Renogy PRO 50A DC-DC MPPT IP67
#3 in 40 A and upFull review
For boats, trucks and engine bay installs that need a sealed charger with solar and Bluetooth.
Amazon $399.99$399.99
The Renogy PRO 50A DC-DC MPPT IP67 is the better DC-DC charger overall, rated 3.8 to 3.2. The Renogy PRO 50A DC-DC MPPT IP67 leads on warranty, charge current and features. The Renogy 40A DC-DC MPPT Charger wins on value. The Renogy 40A DC-DC MPPT Charger costs $214.61 less ($185.38 vs $399.99).
Renogy 40A DC-DC MPPT Charger
#12 in 40 A and upFull review
A cheap dual input charger for a van with a 200 Ah lithium bank and a modest solar array.
Amazon $185.38$185.38
Prices 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), charge current (50 A vs 40 A) and features (solar input, smart alternator support, Bluetooth vs solar input, smart alternator support).
- Choose the Renogy 40A DC-DC MPPT Charger for value ($4.63 per amp ($185.38, 40 A) vs $8 per amp ($399.99, 50 A)).
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 40A DC-DC MPPT Charger |
|---|---|---|
| Overall rating | 3.8/5 | 3.2/5 |
| Value 30% | 50 $8 per amp ($399.99, 50 A) | 89 $4.63 per amp ($185.38, 40 A) |
| Charge current 20% | 50 50 A | 0 40 A |
| Efficiency 10% | 67 94% peak efficiency | 56 93% 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 40A DC-DC MPPT Charger | |
|---|---|---|
| Charging | ||
| Charge current | 50 A | 40 A |
| Input battery | 12/24 V | 12 V |
| Output battery | 12/24 V | 12 V |
| Battery types | AGM, gel, flooded, LiFePO4 | AGM, gel, flooded, LiFePO4 |
| LiFePO4 profile | Yes | Yes |
| Smart alternator support | Yes | Yes |
| Peak efficiency | 94% | 93% |
| Solar | ||
| Solar input | MPPT, up to 750 W | MPPT, up to 670 W |
| Max solar voltage | 50 V | - |
| Build | ||
| Bluetooth | Yes | No |
| Ingress rating | IP67 | IP31 |
| Weight | 5.5 lb | 2.6 lb |
| Warranty | 5 years | 2 years |
| Released | - | 2026-08-23 |