Redarc BCDC Core 25 BCDCN1225 25A in-cabin DC-DC charger with MPPT solar — front view showing branding and label

Redarc BCDC Core 25 side view showing bare-wire terminal block and vent slots

Redarc BCDC Core 25 top view showing mounting tabs and DIP switch cover

Redarc

BCDC Core 25 — 25A In-Cabin DC-DC Charger + MPPT Solar

Name: Redarc BCDC Core 25 — 25A In-Cabin DC-DC Charger + MPPT Solar
Brand: Redarc
SKU: BCDCN1225
Price: 390.00 AUD
Availability: InStock

BCDCN1225

25A in-cabin DC-DC charger with MPPT solar for 12V auxiliary banks. Dual-input, 5 chemistry profiles, built in Australia.

$390.00

4 interest-free payments of $97.50 with Afterpay

or finance your build with Allied Finance

We accept Visa Mastercard Amex Apple Pay PayPal Zip Afterpay Finance

Universal fitmentCharges a 12V auxiliary bank from a 12V or 24V input vehicle

Shipping & collection

Worldwide shipping available^*

In-store pickup

Professional installation available

*Shipping is calculated at checkout based on your location. Some products can't be delivered to every address.

25A IN-CABIN CORE DC-DC

25A in-cabin DC-DC with MPPT solar and 5 chemistry profiles. No Bluetooth.

MULTI-STAGE CHARGING

Chemistry-specific multi-stage charging up to 25A continuous for a full charge.

LITHIUM AND AGM COMPATIBLE

Set the chemistry profile, install, forget. Profiles for lithium and lead-acid banks.

IN-CABIN MOUNT

Designed to run cool in the living area or under a seat. No engine-bay heat exposure.

2 YEAR REDARC WARRANTY

Backed by 2 years direct from Redarc. Repair or replacement per Redarc's warranty policy.

A 25A DC-DC charger that keeps a 12V auxiliary battery topped up from both the vehicle alternator and a solar panel at the same time. Runs behind a seat, inside a canopy or in a service body. Fits 4WDs, utes, caravans, camper trailers and canopy builds with a 12V or 24V input vehicle.

Dual-input charging with a built-in MPPT solar regulator and Green Power Priority. Pulls from solar first and tops up from the alternator when solar can't keep up. Chemistry-specific multi-stage profiles cover standard lead-acid, calcium, gel, AGM and LiFePO4 lithium banks. Fanless silent operation. 165 by 120 by 37mm. 900g. Bare-wire terminals.

Not rated for engine-bay heat or weather exposure. Fuse the input at 40A and the output at 60A at the source (Redarc FK40 and FK60 are the spec). On late-model vehicles with stop-start or variable-voltage alternators, hardwire an ignition trigger to the blue wire so the charger only runs when the engine runs.

What sets it apart

Dual input + MPPT — alternator and solar together, with Green Power Priority.

In-cabin rated — mounts under seats, in canopies, behind panels.

5 chemistry profiles — covers every common auxiliary bank.

Fanless design — no fan noise, no relay click.

12V or 24V input — one unit for either vehicle, output stays 12V.

E-Mark approved — automotive type approval for AU vehicles.

Built in Australia — designed and manufactured at Lonsdale, SA.

2-year Redarc warranty — direct from the manufacturer.

Pairs with

MIDI Bolt-Down Fuses — 30A to 150A

$6.00

Eaton Bussmann MIDI Fuse Holder — Bolt-Down 40A to 80A

$29.00

Dual input charging — alternator + solar simultaneously
Built-in MPPT solar — 9-32V DC solar input
Green Power Priority — pulls from solar first
5 chemistry profiles — lead-acid, calcium, gel, AGM, LiFePO4
In-cabin rated — under seat, canopy or service body
Fanless design — silent operation
9-32V input — runs on 12V or 24V vehicles
2-year warranty — direct from Redarc

Charging

Continuous output | 25A

Output voltage | 12V DC

Max charging voltage | 15.3V

Output power | 375W

Charge stages | Multi-stage, 5 profiles

Inputs

Vehicle input | 9-32V DC

Solar input | 9-32V DC MPPT

Solar switch-on | 9V

Dual-input | DC + solar simultaneously

Control and build

Green Power Priority | Solar first

Fan | Fanless silent

Terminals | Bare wire

Protection and ratings

Input fuse | 40A (FK40)

Output fuse | 60A (FK60)

Standby current | <8mA

No-load current | <100mA

Operating temperature | -15°C to 80°C

Type approval | E-Mark

Installation | In-cabin / canopy

Length | 165mm

Width | 120mm

Height | 37mm

Weight | 0.9 kg

Mount in a cool, dry location — under a seat, behind a side panel, inside a canopy or in a service body. Not rated for engine-bay heat or weather exposure. Leave 50mm clearance above and around the unit for passive heat dissipation (no fan). Mounts flat using the existing screw tabs — no bracket required.

