Epoch 12V to 36V Marine DC-to-DC Charger
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Short Description:
Short Description:
Epoch 12V to 36V Marine DC-to-DC Charger | Charge on the Run
The Epoch 12V to 36V marine DC-to-DC charger converts power from a compatible 12V or 24V starter-battery system into a regulated 36V / 10A charge for a trolling-motor battery, so you can recharge the front of the boat while the outboard is running. Automatic voltage sensing, selectable LiFePO4, lead-acid and AGM modes, lithium BMS activation and an IP67 epoxy-filled enclosure make it a practical run-and-gun charging solution for bass boats and tournament anglers. Explore more options in our lithium battery collection.
Key features
- 36V / 10A output: about 360 W nominal charging power on the 36V side before conversion losses.
- 12V or 24V source: accepts a compatible starter-battery system within the 13–30 VDC range. 36V input batteries are not supported.
- Automatic start and stop: with a 12V source, charging starts above 13.8 V and stops below 13.0 V; with a 24V source, it starts above 26.8 V and stops below 25.2 V. This helps preserve starting-battery reserve when source voltage falls.
- Selectable 36V profiles: LiFePO4, lead-acid or AGM, chosen with the MODE button before charging.
- Lithium BMS activation: select LiFePO4, then hold MODE for about 3 seconds to wake a compatible sleeping lithium battery.
- Automatic hibernation: enters low-activity monitoring after about 20 minutes at idle and resumes when the charging threshold returns. Hold MODE for 6 seconds to switch off and short-press to wake.
- LED status: shows power, battery type, charging, full charge and polarity faults.
- IP67 epoxy-filled enclosure with an aluminum housing, cooling plate and waterproof fan.
- Built-in protection: short-circuit, reverse-connection, overcharge and overtemperature protection.
- 2-year limited warranty: free repair or replacement.
Charge on the run
Most bass boats split their power between a 12V starting system and a separate high-voltage trolling system. This charger monitors the source side, steps the voltage up and applies a controlled 36V charge whenever the source rises above the engine-running threshold, with no direct battery tie and no manual ignition trigger. It supplements trolling-motor energy but is not a replacement for a full dockside AC recharge.
Plan your alternator capacity
A 36V / 10A output represents roughly 360 W before losses, so the input-side current on a 12V system can be substantial and is not a fixed 10 A. Before installation, confirm the outboard or vehicle charging-system rating, existing loads, available current margin, cable size, fuse protection and voltage drop. The manufacturer does not list an input-current rating on the product page.
Non-isolated design: wiring matters
This is a non-isolated charger, so voltage-sensing control does not mean galvanic isolation. The red and black conductors within the same cable jacket must connect to the same battery, and grounding and polarity must be planned carefully. Follow the supplied wiring diagram and verify grounding, polarity, fusing and system compatibility before use.
Built for the marine environment
The enclosure is filled with pure epoxy resin for a high level of ingress protection. Do not intentionally submerge the unit, and keep the ring terminals, cables and connections protected from rain, snow, standing water and damage. This charger is not fanless: keep more than 30 mm of clearance and never block the cooling surfaces or the fan. Do not charge lithium batteries below 0°C (32°F) unless the battery has approved heating or its manufacturer permits it.
Technical specifications
| Model / SKU | CHG-DC-36V |
| Type | Single-bank, non-isolated marine DC-to-DC battery charger |
| Source input | Compatible 12V or 24V starter-battery system, 13–30 VDC (36V input not supported) |
| 12V source thresholds | Starts above 13.8 V, stops below 13.0 V |
| 24V source thresholds | Starts above 26.8 V, stops below 25.2 V |
| Output | 36 V / 10 A (about 360 W nominal), one compatible 36V auxiliary battery |
| Battery modes | 36V LiFePO4, lead-acid or AGM (MODE button) |
| Connections | Pre-wired ring-terminal leads (red positive, black negative) |
| Replacement fuse | 15 A |
| Indicators | Normal charge: POWER solid green, CHARGING solid red; full charge: both solid green |
| Protection | Short-circuit, reverse-connection, overcharge and overtemperature protection |
| Enclosure | IP67, pure epoxy-filled, aluminum housing with bottom cooling plate and waterproof fan |
| Working temperature | -20°C to 40°C (-4°F to 104°F) |
| Dimensions | 250 × 95 × 68 mm (about 9.84 × 3.74 × 2.68 in) |
| Mounting | 6.5 mm holes, M6 screws recommended, more than 30 mm clearance |
| Warranty | 2-year limited warranty: free repair or replacement |
Installation notes
Connect the labeled source leads to the compatible 12V or 24V starter-battery system, select the auxiliary battery chemistry and connect the 36V output using the supplied wiring diagram. The battery type cannot be changed while charging, so disconnect the output ring terminals before selecting a different mode. Secure the charger to a rigid surface and support the leads against vibration and abrasion. Use appropriate input and output fusing, disconnects and marine-grade cables sized for the current, run length and voltage drop, and follow the battery manufacturer's approved charging and balancing method for any 36V bank built from series-connected batteries. Disconnect and isolate the batteries before service, and never charge a frozen, damaged or unsupported battery.
Need help choosing a charger or batteries for your boat? Browse the full battery collection at M-Oceans or contact us for advice.