Epoch 4-Bank 12V Marine Battery Charger | 10A Per Bank
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Short Description:
Short Description:
Epoch 4-Bank 12V Marine Battery Charger | 10A Per Bank
The Epoch 4-bank 12V marine battery charger gives each of up to four 12V batteries its own independent 10A charging channel, up to 40A in total. It is a permanently mounted onboard charger for bass boats and other multi-battery marine systems, including the common setup of three 12V trolling batteries plus one cranking or house battery. Each bank has its own LiFePO4, lead-acid or AGM setting, BMS activation control and charge-status display. Explore more options in our lithium battery collection.
Key features
- Four independent 12V banks: one red/black output pair per battery, each rated at 10A (up to 40A aggregate nominal when all banks deliver full current).
- Selectable chemistry per bank: LiFePO4, lead-acid or AGM, set individually with a dedicated MODE control for each bank.
- Lithium BMS activation: select Lithium mode, then hold MODE for about 3–5 seconds to wake a compatible sleeping lithium battery.
- Automatic full-charge shutdown: LED indicators show AC power, battery type and charge status for each bank (red = charging, green = full).
- IP67 epoxy-filled enclosure: for correctly installed onboard environments.
- Active cooling: aluminum housing, bottom cooling plate and a temperature-controlled waterproof fan.
- Built-in protection: short-circuit, reverse-connection, overcharge, overtemperature and no-load protection.
- Secure connections: pre-wired M8 ring terminals (red positive, black negative).
- 2-year limited warranty: free repair or replacement.
Charge a whole four-battery boat from one AC connection
A common tournament-bass setup uses three 12V batteries in series for a 36V trolling-motor bank, plus a fourth 12V battery for engine starting, electronics and accessories. This charger gives every battery its own charging channel, so you plug in once and charge overnight without carrying four separate chargers. Connecting one bank to each 12V battery also helps reduce battery-to-battery imbalance within an approved 24V, 36V or 48V series string. Internal cell balancing is still handled by each battery's BMS.
Series-connected banks
The manufacturer does not publish a formal galvanic-isolation rating. Before charging a series-connected bank with the interconnect jumpers left in place, confirm the approved method in the charger manual and from each battery manufacturer. Using two banks on the same battery is not recommended.
Built for the marine environment
The enclosure is filled with epoxy resin for IP67 ingress protection. Keep the AC plug and the battery ring terminals dry and protected, and do not submerge the charger or use it with a wet plug. This charger is not fanless: keep more than 30 mm of clearance and never block the fan or the heat-dissipation surfaces.
Voltage limits
Every output is 12V only. Do not connect one charger bank across an entire native 24V, 36V or 48V battery, because every red/black pair must connect to one compatible 12V battery with the mode set to that battery's chemistry. The battery type cannot be changed while a bank is charging, so disconnect that bank's ring terminals before changing its mode. 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-4BAY-12V10A |
| Type | Four-bank onboard marine battery charger |
| AC input | 105–125 VAC, 60 Hz, integrated grounded AC cord with North American plug (not a universal 120/240V charger) |
| Outputs | 4 independent banks, 12 V / 10 A each (40 A aggregate nominal) |
| Supported batteries | 12V only on every bank; LiFePO4, lead-acid or AGM, selected per bank |
| Lithium BMS activation | Select Lithium mode, hold MODE for about 3–5 seconds |
| Output connectors | M8 ring terminals (red positive, black negative) |
| Replacement fuse | 15 A for each 12V / 10A output |
| Indicators | AC power, battery type per bank, charge status (red = charging, green = full) |
| Protection | Short-circuit, reverse-connection, overcharge, overtemperature and no-load protection |
| Enclosure | IP67, pure epoxy-filled, aluminum housing with bottom aluminum cooling plate |
| Cooling | Temperature-controlled waterproof fan |
| Working temperature | -20°C to 40°C (-4°F to 104°F) |
| Dimensions | 284 × 245 × 99 mm (about 11.18 × 9.65 × 3.90 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
Mount the charger on a rigid surface using the 6.5 mm mounting holes and M6 fasteners, and keep the cooling surfaces clear. Connect red to battery positive and black to negative, protect all leads from abrasion, and select the correct mode for each bank before energizing the AC supply. Verify voltage, polarity, chemistry, temperature and charge-current limits first. The charger does not replace the boat's battery switches, source protection or branch overcurrent protection. Disconnect AC before servicing battery leads, never charge a frozen or damaged battery, and use a grounded, correctly rated outdoor or marine extension cord and a protected 120V outlet if extra reach is needed.
Need help choosing a charger or batteries for your boat? Browse the full battery collection at M-Oceans or contact us for advice.