EGIS 12V Triple-Battery Automatic Charging Relay

The EGIS 12V Triple-Battery Automatic Charging Relay combines two independent ACR functions in one compact device for three-battery electrical systems. By sharing available charging current among battery banks and isolating them when no charge source is present, it helps protect the starting bank while reducing the space, wiring, and off-state current required by separate charging relays.

A sealed integrated connector and included DT04 harness simplify installation and reduce exposed connections that can corrode. The unit provides a low-current output for remote status indication, thermal overload shutdown protection, and an ultra-low 1.3 mA off-state draw compared with approximately 20 mA for two typical ACRs. Adjustable off-voltage settings let the installer prioritize the auxiliary bank without sacrificing engine-starting reserve.

Start/engine isolation can protect sensitive electronics from voltage sag and spikes during cranking, while the start-assist input can bring additional battery capacity online when maximum cranking current is needed. The sealed high-temperature construction is intended for demanding installations, and EGIS includes a 4-year manufacturer warranty.

• Two independent ACR functions manage charging across three battery banks
• Shares charging sources when available and isolates batteries when charging stops
• 1.3 mA off-state current draw reduces parasitic battery drain
• Adjustable auxiliary-battery off voltage, start isolation, and start-assist inputs
• Sealed connector, DT04 harness, remote-status output, and thermal overload protection

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