NOCO Genius GENPRO10X4
#5 in 3 and 4 bankFull review
For bigger fishing boats with a 36 V trolling motor bank plus a starting battery, charging all four at 10 A each.
Amazon $424.95$424.95
The NOCO Genius GENPRO10X4 is the better onboard marine battery charger overall, rated 4.1 to 3.9. The NOCO Genius GENPRO10X4 leads on charge current. The NOCO Genius GENPRO10X3 costs $100 less ($324.95 vs $424.95).
NOCO Genius GENPRO10X3
#6 in 3 and 4 bankFull review
For bass boats with a starting battery and a 24 V trolling motor pair, at 10 A a bank with lithium and AGM modes on each.
Amazon $324.95$324.95
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 GENPRO10X4 for charge current (40 A total (4 banks of 10 A) vs 30 A total (3 banks of 10 A)).
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 | NOCO Genius GENPRO10X4 | NOCO Genius GENPRO10X3 |
|---|---|---|
| Overall rating | 4.1/5 | 3.9/5 |
| Value 30% | 82 $10.62 per amp ($424.95, 40 A total) | 81 $10.83 per amp ($324.95, 30 A total) |
| Charge current 15% | 56 40 A total (4 banks of 10 A) | 33 30 A total (3 banks of 10 A) |
| Features 25% | 100 lithium mode, IP67 or better, temperature compensation, charge display or app | 100 lithium mode, IP67 or better, temperature compensation, charge display or app |
| Warranty 30% | 50 3-year warranty | 50 3-year warranty |
Specifications
| NOCO Genius GENPRO10X4 | NOCO Genius GENPRO10X3 | |
|---|---|---|
| Charging | ||
| Banks | 4 | 3 |
| Current per bank | 10 A | 10 A |
| Total current | 40 A | 30 A |
| Lithium mode | Yes | Yes |
| AGM mode | Yes | Yes |
| Temperature compensation | Yes | Yes |
| Build | ||
| Water rating | IP68 | IP68 |
| Display or app | Yes | Yes |
| Ignition protected | Yes | Yes |
| Weight | 15.5 lb | 12.8 lb |
| Warranty | 3 years | 3 years |
| Released | 2020-08-17 | 2020-08-17 |