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Redarc  |  SKU: BCDC1225D

REDARC DC Battery Charger - Dual Input - Under Bonnet - 25A DC

Rugged under bonnet 12V 25A DC to DC battery charger. Lithium Compatible

The REDARC BCDC1225D under bonnet Battery Charger is a 12V 25A 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 BCDC1225D features the same patented charging profiles as it’s predecessor along with a new lithium charging profile making the unit suitable for charging AGM, Gel, Standard Lead Acid, Calcium and LiFePO4 batteries.

For most applications, the BCDC1225D is suitable for battery bank sizes of 75-200AH.

For higher capacity needs of over 200AH, REDARC recommends the BCDC1240D.

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 - 32VDC
Solar Range 9V
Output Power 375W
Output Current 25A
No Load Current <100mA
Standby Current 8mA
Recommended Input Fuse 40A
Recommended Output Fuse 40A
MPPT solar regulator Yes
Operating temperature -10 to 80 degrees Celsius
Length 165mm
Width 120mm
Height 37mm
Warranty 2 Years
Weight 1 kg
Regular price $725.99
incl GST

Availability: OK

Contact us about this product

Have a question about one of our products or need help with your order? We're here to help. Contact our team on or send us a message using the contact form below, and we'll get back to you as soon as possible.

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

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:


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