4 Stage 40A DC to DC Boost Charger

via Jaycar

A significant voltage drop can occur in dual battery systems where the auxiliary battery is some distance from the main battery. A DC to DC boost charger is the solution to that problem. This DC to DC boost charger is capable of taking an 8-16VDC input voltage, and giving a stable, regulated 13.8V/14.4V 4-stage charger output to give your auxiliary battery a full 100% charge. Even if the power is coming down a long cable and has suffered some voltage drop, this charger will boost the voltage back up. It can also be configured to work as a 13.8V power supply, again with the ability to boost voltage. Charge voltages are adjustable to suit different types of lead acid and LiFePO4 batteries via some DIP switches, and input/output connections are made with heavy duty terminals. Output current is rated at 40A to ensure a quick charge. An upgraded built-in microprocessor makes the dip-switch setting more friendly.

Input voltage: 8 - 16VDC
Output current: 40A max
Bulk/absorb charge: 14.4 - 14.8V selectable
Float charge: 13.2V - 13.8V selectable
Constant Voltage feature: 12VDC
Power supply mode: 13.8Vdc
Efficiency: 85 - 90%


Length 260mm
Width 140mm
Height 80mm
Weight 1.7kg
Warranty: 12 Months