CrimpVictron MPPT 100/50
MPPT solar charge controller. 50A output, max 700W @ 12V / 1400W @ 24V, 100V PV. Keep the array's cold-weather Voc under 100V.
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A sizing result with its assumptions attached.
Sized against ABYC E-11. Boats built to UK or EU rules answer to ISO 13297 — check these figures against it before you build. The design current is the unit's rated output. 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.
The part the engine actually sees.
- Compatible systems
- 12 V / 24 V
- Rated output
- 50 A
- Typical charge current
- 50 A
- PV open-circuit limit
- 100 V
Terminal map
| Terminal | Polarity | Direction | Rating |
|---|---|---|---|
| PV + | positive | input | 60 A |
| PV − | negative | input | 60 A |
| BATT + | positive | output | 50 A |
| BATT − | negative | output | 50 A |
What belongs around it.
- 6 m total of 16 mm² (6 AWG) marine cable
- Four 16 mm² cable lugs matched to the equipment studs
- 70 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.
Researched notes on the real installation.
What it does
MPPT solar charge controller: takes a solar array of up to 100 V open-circuit and charges a 12 V or 24 V battery at up to 50 A. Nominal PV power is 700 W on a 12 V bank and 1400 W on 24 V; battery voltage is detected automatically, and Bluetooth plus a VE.Direct port handle setup and monitoring.
Wiring it
The PV side connects to the array (max short-circuit current 60 A per the datasheet); the battery side goes to the bank through its own fuse. The controller charges whatever the battery side reads on first power-up, so connect the battery before the panels.
What people get wrong
Sizing the string by its rated Voc at 25 °C. A panel's open-circuit voltage rises as temperature falls, and the 100 V input limit applies on the coldest morning of the year — not in the datasheet's test conditions. Three 12 V-nominal panels in series can sit comfortably under 100 V in summer and exceed it below freezing. Size the string so cold-weather Voc stays under the limit, or use fewer panels in series.
Supporting parts
- PV disconnect between array and controller, rated for the string voltage
- Battery-side fuse at the bank end of the charge run
- MC4 connectors and PV wire on the array side; tinned marine cable on the battery side
Verified against the manufacturer's datasheet, checked 2026-08-01. Manufacturer datasheet →
What is known, assumed, and computed.
Catalog profile
The manufacturer, model, ratings and terminal map are maintained as planning data in Crimp's component catalog. Confirm the current manufacturer manual, exact revision and installed nameplate before ordering or wiring.
Engine reference
Sized against ABYC E-11. Boats built to UK or EU rules answer to ISO 13297 — check these figures against it before you build. The published conductor, fuse and voltage-drop result uses the visible reference length and current basis; it is not a universal installation prescription.
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