REDARC BCDC1225D DUAL BATTERY ISOLATOR SYSTEM DC TO DC MPPT SOLAR AGM & LITHIUM
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REDARC BCDC1225D DUAL BATTERY ISOLATOR SYSTEM DC TO DC MPPT SOLAR AGM & LITHIUM

REDARC BCDC1225D DUAL BATTERY ISOLATOR SYSTEM DC TO DC MPPT SOLAR AGM & LITHIUM

REDARC BCDC1225D DUAL BATTERY
List price: $550.00  
$509.00
You save: $41.00 (7%)
10 days
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Minimum quantity for "REDARC BCDC1225D DUAL BATTERY ISOLATOR SYSTEM DC TO DC MPPT SOLAR AGM & LITHIUM" is 1.

How does the REDARC BCDC1225D work?

Made in Australia the BCDC1225D is a smart charger which allows charging two batteries from the alternator or a solar panel using MPPT solar charging. MPPT stands for Maximum Power Point Tracking which maximizes the solar current at any voltage, what you can see as a more efficient solar power regulator. In addition, the BCDC1225D has a Green Power Priority built-in, this means that it will select power generated by solar before the alternator.

The reason I replaced the simple isolator dual battery system by this battery charger is because it uses a multi-stage charging algorithm which allows the battery to be charged to the full 100%. This is also important for cases when the auxiliary battery is far away from the alternator, like in a camper trailer or caravan. The charger contains its own isolator to prevent over discharge of the starter battery. This means that the isolator stops further charging of the auxiliary battery from the starter battery when the alternator is turned off.

The reason the BCDC1225D is able to charge the batteries to the full 100% is because of the used 3 stage charging. While the alternator just pumps energy in the batteries, the BCDC1225D uses 3 different charging steps. The first stage is the boost mode which charges the battery at a constant amperage until the battery is charged for 75%. The second stage is absorption, which uses the same high voltage as stage one but now with an adjusted amperage till the battery reaches full capacity (which differs for the type of battery). The third stage is a floating stage in which is a trickle charge to prevent discharging of the battery.

More battery and solar power

To be able to stay longer of the grid, I decided that I wanted an extra battery (making the total 3).However, only so much can be fitted in the bonnet. I decided to place an additional battery in the canopy. My choose fell on a 125Ah AGM battery. I connected this one to a roof solar panel and controller. The great benefit of AGM batteries is that they are safe to use in enclosed spaces. This is important if I decide to sleep in the canopy. In addition to the roof solar panel, I also carry a portable solar panel to charge a 40Ah AGM battery for in the kayak. I use anderson plugs for all batteries, making it easy to switch everything around if needed.

Input (Operating) Voltage 9 - 32VDC
Output System Voltage 12VDC
Maximum Charging Voltage 15.3V
Output Current Rating (Cont.) 25A
Input Current (Max.) 25A
Input Fuse Rating 40A
Output Fuse Rating 40A
Warranty 2 Years
Standby Current Draw <100mA
Output Power 375W
Width (mm) 120
Height (mm) 37
Type Approval CE
Length (mm) 165
Weight (kg) 0.85
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