Epoch Batteries 12V 334Ah MC Essential Series 12334A-MC | LiFePO4 Battery (4.28kWh) | Heated, Bluetooth, Victron Can

Specifications

Model / SKU: 12334A-MC

Series: Essential Series

Battery type: Heated Bluetooth deep-cycle LiFePO4 battery with Victron CAN communications

Primary use: High-capacity 12V house power for RVs, vans, off-grid cabins, and solar banks, installed in a dry, protected interior space

Chemistry: LiFePO4 / Lithium iron phosphate

Cell type: Grade-A prismatic LiFePO4

Cell configuration: 4S1P

Bluetooth: Yes — Epoch Li-Ion app, iOS and Android

Victron communications: Yes — Victron CAN-bus (GX / DVCC)

Internal heating: Yes — internal heating film; runs only while a charger is connected

Active balancing: Yes — 2A active balancing

Cycle life: 4,500+ cycles

Warranty: 11-year manufacturer warranty; register within 90 days of purchase

Nominal voltage: 12.8V

Nominal capacity: 334Ah

Energy stored: 4.28kWh (4,275Wh)

Operating voltage range: 10.0V – 14.6V

Maximum charge voltage: 14.6V

Max continuous discharge: 300A (150A recommended for daily use)

Max continuous charge current: 300A

Recommended charge current: Up to 167A (50% of capacity); up to 50% of bank capacity for parallel banks

Max discharge peak current: 600A for up to 10 seconds

Estimated runtime (80% planning energy, 3,420Wh): 100W ≈ 34.2 h · 500W ≈ 6.8 h · 1,000W ≈ 3.4 h · 3,000W ≈ 1.1 h

Series connections: Not approved for this model

Parallel connections: Max. 4 batteries (validated); up to 16 with Epoch design support

Maximum configuration: 4P: 1,336Ah / 17.10kWh, matched batteries and rated equipment

System design note: Use matched 12334A-MC batteries of the same age, capacity, and state of charge, within 0.05V of each other before connecting

Charge temperature range: -20°C to 55°C / -4°F to 131°F, with heating

Discharge temperature range: -20°C to 60°C / -4°F to 140°F

Recommended storage temperature: 0°C to 35°C / 32°F to 95°F

Low-temperature charge protection: Heater on below 0°C (32°F) while a charger is connected; charging resumes above 5°C (41°F)

Length: 15.35 in / 390 mm

Width: 8.07 in / 205 mm

Height: 11.02 in / 280 mm

Overall dimensions: 15.35 in L × 8.07 in W × 11.02 in H (390 × 205 × 280 mm)

Weight: 75 lb / 34 kg

Case material: Powder-coated steel (metal) enclosure

Enclosure protection: IP21 (IEC 60529) — indoor, drip resistant; dry indoor installation only, not submersible

Terminal type: M10 female

Terminal torque: 13–17 Nm (115–150 in-lb)

Mounting orientation: Upright; do not invert during operation

In the box: One battery and two M10 stainless terminal bolts with washers

Bulk / absorption voltage: 14.2V – 14.4V

Absorption time: End when current falls to C/20 (16.7A) or after 15 minutes, whichever comes first

Float voltage: 13.3V – 13.6V; disabled is preferred

Re-bulk voltage: 13.2V

Equalization: Disabled

Temperature compensation: 0 mV/°C (disabled)

Charge temperature range: -20°C to 55°C / -4°F to 131°F (with internal heating)

BMS high voltage cutoff: 14.6V

Overcharge protection: Yes

Over-discharge protection: Yes

Over-current protection: Yes

Short-circuit protection: Yes

High and low temperature disconnects: Yes

Certifications: UL 1642, UL 9540A, IEC 62619:2022

Compliance marks: CE, RoHS

Transport: UN 38.3, Class 9

In the Box

• 1 x Epoch 12V 334Ah MC Essential Series LiFePO4 battery (12334A-MC)
• 2 x M10 stainless terminal bolts with washers

12334A-MC Spec Sheet
12334A-MC Technical Data Sheet
12334A-MC User Manual
Epoch LiFePO4 Safety Data Sheet

Epoch Batteries Limited Warranty

Warranty Period
11-year manufacturer warranty; register within 90 days of purchase for full coverage

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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