REDARC DC Battery Charger - Dual Input - Under Bonnet - 40A DC
Rugged under bonnet 12V 40A DC to DC battery charger. Lithium Compatible
The REDARC BCDC1225D under-bonnet Battery Charger is a 12V 40A DC to DC battery charger, capable of high performance in engine bay installations, potted to survive and thrive against heat, water and dust.
Featuring a Maximum Power Point Tracking (MPPT) solar regulator, the BCDC1225D Classic will charge from both solar and the alternator simultaneously. And, with built-in 'Green Power Priority' it will select solar charging first, meaning less load on the alternator.
Suitable for 12 or 24-volt vehicle systems, the unit will also work with either standard or variable/smart alternators.
The BCDC1240D also comes with patented charging profiles, including a lithium charging profile. The 'Dual' input range will continue to charge all other types of batteries including AGM, GEL, standard lead acid and calcium.
As a guide, the BCDC1240D is used for battery bank sizes over 200AH.
For smaller batteries of 75-200AH REDARC recommends the BCDC1225D.
Battery Charger Features
- Separate DC and solar charging inputs
- Maximises the performance and life of your auxiliary battery
- Simultaneous DC and solar charging with Green Power Priority
- Suits 12V/24V standard and variable voltage/smart alternators
- Suitable for AGM, GEL, standard lead acid, calcium and Lithium (LiFePO4) batteries
- Suitable for use on vehicles with conventional alternator charging systems
Solar Regulator Specifications
| Input Charge | Simultaneous Vehicle & Solar |
|---|---|
| Installation Type | In-cabin or under bonnet |
| Input Voltage range | 9-32V |
| Solar Range | 9-32V |
| Solar Switch on Voltage | 9V |
| Output Power | 600W |
| Output Current | 40A |
| No Load Current | <100mA |
| Standby Current | <8mA |
| Recommended input fuse | 60A |
| Recommended output fuse | 60A |
| MPPT solar regulator | Yes |
| Operating Temperature | -10 to +80 degrees celsius |
| Length | 165mm |
| Width | 120mm |
| Height | 37mm |
| Weight | 1 kg |
| Warranty | 2 Years |
Contact us about this product
Contact us about this product
Delivery and Shipping
Delivery and Shipping
Orders are dispatched once payment has been confirmed. For courier deliveries, orders placed before the 1:30pm weekday cut-off are typically processed for the next available dispatch.
Delivery timeframes:
- Standard NZ courier: Dispatched the next working day after payment confirmation.
- Rural deliveries: Allow up to 5 working days.
- Large or bulky orders: Sent via bulk freight and may take 5-10 working days.
- International Airmail: Typically 3-14 days, with a maximum parcel weight of 20kg.
- International Courier: Available at an additional cost, with tracking included and a delivery target of 2-6 days. Maximum parcel weight is 30kg.
We accept returns of unused items in their original packaging within 14 days of purchase. Please contact us first to obtain a return authorisation before sending any items back.
Once your return is received and approved, a refund or store credit will be issued.
Please note:
- Special-order or imported items may not be eligible for return. In some cases, returns may be considered if the customer covers any associated freight costs.
- Refunds for credit card and PayPal purchases are subject to a 3% non-refundable transaction fee.
- Most returns incur a 10% restocking fee, capped at $25.
- Original shipping costs are non-refundable.
- Electrical items that have been used, damaged, or returned without their original packaging cannot be returned.
- Boat rollers and certain products supplied from the Rubbermark warehouse are subject to a 15% restocking fee.
For full details, please see our complete Delivery & Shipping Policy
Return Policy
Return Policy
We accept returns of unused items in their original packaging within 14 days of purchase. Please contact us first to obtain a return authorisation before sending any items back.
Request a return here.
Once your return is received and approved, a refund or store credit will be issued.
Please note:
- Special-order or imported items may not be eligible for return. In some cases, returns may be considered if the customer covers any associated freight costs.
- Refunds for credit card and PayPal purchases are subject to a 3% non-refundable transaction fee.
- Most returns incur a 10% restocking fee, capped at $25.
- Original shipping costs are non-refundable.
- Electrical items that have been used, damaged, or returned without their original packaging cannot be returned.
- Boat rollers and certain products supplied from the Rubbermark warehouse are subject to a 15% restocking fee.
For full details, please see our complete Returns Policy:
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.


