NOCO Genius GEN5X2
#5 in 1 and 2 bankFull review
A low cost two bank charger for a skiff or jon boat with a starting battery and one trolling or house battery, including lithium. Its 5 A banks suit modest batteries best.
Amazon $139.95$139.95
The NOCO Genius GEN5X2 is the better onboard marine battery charger overall, rated 3.7 to 3.5. The NOCO Genius GEN5X2 leads on features. The ProMariner ProSport HD 20 wins on charge current. The NOCO Genius GEN5X2 costs $110.04 less ($139.95 vs $249.99).
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
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the NOCO Genius GEN5X2 for features (lithium mode, IP67 or better, temperature compensation, charge display or app vs lithium mode, IP67 or better).
- Choose the ProMariner ProSport HD 20 for charge current (20 A total vs 10 A total (2 banks of 5 A)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 1 and 2 bank onboard marine battery charger; a clear win is highlighted. How we rank explains each one.
| Factor weight | NOCO Genius GEN5X2 | ProMariner ProSport HD 20 |
|---|---|---|
| Overall rating | 3.7/5 | 3.5/5 |
| Value 30% | 65 $13.99 per amp ($139.95, 10 A total) | 72 $12.50 per amp ($249.99, 20 A total) |
| Charge current 15% | 17 10 A total (2 banks of 5 A) | 58 20 A total |
| Features 25% | 100 lithium mode, IP67 or better, temperature compensation, charge display or app | 50 lithium mode, IP67 or better |
| Warranty 30% | 50 3-year warranty | 50 3-year warranty |
Specifications
| NOCO Genius GEN5X2 | ProMariner ProSport HD 20 | |
|---|---|---|
| Charging | ||
| Banks | 2 | 2 |
| Current per bank | 5 A | - |
| Total current | 10 A | 20 A |
| Lithium mode | Yes | Yes |
| AGM mode | Yes | Yes |
| Temperature compensation | Yes | - |
| Build | ||
| Water rating | IP68 | IP67 |
| Display or app | Yes | No |
| Ignition protected | Yes | Yes |
| Weight | 4.2 lb | 7.2 lb |
| Warranty | 3 years | 3 years |
| Released | 2020-08-17 | 2021-01-25 |