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When the grid blinks out, the mercury drops, or the nearest power hookup is three days behind you on a dirt road, what's in your battery box matters more than just about anything else. The Epoch Batteries 12V 300Ah (3.84kWh) Pro Series was engineered for exactly those moments not the easy ones. This is a professionally spec'd, dual-purpose LiFePO4 powerhouse purpose-built for homeowners building serious backup systems, RVers who refuse to compromise, off-grid dwellers who live beyond utility lines, and mobile operators who measure downtime in dollars.
With 3.84 kilowatt-hours of clean, usable energy in a Group 8D form factor, built-in internal heating for sub-zero charging capability, native Victron CANBUS communication, IP67 waterproof and dust-proof construction, and 6,000+ cycle life backed by an 11-year manufacturer's warranty, the Epoch 12V 300Ah Pro Series doesn't just promise performance it delivers it, season after season, system after system.
At Outbound Power, power isn't a hobby it's what we do. We've helped homeowners build grid-independent backup systems, guided RVers through full battery bank upgrades, and helped off-grid builders design storage arrays that carry real loads through real seasons. We know these products because we know the applications they serve.
Built-in internal heating lets this battery charge safely down to -4°F (-20°C). Most lithium batteries fail in winter. This one keeps working no matter how cold it gets outside — perfect for cold climates and winter camping.
Connect via Bluetooth on iOS or Android to check battery health, voltage, and charge level in real time. No guessing, no crawling into tight spaces. Everything you need to know lives right on your screen.
Native CANBUS communication links directly to the full Victron ecosystem. Your inverter, solar controller, and battery all work together as one smart system giving you accurate readings and better performance from every component you own.
Connect up to 16 batteries in parallel or 4 in series to reach 48V. Start small and grow your system over time without replacing anything. Your first battery becomes the foundation of something much bigger.
Rated IP67, this battery is fully sealed against dust and water. Install it under your RV, on a boat, or on a worksite and it holds up. Tough conditions are exactly what it was built for.
With 6,000-plus charge cycles and an 11-year manufacturer warranty, this battery will likely outlast the equipment around it. Lead-acid batteries typically last 300 to 500 cycles. This one keeps going long after those give up.
A 1,000-amp peak discharge handles both engine starting and heavy appliance loads. You get dual-purpose performance in one battery powerful enough to crank large marine motors and steady enough to run your system all day.
Epoch Batteries provides a limited warranty policy, ensuring the absence of defects in materials, workmanship, and performance during the warranty period.
Epoch Batteries 12V 300Ah (3.84kWh) Pro Series Specifications |
|
|---|---|
| Cell Configuration | 4S3P |
| Chemistry | LiFePO4 |
| Ah Capacity | 300Ah |
| Max Continuous Discharge Current | 300A |
| Max Charge Current | 300A |
| Max Discharge Peak Current | 1,000A @ 5s |
| Series / Parallel Configuration | Max (4) in Series / Max (16) in Parallel |
| Voltage | 12.8V |
| Max Charge Voltage | 15.4V |
| Operating Voltage Range | 10.0V – 15.4V |
| 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) |
| Storage Temperature | 0°C to 35°C (32°F to 95°F) |
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