How Purkeys’ Liftgate Charging Systems Share the AUX Circuit

One of the biggest challenges for fleets with liftgates is keeping the liftgate batteries charged. Purkeys DIRECT and SELECT charging systems can help keep batteries charged by utilizing a DC-DC converter at the batteries. It steps up the voltage to the liftgate batteries and the control unit helps to maximize the charge time.

Purkeys offers many power source/path options but when the charging system is powered by the 7-way it shares the AUX circuit with the antilock braking system (ABS) and possibly other safety systems such as active rollover protection (ARP) systems. Obviously, these are very important systems that need to function at all times for the safety of the driver and heavy-duty vehicle.

This is why Purkeys developed a smart module in the charging systems that will read the voltage coming from the 7-way to the trailer and will stop charging the liftgate batteries if the voltage drops below a certain level. According to Purkeys’ Sales and Service Engineer Charley Gipe, “If the voltage applied to the front of the trailer is 11 volts or less, the electronics for the liftgate charging system are programmed to make sure the safety systems have power to operate.”

This safety feature enables fleets to ensure their drivers and vehicles are protected while on the road while getting the most charge time to the liftgate batteries.

Are you dealing with liftgate battery issues? Are you looking for advice? We welcome your comments and questions below.

Learn More about Purkeys and Liftgate Charging Systems

Click here to watch our On-Demand webinar and learn more about Purkeys’ DIRECT liftgate charging system.

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