Renogy DCC30S 30A DC-DC MPPT
#2 in Up to 30 AFull review
For smaller vans and truck campers with a 100 Ah battery and a panel or two on the roof. Bigger banks or arrays need the 50 A DCC50S.
Amazon $186.99$186.99
The Renogy DCC30S 30A DC-DC MPPT is the better DC-DC charger overall, rated 4.0 to 3.1. The Renogy DCC30S 30A DC-DC MPPT leads on charge current, features and warranty. The Renogy 20A DC-DC Charger costs $46 less ($140.99 vs $186.99).
Renogy 20A DC-DC Charger
#5 in Up to 30 AFull review
For a van or camper with one 100 Ah lithium battery and a short cable run. It does the basic job well at the lowest price of the big brands.
Amazon $140.99$140.99
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 DCC30S 30A DC-DC MPPT for charge current (30 A vs 20 A), features (solar input, smart alternator support vs smart alternator support) and warranty (3-year warranty vs 2-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every up to 30 A DC-DC charger; a clear win is highlighted. How we rank explains each one.
| Factor weight | Renogy DCC30S 30A DC-DC MPPT | Renogy 20A DC-DC Charger |
|---|---|---|
| Overall rating | 4.0/5 | 3.1/5 |
| Value 30% | 68 $6.23 per amp ($186.99, 30 A) | 59 $7.05 per amp ($140.99, 20 A) |
| Charge current 20% | 100 30 A | 50 20 A |
| Efficiency 10% | 100 97% peak efficiency | 67 94% peak efficiency |
| Features 20% | 50 solar input, smart alternator support | 25 smart alternator support |
| Warranty 20% | 50 3-year warranty | 25 2-year warranty |
Specifications
| Renogy DCC30S 30A DC-DC MPPT | Renogy 20A DC-DC Charger | |
|---|---|---|
| Charging | ||
| Charge current | 30 A | 20 A |
| Input battery | 12 V | 12 V |
| Output battery | 12 V | 12 V |
| Battery types | - | AGM, gel, flooded, LiFePO4 |
| LiFePO4 profile | Yes | Yes |
| Smart alternator support | Yes | Yes |
| Peak efficiency | 97% | 94% |
| Isolated | No | - |
| Solar | ||
| Solar input | MPPT, up to 400 W | No |
| Max solar voltage | 30 V | - |
| Build | ||
| Bluetooth | No | No |
| Ingress rating | - | IP32 |
| Weight | 3.1 lb | 2.7 lb |
| Warranty | 3 years | 2 years |
| Released | 2025-07 | - |