REDARC
BCDC Classic 25A DC-DC Battery Charger
BCDC Classic 25A DC-DC Battery Charger
SKU:BCDC1225D
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MANUALS & APPS
MANUALS & APPS
⚡ REDARC BCDC Classic 25A DC-DC Battery Charger — BCDC1225D
Australian-made 25A under bonnet DC-DC battery charger with dual alternator and solar input, MPPT solar regulation, Green Power Priority™, lithium support, 12V/24V smart alternator compatibility, and rugged sealed construction for harsh vehicle installations.
The REDARC BCDC1225D Classic 25A DC-DC Battery Charger is designed to charge auxiliary battery banks to a full state of charge while driving.
Built for demanding under bonnet, trailer, canopy, cabin, and vehicle installations, the BCDC1225D combines 25A DC-DC charging, separate alternator and solar inputs, integrated MPPT solar regulation, and Green Power Priority™ to maximise charging efficiency from both vehicle and solar power sources.
Suitable for 12V and 24V vehicle systems, including standard and variable voltage smart alternators, the BCDC1225D supports AGM, gel, standard lead acid, calcium, and LiFePO4 lithium batteries, making it a strong choice for modern dual battery and touring power systems.
✅ Key Benefits
⚡ 25A DC-DC Charging
Provides up to 25A maximum rated output current for compatible auxiliary battery systems.
🚗 12V & 24V Vehicle Compatible
Suitable for both 12V and 24V vehicle systems.
🔋 Lithium Ready
Includes a lithium charging profile for LiFePO4 batteries, along with profiles for AGM, gel, standard lead acid, and calcium batteries.
☀️ Built-In MPPT Solar Regulator
Integrated Maximum Power Point Tracking solar regulator helps maximise solar charging performance.
🌱 Green Power Priority™
Prioritises solar charging where available, helping reduce alternator load.
🔌 Separate DC & Solar Inputs
Allows alternator and solar charging inputs to be connected separately.
🔋 Simultaneous DC & Solar Charging
Charges from both solar and alternator inputs with Green Power Priority™.
🚙 Smart Alternator Compatible
Suitable for standard and variable voltage smart alternators.
🛡️ Under Bonnet Rated
Potted construction is designed to handle heat, water, dust, and vibration.
🇦🇺 Designed, Built & Tested in Australia
Built for Australian conditions, including extreme heat, corrugations, dust, and water crossings.
🚐 Suitable Applications
🚙 4WD dual battery systems
🚗 Under bonnet auxiliary battery charging
🚐 Caravan and RV charging systems
🛻 Ute canopy power systems
🏕️ Camper trailer electrical setups
🚚 Work vehicles and service bodies
⛵ Marine-style installations
☀️ Solar-assisted charging systems
🔋 Lithium and lead acid auxiliary battery systems
🏜️ Remote touring and off-grid travel
☀️ Dual Input Charging with Solar
The BCDC1225D Classic can charge from vehicle input and solar input, helping maintain auxiliary battery charge while driving or parked.
| Charging Feature | Details |
|---|---|
| DC Input | Alternator / vehicle charging input |
| Solar Input | Separate solar charging input |
| Solar Input Voltage | 9V to 32V |
| Solar Switch-On Voltage | 9V |
| MPPT Solar Regulator | Yes |
| Green Power Priority™ | Yes |
| Simultaneous Charging | DC and solar charging supported |
🔋 Battery Compatibility
The BCDC1225D supports common auxiliary battery chemistries, including lithium.
| Battery Type | Supported |
|---|---|
| Standard Lead Acid | Yes |
| Calcium | Yes |
| Gel | Yes |
| AGM | Yes |
| Lithium LiFePO4 | Yes |
For most applications, the BCDC1225D is suitable for battery bank sizes of 75Ah to 200Ah. For higher capacity systems over 200Ah, REDARC recommends the BCDC1240D.