Fuse both ends of each run. Input: 40A fuse at the start battery (Redarc FK40 or equivalent MIDI). Output: 60A fuse at the auxiliary battery (Redarc FK60 or equivalent MIDI). Minimum cable size is 6 B&S (13.5mm²) for runs up to 4 metres; step up to 4 B&S (21mm²) for longer runs. All earth returns to the engine block or chassis, not the battery negative post.

On late-model vehicles with stop-start or variable-voltage smart alternators, and on any build with more than one BCDC in the circuit, hardwire a 12V ignition trigger to the charger's blue wire so it only runs when the engine runs. Without the trigger, a smart-alternator vehicle may not activate the DC-DC input.

Set the chemistry profile with the DIP switches on the case before first use. The instruction manual below has the switch positions for standard lead-acid, calcium, gel, AGM and LiFePO4. Wrong profile won't damage the battery but will undercharge or overcharge it over time.

BCDC Core Instruction Manual

BCDC Brochure

Charges a 12V auxiliary bank from a 12V or 24V input vehicle

12V and 24V input vehicle alternators (output always 12V)

Standard lead-acid, calcium, gel, AGM and LiFePO4 lithium auxiliary banks

Simultaneous MPPT solar input (9-32V DC)

Not for 24V house banks — output is always 12V

Not for engine-bay mounting — in-cabin and canopy only

Q: What does DC-DC charger actually mean?
A charger that takes 12V or 24V from the vehicle alternator and delivers a controlled 12V multi-stage charge to a separate auxiliary battery. It isolates the two batteries, feeds the auxiliary at the right voltage profile for its chemistry, and protects both from each other when the vehicle is off.

Q: What is MPPT and does this have it?
Maximum Power Point Tracking. It's the solar regulator logic that matches the panel's output voltage to the battery's charging voltage so you get the most charge out of the panel at any given sun angle. Yes, the BCDC Core 25 has it built in. Takes a 9-32V DC solar input, with a 9V switch-on threshold.

Q: What is Green Power Priority?
Redarc's name for the charger's rule to pull from the solar input first and only top up from the alternator when solar can't carry the load. Saves fuel and takes load off the alternator when the sun is up.

Q: What's the difference between Core, Classic and Alpha?
Core is in-cabin only, DC + MPPT solar, no Bluetooth. Classic is the same features plus engine-bay rated for under-bonnet installs. Alpha adds Bluetooth app monitoring, a sixth custom chemistry profile and a longer warranty.

Q: Which battery chemistries does it support?
Five: standard lead-acid, calcium, gel, AGM and LiFePO4 lithium. Set the profile with the DIP switches on the case before first use.

Q: What size battery bank will it charge?
Up to 200Ah for AGM, gel, calcium and standard lead-acid. Up to 100Ah for LiFePO4. Check the battery manufacturer's maximum charge-current recommendation if in doubt.

Q: Where does it mount?
In-cabin or canopy only. Under a seat, behind a side panel, inside a service body, inside a camper trailer or caravan cabinet. Not rated for engine-bay heat or weather exposure. Leave 50mm clearance for passive cooling (no fan).

Q: Does it work with smart alternators?
Yes. Our workshop always hardwires a 12V ignition trigger to the blue wire on late-model vehicles with stop-start or variable-voltage alternators, and on any build with more than one BCDC in the circuit, so all chargers only run when the engine runs.

Q: What cable size and fuses do I need?
6 B&S (13.5mm²) for runs up to 4 metres; step up to 4 B&S (21mm²) for longer runs. Fuse the input at 40A (Redarc FK40 or equivalent MIDI) and the output at 60A (Redarc FK60). Fuse at the source end of each run, not the charger.

Q: Can I use this with a 24V house bank?
No. The output is 12V regardless of input voltage. The 9-32V input range covers both 12V and 24V input vehicles, but the output always charges a 12V bank. For a 24V house bank, use the Redarc BCDC2420 instead.

Q: How long is the warranty?
Two years direct from Redarc against manufacturing defects.

Cart 0

Sorry, looks like we don't have enough of this product.