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Redarc
BCDC Core 40 — 40A In-Cabin DC-DC Charger + MPPT Solar
BCDCN1240
Compact 40A in-cabin DC-DC charger with built-in MPPT solar. 12V output, dual input, five chemistry profiles, fanless design. Australian designed and built.
$438.00
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40A IN-CABIN CORE DC-DC
No-fuss DC-DC without the extra features — built for the build that just needs a charger.
3-STAGE CHARGING
12V input, 12V output at up to 40A — multi-stage profile for a full charge.
LITHIUM AND AGM COMPATIBLE
Set the chemistry, 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.
3 YEAR REDARC WARRANTY
Backed by 3 years direct from Redarc. Repair or replacement in accordance with Redarc's warranty policy.
A compact 40A DC-DC charger that runs a 12V auxiliary battery bank from the alternator and the sun at the same time. The dual input takes 9 to 32V from the start battery and 9 to 32V from a solar panel through the built-in MPPT, so the auxiliary charges whether you're driving, parked, or both. Fits under a seat, inside a canopy, in a caravan bulkhead or behind a drawer in a 4WD, campervan or ute.
Fanless and silent, 165 by 120 by 37mm, 900g. Bare-wire connections at the inputs and output, with a 60A fuse at each end (not supplied). Charges AGM, gel, calcium, standard lead-acid and LiFePO4 banks under multi-stage control. Operating temperature -15 to 80°C, nominal 600W output, max charging voltage 15.3V.
In-cabin only. The housing isn't sealed and isn't rated for engine-bay heat or dust. Our workshop hardwires an ignition trigger on late-model smart-alternator vehicles and on any build with more than one BCDC, so chargers only run when the engine's running. For a 24V house system, pick the BCDC2420 instead. For engine-bay mounting on a 12V build, pick the Classic40.
What sets it apart
Dual input charging — alternator and MPPT solar run at the same time
40A continuous output — 600W nominal, true 40A at the auxiliary
Fanless and silent — no fan noise, no dust intake, no moving parts
Five chemistry profiles — AGM, gel, calcium, lead-acid, LiFePO4
Smart-alternator ready — ignition-trigger input for stop-start vehicles
Compact in-cabin housing — 165 by 120 by 37mm, 900g
9 to 32V input — runs on 12V or 24V vehicles, output stays 12V
Australian designed and built — Lonsdale, SA, backed by Redarc's 2-year warranty
Pairs with
- Dual input charging — alternator plus MPPT solar at the same time
- 40A continuous output — 600W nominal, true 40A to the auxiliary
- Fanless and silent — no fan noise and no dust intake
- Five chemistry profiles — AGM, gel, calcium, lead-acid, LiFePO4
- Smart-alternator ready — ignition-trigger input for stop-start vehicles
- 9 to 32V input — runs on 12V or 24V vehicles, output stays 12V
- Compact in-cabin housing — 165 by 120 by 37mm, 900g
- Australian designed and built — Lonsdale SA, backed by Redarc's 2-year warranty
Charging
Output current: 40A continuous
Nominal power: 600W
Output voltage: 12V DC
Max charging voltage: 15.3V
Chemistries: 5 profiles
Charging stages: Multi-stage auto
Input
Alternator input: 9–32V DC
Solar input: 9–32V MPPT
Solar switch-on: 9V
Simultaneous: Yes, dual input
Operation
Standby current: Under 8mA
No-load current: Under 100mA
Operating temp: -15 to 80°C
Cooling: Fanless
Protection
Input fuse: 60A, not supplied
Output fuse: 60A, not supplied
Build
Terminal type: Bare wire
Dimensions: 165×120×37mm
Weight: 900g
