For boats, trucks and engine bay installs that need a sealed charger with solar and Bluetooth.
Amazon $399.99The Renogy PRO 50A DC-DC MPPT IP67 is the better DC-DC charger overall, rated 3.8 to 3.5. The Renogy PRO 50A DC-DC MPPT IP67 leads on warranty and features. The Renogy DCC50S 50A DC-DC MPPT wins on value and efficiency. The Renogy DCC50S 50A DC-DC MPPT costs $130 less ($269.99 vs $399.99).
The value pick for vans and campers that want alternator and solar charging in one box. It costs well under half as much as a Redarc dual-input unit for more current.
Amazon $269.99Prices were last checked October 31, 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 Renogy PRO 50A DC-DC MPPT IP67 for warranty (5-year warranty vs 2-year warranty) and features (solar input, smart alternator support, Bluetooth vs solar input, smart alternator support).
- Choose the Renogy DCC50S 50A DC-DC MPPT for value ($5.40 per amp ($269.99, 50 A) vs $8 per amp ($399.99, 50 A)) and efficiency (97% peak efficiency vs 94% peak efficiency).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 40 A and up DC-DC charger; a clear win is highlighted. How we rank explains each one.
| Factor weight | Renogy PRO 50A DC-DC MPPT IP67 | Renogy DCC50S 50A DC-DC MPPT |
|---|---|---|
| Overall rating | 3.8/5 | 3.5/5 |
| Value 30% | 50 $8 per amp ($399.99, 50 A) | 78 $5.40 per amp ($269.99, 50 A) |
| Charge current 20% | 50 50 A | 50 50 A |
| Efficiency 10% | 67 94% peak efficiency | 100 97% peak efficiency |
| Features 20% | 75 solar input, smart alternator support, Bluetooth | 50 solar input, smart alternator support |
| Warranty 20% | 100 5-year warranty | 25 2-year warranty |
Specifications
| Renogy PRO 50A DC-DC MPPT IP67 | Renogy DCC50S 50A DC-DC MPPT | |
|---|---|---|
| Charging | ||
| Charge current | 50 A | 50 A |
| Input battery | 12/24 V | 12 V |
| Output battery | 12/24 V | 12 V |
| Battery types | AGM, gel, flooded, LiFePO4 | - |
| LiFePO4 profile | Yes | Yes |
| Smart alternator support | Yes | Yes |
| Peak efficiency | 94% | 97% |
| Isolated | - | No |
| Solar | ||
| Solar input | MPPT, up to 750 W | MPPT, up to 660 W |
| Max solar voltage | 50 V | 50 V |
| Build | ||
| Bluetooth | Yes | No |
| Ingress rating | IP67 | - |
| Weight | 5.5 lb | 4.1 lb |
| Warranty | 5 years | 2 years |
| Released | - | 2025-08 |
