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 $336.76
For bigger fishing boats with a 36 V trolling motor bank plus a starting battery, charging all four at 10 A each.
- 4 x 10 AOutput
- 40 ATotal current
- YesLithium mode
- IP68Water rating
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
- 10 A per bank refills a deep cycle trolling motor battery overnight
- A lithium mode on every bank, so LiFePO4 trolling motor batteries can share the charger with a lead acid starting battery
- Per bank 25 to 100% charge lights show how far along each battery is without a meter
- IP68 sealed and mountable in any orientation, even upside down
- Only a 3 year warranty, where the best rivals give 5
- At 15.5 lb it needs solid mounting on a transom or bulkhead
The NOCO Genius GENPRO10X family
Every NOCO Genius GENPRO10X model we rank, smallest first. Ratings compare each against its own bank count.
| Model | Output | Rating | Price |
|---|---|---|---|
| NOCO Genius GENPRO10X1 | 1 x 10 A | 3.8/5 | $116.50 |
| NOCO Genius GENPRO10X2 | 2 x 10 A | 4.0/5 | $224.95 |
| NOCO Genius GENPRO10X3 | 3 x 10 A | 3.9/5 | $324.95 |
| NOCO Genius GENPRO10X4 (this one) | 4 x 10 A | 4.1/5 | $424.95 |
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its bank count. How we rank explains each one.
Specifications
| Model number | GENPRO10X4 |
|---|---|
| Charging | |
| Banks | 4 |
| Current per bank | 10 A |
| Total current | 40 A |
| Lithium mode | Yes |
| AGM mode | Yes |
| Temperature compensation | Yes |
| Build | |
| Water rating | IP68 |
| Display or app | Yes |
| Ignition protected | Yes |
| Weight | 15.5 lb |
| Warranty | 3 years |
| Released | 2020-08-17 |
Alternatives in this bank count
For a three battery boat with big deep cycle or lithium trolling batteries that need the fastest Minn Kota charge.
Amazon $372.02For 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 $324.95Compare
Compare the NOCO Genius GENPRO10X4 with any other onboard marine battery charger →
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