CrimpComponent folio · Charger · Victron
Buck-Boost DC-DC 25A
Buck-boost DC-DC converter for Euro 6 smart-alternator vehicles. 25A output; programmable, supports B2B charging from 10–30V input. Common in vans where the alternator regulates down at idle.
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Victron Buck-Boost 25A · 4 terminals
01 — Reference run
A sizing result with its assumptions attached.
Conductor10 mm²8 AWG
Fuse35 Apositive run
Voltage drop2.2%3 m one way
Design current25 A12 V system
The Crimp engine applies its ordinary continuous-load headroom, voltage-drop budget, terminal clamp, and standard fuse ladder. The 3 m one-way run is a stated reference, not a universal installation prescription.
02 — Catalog specification
The part the engine actually sees.
- Rated output
- 25 A
- Typical charge current
- 24 A
- Canvas footprint
- 200 × 110 px
Terminal map
| Terminal | Polarity | Direction | Rating |
|---|---|---|---|
| IN + | positive | input | 50 A |
| IN − | negative | input | 50 A |
| OUT + | positive | output | 25 A |
| OUT − | negative | output | 25 A |
03 — Supporting parts
What belongs around it.
- 6 m total of 10 mm² (8 AWG) marine cable
- Four 10 mm² cable lugs matched to the equipment studs
- 35 A fuse and holder on the positive run
- Heat-shrink, strain relief, and terminal boots sized to the cable
See what it changes in your system
With JavaScript enabled, describe your existing boat, van, or off-grid system here. The model supplies topology; Crimp's engine computes the attachment, resized runs, checks, and supporting basket.