For a four battery boat that wants a pro grade charger with a charge level monitor and a 5 year warranty, at less than the 36 A model.
Amazon $336.76The ProMariner ProTournament Elite 240 Quad is the better onboard marine battery charger overall, rated 4.2 to 3.3. The ProMariner ProTournament Elite 240 Quad leads on warranty, features and charge current. The ProMariner ProSport HD 20 Plus costs $81.13 less ($255.63 vs $336.76).
For bass boats with a starting battery and a 24 V trolling pair, with ignition protection for gasoline engine bays.
Amazon $255.63Prices 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 ProMariner ProTournament Elite 240 Quad for warranty (5-year warranty vs 3-year warranty), features (lithium mode, IP67 or better, temperature compensation, charge display or app vs lithium mode, IP67 or better) and charge current (24 A total vs 20 A total).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 3 and 4 bank onboard marine battery charger; a clear win is highlighted. How we rank explains each one.
| Factor weight | ProMariner ProTournament Elite 240 Quad | ProMariner ProSport HD 20 Plus |
|---|---|---|
| Overall rating | 4.2/5 | 3.3/5 |
| Value 30% | 65 $14.03 per amp ($336.76, 24 A total) | 71 $12.78 per amp ($255.63, 20 A total) |
| Charge current 15% | 20 24 A total | 11 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% | 100 5-year warranty | 50 3-year warranty |
Specifications
| ProMariner ProTournament Elite 240 Quad | ProMariner ProSport HD 20 Plus | |
|---|---|---|
| Charging | ||
| Banks | 4 | 3 |
| Total current | 24 A | 20 A |
| Lithium mode | Yes | Yes |
| AGM mode | Yes | Yes |
| Temperature compensation | Yes | - |
| Build | ||
| Water rating | IP67 | IP67 |
| Display or app | Yes | No |
| Ignition protected | Yes | Yes |
| Weight | 9.9 lb | 7.8 lb |
| Warranty | 5 years | 3 years |
| Released | - | 2021-01-25 |
