25A DCDC Battery Charger with Solar MPPT

Name: 25A DCDC Battery Charger with Solar MPPT
Brand: Big Red Gear
SKU: BRDC1225
Price: 249.0 AUD
Availability: InStock

$299.00 $249.00 Save $50.00

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Upgrade your vehicle's power setup with the Big Red Gear BRDC1225, the ultimate solution for maintaining a reliable dual battery system. Designed to maximise efficiency, this 12V DC-DC and solar battery charger supports seamless energy management, whether you're on the road or off the grid. With dual input operation, the BRDC1225 draws power from both your vehicle’s alternator and solar panels, prioritizing solar energy to reduce fuel consumption and emissions.

Featuring advanced MPPT solar technology and a 3-stage charging system, it ensures your auxiliary battery achieves optimal performance and longevity. Its compatibility with multiple battery types, including lithium, AGM, wet, and calcium, makes it the ideal choice for diverse setups. Built to withstand harsh environments, the rugged IP67-rated design resists dust, water, and vibration, ensuring durability under the bonnet or in-vehicle.

Whether you're adventuring off-road or managing demanding electrical systems, the Big Red Gear BRDC1225 guarantees peak performance for your dual battery system. Experience smarter energy management and reliable power wherever you go.

Features

Purpose-built to charge 12V auxiliary batteries from 12–24V vehicles, extending battery life
Switchmode technology delivers over 94% efficiency at full load
Dual input operation supports alternator and solar, prioritising solar when available
Advanced Solar MPPT tech maximises solar panel energy conversion
3-stage charging: bulk, absorption, and float for optimal battery care
Compatible with Lithium, AGM, Wet, and Calcium batteries (with equalisation)
Ignition connection works with or without smart alternators
Voltage drop compensation ensures consistent charging
Temperature compensation adjusts output to prevent overcharging
Remote status indication via LED for charge/fault monitoring
Protective features include spark-free, reverse polarity, over/under voltage, and temp protection

Technical Specifications

Specifications	BRDC1225
Alternator Input Voltage	11.9 – 32Vdc
Maximum Solar Input Voltage	28Vdc
Maximum Input Current	40A
Input Current (No Load)	20mA
Back Drain on Auxiliary Battery	9.5 – 10.5mA
External LED Output – Constant Current	4mA
Max Output Current	20A (9–11V), 25A (11–32V)
Input / Output Fuse Rating	50A (Not Supplied)
Maximum Output Power	385W
Solar Input Turn On Voltage	11V
Size	144 x 122 x 41.5 mm
Weight	910g
Operating Temperature	-10 to +80°C (ambient)
Charge Type	3 Stage
Bulk Charging	20A (9–11V), 25A (11–32V)
Absorption Voltage	LITH: 14.2V, AGM: 14.4V, WET/CALCIUM: 14.7V
Float Voltage	13.7V
Equalisation	3.8A to 16V, hold 1hr (5hr timeout)
Battery Capacity	75–300Ah
Supported Battery Types	Lithium, AGM, Wet, Calcium
EMC Compliance	C-Tick, CISPR 11, ECE R10
IP Rating	IP67

Operating Mode

Operating Mode	12V Vehicle	24V Vehicle
VSR Mode – Default (Ignition Override) Turn on / Turn off (Not Connected)	Turn on: 13.V – 20V Turn off: <12.8V	Turn on: 26.8–32V Turn off: <25.6V
Low Voltage Mode – Ignition Override cable Turn on / Turn off connected to ignition switch (ignition on)	Turn on: 12.2–20V Turn off: <11.9V	Turn on: 24.4–32V Turn off: <24V

What you get

DC/DC Charger
DC leads with 50A HD connectors
3 x Black 50A HD connectors
6 x 50A HD connector terminals
5 x Red mid terminals
2 x Black heat shrink
4 x Red heat shrink
5 x Black cable ties

DOWNLOAD INSTRUCTION MANUAL