Epoch Batteries 4-Bank 12V Marine Battery Charger CHG-4BAY-12V10A | 10A Per Bank (40A Total), Onboard, IP67

Specifications

Brand: Epoch Batteries

Product: 4-Bank 12V Marine Battery Charger | 10A Per Bank

Model / SKU: CHG-4BAY-12V10A

Product type: Four-bank onboard marine battery charger with pre-wired M8 ring terminals

Charging banks: 4 independently operating 12V banks

Input voltage: 105–125VAC

Input frequency: 60Hz

AC connection: Integrated grounded AC cord and North American plug

Input limitation: Not a universal 120/240V charger

Number of outputs: 4

Bank voltage: 12V per bank

Bank current rating: 10A per bank

Aggregate nominal bank rating: 4 × 10A = 40A when all banks deliver full rated current

Battery connection rule: One red/black output pair connects to one individual 12V battery

Output connectors: M8 ring terminals; red positive and black negative/chassis

Replacement fuse: 15A for each 12V / 10A output

Supported battery voltage: 12V batteries only on every bank

Selectable chemistries: LiFePO4, lead-acid, or AGM, selected independently per bank

Mode control: Dedicated MODE control for each charging bank

Changing battery type: Cannot be changed while that bank is charging; disconnect its DC output before changing mode

Lithium BMS activation: Select Lithium mode, then hold MODE for approximately 3–5 seconds

Cold-weather lithium charging: Do not charge below 0°C / 32°F unless the battery has approved heating or manufacturer permission

AC power indication: Yes

Battery-type indication: Yes, individually by bank

Charging indication: Red

Fully charged indication: Green

Full-charge behavior: Automatically shuts down charging after the battery reaches full charge

No-load behavior: No normal charging output when no compatible battery is connected

Ingress protection: IP67 enclosure

Sealing method: Filled with pure epoxy resin

Housing: Aluminum housing with bottom aluminum cooling plate

Cooling: Temperature-controlled waterproof cooling fan; not fanless

Marine-use boundary: Do not submerge; keep AC plug and ring terminals dry and protected

Short-circuit protection: Yes

Reverse-connection protection: Yes

Overcharge protection: Yes

Overtemperature protection: Yes

No-load protection: Yes

Wrong-voltage limitation: Protection features do not permit use on a native 24V, 36V, or 48V battery

Working temperature: -20°C to 40°C / -4°F to 104°F

Nominal working temperature: 25°C / 77°F

Product dimensions: 284 × 245 × 99mm / approximately 11.18 × 9.65 × 3.90 in

Mounting-hole diameter: 6.5mm

Recommended mounting hardware: M6 screws appropriate for the mounting surface

Required clearance: More than 30mm; do not obstruct the fan or heat-dissipation surfaces

Common 36V application: Three separate 12V batteries in series, with one charger bank connected to each battery

Fourth-bank application: One separate 12V cranking, starting, house, or electronics battery

Series-jumper guidance: Verify the supplied charger manual and battery manufacturer's approved in-place charging method

Balance clarification: The charger can charge each 12V battery individually; internal cell balancing remains the battery BMS's function

Doubling banks on one battery: Not recommended

CHG-2BAY-12V36V / CHG-4BAY-12V10A User Manual

Epoch Batteries Limited Warranty

Warranty Period
2-year limited warranty on Epoch-branded chargers (Epoch general warranty terms)

Epoch Batteries-branded products are covered against qualifying defects in materials and workmanship for the applicable warranty period, subject to Epoch's model-specific remedy schedule and the terms of its warranty policy. Epoch-branded chargers carry a 2-year limited warranty and accessories (such as fuel gauges and voltage reducers) a 1-year limited warranty, from the original purchase date.

Registration
Register your battery with Epoch within 90 days of purchase for full warranty coverage. If it is not registered within that time, the warranty period begins from the battery's original manufacturing date. Proof of ownership is required for any claim, and coverage is non-transferable and applies only to the original purchaser.

Remedy
After inspection and testing, Epoch will provide the applicable remedy for a qualifying manufacturing defect: an approved repair, a replacement, or a comparable-product offer according to the model's schedule. Typical repair turnaround is 3–10 business days once the product is received.

Exclusions
Coverage may be denied when a failure is caused by misuse, improper handling, installation or storage, or use outside the product's specifications. Examples include an unsecured battery; loose, corroded or improperly connected terminals; series or parallel connections beyond the manufacturer's recommendations; reverse polarity or short circuits; impact, fire or water submersion; storage above 140°F or below -40°F; prolonged storage fully discharged or batteries left uncharged for more than three months; poor crimps, undersized cables or damaged wiring; opened, modified or tampered products; and use in applications the battery was not designed for, including repeated engine starting on non-cranking models.

Obtaining Warranty Service
Start a claim through the Epoch Batteries Warranty Portal with your model and serial number, proof of purchase, a description of the issue and supporting photos or videos. If approved, Epoch provides an RMA number and packing instructions. Do not ship a product without a valid RMA. The customer arranges and pays for shipment to Epoch, packaged in compliance with lithium battery shipping rules. Epoch Batteries can be reached at 1-888-501-1846 or support@epochbatteries.com.

Visit Epoch's Warranty Page to review the full warranty terms.

Shipping is typically through freight carriers and the actual shipping time is contingent on your location and the specific warehouse dispatching your order. Please allow for a 1-3 business day processing period before shipment, and an estimated delivery time of up to 7 business days. Your confirmation email will include delivery details and we will send you a tracking number as soon as one is available. If you ordered several separate items, you may receive multiple tracking numbers. Once the item has been shipped, the freight service will contact you to coordinate the date and time of delivery. If you require any special accommodations during delivery please let us know as soon as possible and let the delivery company know when arranging the appointment.

Typically, orders will be dropped off either curbside or outside your front door or garage. It is your responsibility to bring the order inside or to its final destination and to remove any existing items.

Depending on the item, parts may be shipped in multiple boxes, and assembly may be required. When your order is delivered, please check that you have all pieces of the item and that nothing is damaged. If your order is damaged during transit and external damage is visible, note the damage immediately, write it on the delivery documents, take photos and/or videos, and refuse shipment. If there is no visible external damage, accept the package but note “subject to concealed damage” on the delivery documents. Any damage upon delivery needs to be reported within 24 hours of delivery or you may not be eligible for a refund. For additional information on submitting claims, as well as incorrect item exchanges, and replacements, please see our Refund Policy.

For more information about shipping, please visit our complete Shipping Policy.

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