Charger
Victron Blue Smart IP65 12/15 wiring diagram
Blue Smart IP65 12/15: 15A portable charger with 4A Low mode, Bluetooth, clamps and M8 ring leads. Separate 230V (180–265 VAC) and 120V (100–130 VAC) versions; keep connections protected.
- Rated output
- 15 A
Wiring diagram
How the BS IP65 15 is wired.
Open this example in Crimp to use your own parts and cable lengths. Review the assumptions and installation notes as you adapt the circuit.
Cable sizing for this example
Use the diagram as a starting point for your installation. Replace the example equipment and cable lengths with your own, and check the connections against your exact model's instructions.
3 m one way
12 V system
- Wire
- 6 mm² · 10 AWG
- Example fuse
- 20 A
- Design current
- 15 A
- Voltage drop
- 2.2%
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.
Run-length and manufacturer assumptions
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.
Supporting parts
- 6.1 m total of 6 mm² (10 AWG) marine cable
- Terminations for 6 mm² cable, matched to the equipment's screw terminals, leads or studs
- 20 A fuse and holder on the positive run
- Heat-shrink, strain relief and terminal boots sized to the cable
Check stud sizes, fuse type, run length and how warm the space gets against the gear you actually have before you order.
Installation notes
Before you install.
Open a question for model-specific guidance and sources.
Verified against the manufacturer's documentation (rev. Rev 05 — 08/2025), checked 2026-10-01. Manufacturer documentation →
Which portable charger is covered?
The Blue Smart IP65 12/15 charges a nominal 12 V battery at up to 15 A. Its Low mode is 4 A, useful when the battery cannot accept full current. The 230 V version covered here accepts 180–265 VAC; the separate 120 V version accepts 100–130 VAC in its current manual. Match the mains voltage on the installed unit before connecting it.
How are the leads connected?
Crimp's BATT + / BATT − map to the red/black DC lead and interchangeable battery connection. The charger is supplied with clamps and M8 ring terminals; this model's lead is 4 mm². AC L / AC N represent its mains cord rather than accessible wiring terminals. The Bluetooth connection, mode button, and accessory quick connector are not drawn.
For a permanently wired battery, isolate the DC system, connect with correct polarity, then apply mains. For temporary charging of a conventional negative-ground vehicle, connect positive to battery positive and negative to the specified chassis point away from the battery. Disconnect mains before removing the DC connections, following the manual's reverse sequence.
Which fuse protects the battery lead?
The protection table, printed page 18 recommends 20–40 A external protection for the 12/15, coordinated with the installed cable and located near battery positive. A fuse near the charger cannot protect cable upstream from it. Optional connector accessories sometimes include a 30 A fuse; that accessory value is not automatically the right protection for every charger, extension, or cable route.
Which charging settings matter?
Normal mode uses 14.4 V absorption, 13.8 V float, and 13.2 V storage. The Li-ion preset uses 14.2 V absorption without lead-acid temperature compensation. Choose the battery-approved profile and current in VictronConnect or through the mode button; do not infer chemistry from nominal 12 V alone. The full-current lead-acid guideline starts at 50 Ah, but actual battery limits take precedence.
Recondition is an optional high-voltage treatment for suitable lead-acid batteries, not routine lithium charging. Do not charge lithium below 0°C without an appropriate battery-controlled arrangement.
How is it installed and checked?
Keep the charger ventilated on a nonflammable surface with 100 mm above and below, protected from weather and away from battery gases. Permanent mounting is vertical with the AC cord downward. Full output is specified up to 30°C. IP65 does not make accessory joints or the mains outlet waterproof. Confirm the displayed mode, battery voltage, and charge current after connection.
Fit check
Connect it to the rest of your system.
Describe your setup to draft a system with Blue Smart IP65 12/15 connected. Review the selected parts and cable lengths, then edit the diagram in Crimp.
The model only picks parts and draws the connections. Every wire size and fuse rating still comes from Crimp's own sizing, never from the model.
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Technical reference
Specifications and terminal map.
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Catalog specification
Blue Smart IP65 12/15: 15A portable charger with 4A Low mode, Bluetooth, clamps and M8 ring leads. Separate 230V (180–265 VAC) and 120V (100–130 VAC) versions; keep connections protected.
- Rated output
- 15 A
- Planning charge current
- 14 A
Terminal map
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
AC L
neutral · input
AC N
neutral · input
BATT +
positive · output
BATT −
negative · output
Sources and sizing method
Equipment specifications. Model details, ratings and terminal roles come from the catalog. Check your unit’s label and current manufacturer documentation for its exact revision.
Example sizing. Sized against ABYC E-11. Boats built to UK or EU rules answer to ISO 13297 — check these figures against it before you build. Results use the example current and run length shown above. Set your actual equipment, lengths and installation conditions in Crimp before choosing hardware.
Read how the sizing worksNext step
Plan your installation with BS IP65 15.
Open this example as a new project, or add this component to your existing diagram. Use your equipment and cable lengths to review the sizing.
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