For a boat with a starting battery and a 12 V trolling or house battery, at a useful 10 A a bank and with lithium support.
Amazon $242.57The Minn Kota MK-220PCL is the better onboard marine battery charger overall, rated 3.8 to 3.2. The Minn Kota MK-220PCL leads on features, value and charge current. The ProMariner ProSport HD 12 costs $41.27 less ($201.30 vs $242.57).
For a two battery boat that wants ignition protection and smarter current sharing than a fixed split charger.
Amazon $201.30Prices 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-220PCL for features (lithium mode, temperature compensation, charge display or app vs lithium mode, IP67 or better), value ($12.13 per amp ($242.57, 20 A total) vs $16.78 per amp ($201.30, 12 A total)) and charge current (20 A total (2 banks of 10 A) vs 12 A total (2 banks of 6 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 | Minn Kota MK-220PCL | ProMariner ProSport HD 12 |
|---|---|---|
| Overall rating | 3.8/5 | 3.2/5 |
| Value 30% | 74 $12.13 per amp ($242.57, 20 A total) | 54 $16.78 per amp ($201.30, 12 A total) |
| Charge current 15% | 58 20 A total (2 banks of 10 A) | 25 12 A total (2 banks of 6 A) |
| 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-220PCL | ProMariner ProSport HD 12 | |
|---|---|---|
| Charging | ||
| Banks | 2 | 2 |
| Current per bank | 10 A | 6 A |
| Total current | 20 A | 12 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 | 6.4 lb | 6 lb |
| Warranty | 3 years | 3 years |
| Released | 2021 | 2021-01-25 |
