Description
Crank & Cycle – Unmatched Power for Engine Start and Deep Energy Needs. The ultimate all-in-one battery for marine, RV, and off-grid applications.
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Cranking Capability:
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1,000A peak (5 s), 800A (10 s)
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Equivalent to 1,100+ CCA
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Supports outboards up to 350 HP
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Deep-Cycle Strength:
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300Ah capacity
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300A continuous discharge for extended, high-load usage
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🌡 Cold-Weather Ready + Smart Connectivity
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Internal Heating: Enables safe charging down to –20 °C (–4 °F)
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Bluetooth App + Victron CANbus:
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Monitor SOC, temp, voltage
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Seamless integration with Victron GX systems
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OTA firmware updates supported
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🛡 Durability Meets Safety
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IP67 Rated: Waterproof and dustproof housing
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Smart BMS: Protects against overcharge, over-discharge, short circuit, and thermal issues
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6,000+ Life Cycles
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11-Year Manufacturer Warranty
🔌 High Performance + Scalability
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Expandable System:
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Series: Up to 4 batteries (48V)
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Parallel: Up to 16 batteries (9,600Ah)
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300A Continuous Charging: Supports rapid replenishment after heavy use
📊 Specifications Summary
| Feature | Specification |
|---|---|
| Nominal Voltage | 12.8 V |
| Capacity | 300 Ah |
| Continuous Discharge/Charge | 300A |
| Peak Discharge | 1,000A (5 s) / 800A (10 s) |
| Charge Voltage Range | 10.0–15.4 V |
| Operating Temp (Charge) | –20 °C to 55 °C |
| Operating Temp (Discharge) | –20 °C to 60 °C |
| Dimensions (L×W×H) | 19.7″ × 10.5″ × 9.75″ |
| Weight | 81 lb |
| Cycle Life | 6,000+ cycles |
| Ingress Protection | IP67 |
| Warranty | 11 Years |
Ideal For
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High-horsepower marine engines & outboards
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RVs and van conversions with starter + house battery needs
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Off-grid homes, mobile clinics, and emergency backup setups
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Scalable energy storage via series or parallel connection
💡 Crank. Cycle. Endure.
The Epoch 12V 300Ah Pro Series LiFePO₄ Battery gives you unmatched dual-purpose power with built-in heating, smart integration, and rugged all-weather durability.
Frequently Asked Questions
Yes. All cells we sell are guaranteed authentic, Grade A, and brand new. Not reclaimed, used, or rewrapped. We also prioritize fresh manufacturing dates, so you’re not receiving cells that have been sitting around for years.
Some sellers offer Grade B cells that can have inconsistent voltage, higher internal resistance, reduced performance, or other issues. You will never receive a Grade B, reclaimed, or used cell from us.
These are sold as bare cells (no welded tabs or leads) unless the listing explicitly states otherwise.
To make pack building easier, our cells are sorted and batched for matching internal resistance, voltage, and date code, so they arrive ready to be assembled into a pack.
U.S. orders ship from Atlanta, Georgia.
For international orders outside the USA, we may ship from a different fulfillment hub depending on the product’s manufacturing location, to ensure faster and more efficient delivery.
Shipments within the USA, delivery in 1–3 days (up to 5). Expedited shipping available. International shipping varies—contact us to inquire.