🧠 Smart Charging Performance
| Charging Feature | Details |
|---|---|
| Maximum Rated Output Current | 25A |
| Nominal Output Power | 375W |
| Output Voltage | 12V DC |
| Maximum Charging Voltage | 15.3V |
| Battery Profiles | Standard Lead Acid, Calcium, Gel, AGM, LiFePO4 |
| Charging Goal | Designed to charge auxiliary batteries to 100% state of charge |
Large capacity battery banks may require a few cycles to fully charge.
🛡️ Proven Under Bonnet Construction
The REDARC BCDC1225D is designed for harsh vehicle environments.
| Build Feature | Details |
|---|---|
| Engine Bay Install | Yes |
| Cabin / Canopy Install | Yes |
| Trailer Install | Yes |
| Operating Temperature | -20°C to +80°C |
| Construction | Potted and ruggedised |
| Environmental Resistance | Designed for heat, water, dust, and vibration |
| No Load Current | <100mA |
| Standby Current | <8mA |
🔌 Installation Details
| Installation Feature | Details |
|---|---|
| Connector Type | Bare wire |
| Input Fuse Rating | 40A, not supplied |
| Output Fuse Rating | 40A, not supplied |
| Suitable for 12V Systems | Yes |
| Suitable for 24V Systems | Yes |
| Smart Alternator Support | Yes |
📏 Technical Specifications
| Specification | Details |
|---|---|
| Product | REDARC BCDC Classic 25A DC-DC Battery Charger |
| Model | BCDC1225D |
| Power Type | DC to DC |
| Battery Chemistry | Standard Lead Acid, Calcium, Gel, AGM, LiFePO4 |
| Input Voltage | 9V to 32V |
| Output Voltage | 12V DC |
| Maximum Charging Voltage | 15.3V |
| Maximum Rated Output Current | 25A |
| Nominal Output Power | 375W |
| Solar Input Voltage | 9V to 32V |
| Solar Switch-On Voltage | 9V |
| MPPT Solar Regulator | Yes |
| No Load Current | <100mA |
| Standby Current | <8mA |
| Input Fuse Rating | 40A, not supplied |
| Output Fuse Rating | 40A, not supplied |
| Connector Type | Bare wire |
| Operating Temperature | -20°C to +80°C |
📐 Dimensions & Weight
| Measurement | Details |
|---|---|
| Length | 165mm |
| Width | 120mm |
| Height | 37mm |
| Weight | 1kg |
⚠️ Fitment & Installation Note
Please confirm your required battery chemistry, battery capacity, vehicle voltage, alternator type, solar input requirements, cable sizing, fuse protection, mounting location, ventilation, and charger current compatibility before purchase or installation.
Important:
✅ Suitable for 12V and 24V vehicle systems
✅ Suitable for standard and variable voltage smart alternators
✅ 25A DC-DC charging output
✅ Separate DC and solar charging inputs
✅ Built-in MPPT solar regulator
✅ Green Power Priority™
✅ Suitable for AGM, gel, standard lead acid, calcium, and LiFePO4 batteries
✅ Suitable for engine bay, cabin, canopy, and trailer installations
✅ Typically suitable for 75Ah to 200Ah battery banks
✅ Input and output fuses are required but not supplied
⛔ Do not exceed the battery manufacturer’s recommended maximum charge current
⛔ For battery banks over 200Ah, a larger charger may be required
⛔ Professional installation is recommended for vehicle, marine, trailer, and auxiliary power systems
🔎 Why Choose the REDARC BCDC1225D Classic 25A?
The REDARC BCDC1225D Classic 25A DC-DC Battery Charger is designed for users who need rugged, under bonnet auxiliary battery charging with both alternator and solar input.
With 25A charging output, MPPT solar regulation, Green Power Priority™, lithium compatibility, 12V/24V vehicle support, smart alternator compatibility, and Australian-built durability, it is a dependable choice for 4WDs, caravans, campers, canopies, trailers, and remote touring setups.
📦 What’s Included
⚡ 1 x REDARC BCDC1225D Classic 25A DC-DC Battery Charger
🛒 Order with Confidence
Choose the REDARC BCDC1225D Classic 25A DC-DC Battery Charger for reliable auxiliary battery charging, solar integration, lithium-ready performance, smart alternator compatibility, and proven REDARC durability in harsh Australian conditions.
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