-in Quality and Safety
  • Energy Saver Mode
  • Digital Multi-Stage Performance Charging
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New (11) from $159.99 + FREE Shipping

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Unlimited data on a limited budget, iPhone and wireless plans presented by Amazon Unlimited data on a limited budget, iPhone and wireless plans presented by Amazon


Frequently bought together

  • Promariner 43021 Battery Charger Prosport 20 Amp - 3 Bank
  • +
  • YOUNG MARINE Circuit Breaker for Boat Trolling with Manual Reset,Water Proof,12V- 48V DC
  • +
  • Seachoice Battery Tray with Hold Down Strap Group
Total price: $196.33
Buy the selected items together

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Price $164.07 $405.79 $506.09 $439.69 $29.77
Shipping FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details
Sold By Amazon.com Amazon.com Amazon.com Amazon.com Amazon.com

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Technical Details

Technical Specification

User Manual [PDF ]

Additional Information

Warranty & Support

Product Warranty: For warranty information about this product, please click here. [PDF ] Spanish (Mexico) 771770 [PDF 2.46 MB]

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Product description

Professional Mariner was founded over 35 years ago with one premise; to make boating more enjoyable! We pioneered a robust line of fully automatic, on-board marine battery chargers that provided the marine industry with a mainstream method of charging batteries in a short time without the need for storing or carrying portable battery chargers on-board. We haven’t looked back since.


From the manufacturer

ProTournament240 Elite Dual ProTournament240 Elite Triple ProTournament360 Elite Dual ProTournament360 Elite Triple ProTournament360 Elite Quad
Voltage 12/24V 12/24/36V 12/24V 12/24/36V 12/24/36/48V
Amps 24 Amps 24 Amps 36 Amps 36 Amps 36 Amps
Number of Batteries 2 3 2 3 4
Battery Type Flooded, AGM, HP AGM Flooded, AGM, HP AGM Flooded, AGM, HP AGM Flooded, AGM, HP AGM Flooded, AGM, HP AGM
ProSport 6 ProSport 12 ProSport 20 ProSport 20 Plus
Voltage 12V 12/24V 12/24V 12/24/36V
Amps 6 Amps 12 Amps 20 Amps 20 Amps
Number of Batteries 1 2 2 3
Battery Type Flooded, Gel, AGM Flooded, Gel, AGM Flooded, Gel, AGM, HP AGM* Flooded, Gel, AGM
ProMar1 5 ProMar1 5/5 ProMar1 5/5/3
Voltage 12V 12/24V 12/24+ENG
Amps 5 Amps 10 Amps 13 Amps
Number of Batteries 1 2 3
Battery Type Flooded, Gel Flooded, Gel Flooded, Gel

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