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 2.9. The Minn Kota MK-220PCL leads on value, charge current and features. The ProMariner ProSport HD 8 costs $72.58 less ($169.99 vs $242.57).
For a small boat with a starting battery and a modest trolling battery, from a maker whose chargers are built for engine compartments.
Amazon $169.99Prices 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 value ($12.13 per amp ($242.57, 20 A total) vs $21.25 per amp ($169.99, 8 A total)), charge current (20 A total (2 banks of 10 A) vs 8 A total) and 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 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 8 |
|---|---|---|
| Overall rating | 3.8/5 | 2.9/5 |
| Value 30% | 74 $12.13 per amp ($242.57, 20 A total) | 39 $21.25 per amp ($169.99, 8 A total) |
| Charge current 15% | 58 20 A total (2 banks of 10 A) | 8 8 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-220PCL | ProMariner ProSport HD 8 | |
|---|---|---|
| Charging | ||
| Banks | 2 | 2 |
| Current per bank | 10 A | - |
| Total current | 20 A | 8 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 | 5.2 lb |
| Warranty | 3 years | 3 years |
| Released | 2021 | - |
