ProMariner ProSport HD 20
#6 in 1 and 2 bankFull review
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.
Amazon $249.99$249.99
3.5/5
A cheap way to keep a single starting or trolling battery topped up aboard a small boat. Buy a bigger charger for a deep cycle bank you drain every trip.
- 1 x 5 AOutput
- 5 ATotal current
- YesLithium mode
- IP68Water rating
Check price at Amazon$79.95
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Small and light enough to fit under a console or in a tight hull compartment
- A lithium mode on every bank, so LiFePO4 trolling motor batteries can share the charger with a lead acid starting battery
- Per bank 25 to 100% charge lights show how far along each battery is without a meter
- IP68 sealed and mountable in any orientation, even upside down
Cons
- 5 A per bank is slow for big deep cycle batteries; the maker rates it for batteries up to 120 Ah
- Only a 3 year warranty, where the best rivals give 5
- A single bank only covers one battery; a boat with a starting and a house battery needs two banks
The NOCO Genius GEN5X family
Every NOCO Genius GEN5X model we rank, smallest first. Ratings compare each against its own bank count.
| Model | Output | Rating | Price |
|---|---|---|---|
| NOCO Genius GEN5X1 (this one) | 1 x 5 A | 3.5/5 | $79.95 |
| NOCO Genius GEN5X2 | 2 x 5 A | 3.7/5 | $139.95 |
| NOCO Genius GEN5X3 | 3 x 5 A | 3.6/5 | $199.95 |
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 number | GEN5X1 |
|---|---|
| Charging | |
| Banks | 1 |
| Current per bank | 5 A |
| Total current | 5 A |
| Lithium mode | Yes |
| AGM mode | Yes |
| Temperature compensation | Yes |
| Build | |
| Water rating | IP68 |
| Display or app | Yes |
| Ignition protected | Yes |
| Weight | 1.9 lb |
| Warranty | 3 years |
| Released | 2020-08-17 |
Alternatives in this bank count
Minn Kota MK-110PCL
#7 in 1 and 2 bankFull review
A lithium ready single bank charger for one 12 V trolling motor or house battery on a small boat, with enough current for an overnight refill.
Amazon $125.33$125.33
Minn Kota MK-212PCL
#9 in 1 and 2 bankFull review
For a small boat with a starting battery and a 12 V trolling battery of modest size, with lithium support on both banks.
Amazon $171.94$171.94
Compare
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