ProMariner ProSport HD 20

Last updated: November 2, 2026

ProMariner ProSport HD 20
3.5/5#6 of 16 in 1 and 2 bank marine chargers
3.5

For a boat with a starting battery and a big 12 V trolling or house battery, where shared current gets the drained battery full fastest.

  • 20 A totalOutput
  • 20 ATotal current
  • YesLithium mode
  • IP67Water rating
Check price at Amazon$249.99

Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Distributed-On-Demand sends a full starting battery’s unused amps to the drained trolling battery, so it finishes sooner
  • IP67 case built to ABYC A-31 with ignition protection
  • LiFePO4, AGM, gel and flooded profiles
  • 20 A total refills a pair or trio of deep cycle batteries overnight
Cons
  • Lithium mode only covers ProMariner approved batteries
  • Charge gauge shows overall progress, not each battery’s level
  • 3 year warranty, against 5 on ProMariner’s own ProTournament line

The ProMariner ProSport HD family

Every ProMariner ProSport HD model we rank, smallest first. Ratings compare each against its own bank count.

ModelOutputRatingPrice
ProMariner ProSport HD 61 x 6 A2.8/5$135.99
ProMariner ProSport HD 88 A total2.9/5$169.99
ProMariner ProSport HD 122 x 6 A3.2/5$201.30
ProMariner ProSport HD 20 (this one)20 A total3.5/5$249.99
ProMariner ProSport HD 20 Plus20 A total3.3/5$255.63

How it scores

The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its bank count. How we rank explains each one.

Specifications

Model number44020
Charging
Banks2
Total current20 A
Lithium modeYes
AGM modeYes
Build
Water ratingIP67
Display or appNo
Ignition protectedYes
Weight7.2 lb
Warranty3 years
Released2021-01-25

Alternatives in this bank count

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