Minn Kota MK-318PCL
#10 in 3 and 4 bankFull review
For a smaller bass boat with a starting battery and a 24 V trolling pair that sees light use; heavy daily use calls for 10 A banks.
Amazon $235.01$235.01
The Minn Kota MK-318PCL is the better onboard marine battery charger overall, rated 3.4 to 3.3. The Minn Kota MK-318PCL leads on features. The Minn Kota MK-318PCL costs $20.62 less ($235.01 vs $255.63).
ProMariner ProSport HD 20 Plus
#11 in 3 and 4 bankFull review
For bass boats with a starting battery and a 24 V trolling pair, with ignition protection for gasoline engine bays.
Amazon $255.63$255.63
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 Minn Kota MK-318PCL for features (lithium mode, temperature compensation, charge display or app vs lithium mode, IP67 or better).
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 | Minn Kota MK-318PCL | ProMariner ProSport HD 20 Plus |
|---|---|---|
| Overall rating | 3.4/5 | 3.3/5 |
| Value 30% | 70 $13.06 per amp ($235.01, 18 A total) | 71 $12.78 per amp ($255.63, 20 A total) |
| Charge current 15% | 7 18 A total (3 banks of 6 A) | 11 20 A total |
| Features 25% | 75 lithium mode, temperature compensation, charge display or app | 50 lithium mode, IP67 or better |
| Warranty 30% | 50 3-year warranty | 50 3-year warranty |
Specifications
| Minn Kota MK-318PCL | ProMariner ProSport HD 20 Plus | |
|---|---|---|
| Charging | ||
| Banks | 3 | 3 |
| Current per bank | 6 A | - |
| Total current | 18 A | 20 A |
| Lithium mode | Yes | Yes |
| AGM mode | Yes | Yes |
| Temperature compensation | Yes | - |
| Build | ||
| Water rating | - | IP67 |
| Display or app | Yes | No |
| Ignition protected | - | Yes |
| Weight | 8.4 lb | 7.8 lb |
| Warranty | 3 years | 3 years |
| Released | 2021 | 2021-01-25 |