For mixed voltage setups, such as a 24 V truck charging a 12 V camper bank or a 12 V van with a 24 V house system.
Off Grid Stores $356.15The Victron Orion XS 1400 is the better DC-DC charger overall, rated 3.9 to 2.9. The Victron Orion XS 1400 leads on warranty and efficiency. The Kisae Abso DMT1250 costs $7.15 less ($349 vs $356.15).
For RV owners who want 50 A and a wired remote display without paying Victron or Redarc prices. The short warranty and one-source-at-a-time design hold it back.
Amazon $349Prices 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 Victron Orion XS 1400 for warranty (5-year warranty vs 1-year warranty) and efficiency (98.5% peak efficiency vs 90% 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 | Victron Orion XS 1400 | Kisae Abso DMT1250 |
|---|---|---|
| Overall rating | 3.9/5 | 2.9/5 |
| Value 30% | 58 $7.12 per amp ($356.15, 50 A) | 60 $6.98 per amp ($349, 50 A) |
| Charge current 20% | 50 50 A | 50 50 A |
| Efficiency 10% | 100 98.5% peak efficiency | 22 90% peak efficiency |
| Features 20% | 50 smart alternator support, Bluetooth | 50 solar input, smart alternator support |
| Warranty 20% | 100 5-year warranty | 0 1-year warranty |
Specifications
| Victron Orion XS 1400 | Kisae Abso DMT1250 | |
|---|---|---|
| Charging | ||
| Charge current | 50 A | 50 A |
| Input battery | 12/24 V | 12/24 V |
| Output battery | 12/24 V | 12 V |
| LiFePO4 profile | Yes | Yes |
| Smart alternator support | Yes | Yes |
| Peak efficiency | 98.5% | 90% |
| Isolated | No | No |
| Solar | ||
| Solar input | No | MPPT |
| Max solar voltage | - | 32 V |
| Build | ||
| Bluetooth | Yes | No |
| Ingress rating | IP65 | - |
| Weight | 1.1 lb | 4.1 lb |
| Warranty | 5 years | 1 year |
| Released | - | 2022-10 |
