The charger monitors a compatible 12V or 24V starter-battery system and converts that DC power into a regulated 36V / 10A charging output for one auxiliary battery. With a 12V source it starts above 13.8V and stops below 13.0V; with a 24V source it starts above 26.8V and stops below 25.2V. This allows charging while the source system is being replenished without a direct, uncontrolled battery-to-battery connection.

The automatic voltage thresholds are designed to stop charging when source-battery voltage falls below the published cutoff. The charger also enters hibernation after approximately 20 minutes at idle while continuing to monitor voltage. Correct wiring, a healthy starting battery, and a properly sized alternator are still essential.

Yes. The published input range is 13–30VDC, so the charger can use a compatible 12V or 24V starter-battery source. For a 24V source, charging starts above 26.8V and stops below 25.2V. A 36V battery is not supported as the input source.

Epoch publishes this charger for one compatible 36V auxiliary battery. A three-battery 12V series string may require individual-bank charging and balancing according to the battery manufacturer's instructions. Do not assume that charging the full 36V string alone will keep the three 12V batteries balanced.

No. A charge-on-the-run charger supplements the trolling battery while the source engine or charging system is active. The 36V output is limited to 10A, so short boat runs may restore only part of the energy used. A compatible AC onboard charger is still recommended for a complete dockside recharge and periodic balancing.

The charger regulates the auxiliary-battery output to 36V / 10A, avoiding a direct connection between the two battery systems. That does not guarantee compatibility with every alternator. The output represents roughly 360W before losses, so input current on a 12V system can be substantial. Verify the outboard's rated charging output, existing electrical loads, cable sizing, and available alternator margin before installation.

No. Epoch lists the CHG-DC-36V as non-isolated. Voltage-sensing start and stop control is not the same as galvanic isolation. Correct polarity, common-ground planning, cable routing, fusing, and adherence to the supplied wiring diagram are critical.

No. It uses an aluminum housing and bottom cooling plate together with a waterproof cooling fan. Keep the fan and cooling surfaces clear, provide more than 30mm of installation clearance, and do not mount the unit where airflow is obstructed.

The enclosure is epoxy-filled and rated IP67, but Epoch still says not to expose the plug or ring terminals to rain or snow. Do not intentionally submerge the charger. Mount it securely in a protected, ventilated location where cables, terminals, glands, and the cooling fan can be inspected.

Yes. The front MODE button provides selectable 36V LiFePO4, lead-acid, and AGM charging modes. Complete the battery-type selection before charging. The setting cannot be changed during charging; disconnect the output ring terminals before selecting a different mode.

Yes, for a compatible sleeping LiFePO4 battery. Select LiFePO4 mode and hold the MODE button for approximately three seconds to activate the BMS. This feature cannot repair a damaged, frozen, or unsafe battery.

No. Do not charge a LiFePO4 battery below 0°C / 32°F unless the battery has an approved internal heating system or its manufacturer specifically permits below-freezing charging. The charger's operating-temperature range does not override the battery's low-temperature charging limit.