SmartSolar 100/50
See the SmartSolar 100/50 solar-panel and battery connections, including battery-side protection. Open the example to plan your own array, house bank and cable runs.
Open this example as a new project. Use your own parts and cable lengths to make the plan yours.
The sizes below describe the battery-side charge circuit. The editable example also includes a placeholder solar array; replace it with your panels before reviewing PV wiring and protection.
3 m one way
12 V system
Sized against ABYC E-11. The design current is the unit's rated output. The length is one way; voltage drop includes an equal-length return.
The editable example uses 3.048 m (10 ft) runs unless a shorter run is stated. Metric overviews round these to 3 m. Adapt the parts and lengths to your installation before choosing cable and protection.
Wiring diagram
Open this example in Crimp to use your own parts and cable lengths. Review the assumptions and installation notes as you adapt the circuit.
Installation notes
Guidance for this model, with sources linked beside the relevant advice.
Verified against the manufacturer's documentation (rev. 12 — 06/2026), checked 2026-09-11. Manufacturer documentation →
The catalog item is the Victron SmartSolar MPPT 100/50, with Bluetooth and VE.Direct. Its SmartSolar manual covers the 100/30 and 100/50; use the 100/50 column. The similar BlueSolar name does not identify this catalog item.
PV + and PV − connect to the array. BATT + and BATT − connect to the house bank, with protection on the battery-positive run. For automatic voltage detection, the installation sequence is battery first, wait 10 seconds, verify the detected voltage, then connect PV. Check polarity and the battery charge profile.
The reference drawing highlights the battery-side charge circuit. The editable starter adds a 400 W reference array and a 12 V, 200 Ah house bank. Its array is a placeholder at 20 V operating voltage and 24 V open-circuit, not a selected panel product. Replace it with your own array before relying on PV sizing. The controller's rated output sizes the battery circuit; the example does not predict that this array will produce the full rated charge current.
The manual's battery table specifies 55 A minimum and 70 A maximum for the 100/50. The fuse shown above is Crimp's calculated example within that range. It protects the battery cable; it is not a PV-string fuse recommendation.
The starter and reference use the same battery-side length and current basis. Each length is one way, and voltage drop includes the return. Mount within the manual's 3 m battery distance; this example uses a 3 m battery cable path. Longer or warmer routes, bundling and different protection can change the required conductor. The manual lists 16 mm² / AWG6 power terminals: verify that your selected cable and termination fit.
The 100/50 specifications distinguish 100 V maximum PV open-circuit voltage, 60 A maximum PV short-circuit current and 50 A rated battery charge output. These are different quantities. Check cold-weather array Voc and panel temperature coefficients; use the actual string configuration and panel fuse requirements for PV protection.
For RV or campervan solar, house loads belong on protected distribution circuits. This starter covers DC charging. Add a Blue Sea 5026 fuse block for load branches, and use the conversion guide when changing battery chemistry. The methodology explains the sizing engine's limits.
Open the complete campervan and RV solar wiring examples to see this controller alongside distribution and loads. The full boat demo uses the smaller SmartSolar 100/30.
Build it out
Add SmartSolar 100/50 to your diagram, then connect your batteries, chargers and loads. Crimp calculates cable sizes and checks the connections as you draw.
Every cable you draw there is sized against ABYC E-11, from the same tables as the reference on this page.
Technical reference
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Check stud sizes, fuse type, run length and how warm the space gets against the gear you actually have before you order.
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
PV +
pv-pos
positive · input
PV −
pv-neg
negative · input
BATT +
batt-pos
positive · output
BATT −
batt-neg
negative · output
Method & provenance
Manufacturer specifications describe the equipment. Crimp calculates cable results from the circuit and assumptions you enter.
From the maker
Manufacturer, model, ratings and which terminal does what come from the catalog. A newer revision, or the nameplate on the unit in your hand, can say something different — when it does, the nameplate wins.
ABYC E-11
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 run length and the current above are what drive the result. Crimp doesn't know how warm your space gets; draw the cable inside an engine-bay zone on the canvas and it sizes for the heat.
Next step
Open this example as a new project. Add your equipment and cable lengths, then review the sizing and checks for your setup.