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When your power source quits because of cold weather, a dead BMS, or a battery that just can't keep up, adventures get cut short and workarounds get expensive. The Epoch Batteries 12V 300Ah (3.84kWh) Essential Series is built to make sure that never happens. This high-capacity lithium iron phosphate (LiFePO4) deep cycle battery packs 3.84 kilowatt-hours of usable, real-world energy into a single robust unit with internal heating, smart Bluetooth monitoring, and a battery management system that quietly protects your investment around the clock.
Whether you're an RVer pushing into colder climates, a homeowner building a serious solar backup system, or a contractor keeping tools charged on a remote worksite, the Epoch Essential Series 300Ah delivers the power, intelligence, and longevity to match your lifestyle not limit it.
At Outbound Power, we specialize in portable and backup power solutions for people who actually use their systems in real weather, real terrain, and real conditions. The Epoch Batteries 12V 300Ah (3.84kWh) Essential Series earns its place in our catalog because it delivers exactly what our customers need: high capacity, intelligent monitoring, all-season performance, and the kind of long-term value that makes the upfront investment worthwhile.
The built-in internal heater warms the battery before charging starts. This means you can safely charge in conditions as cold as -4°F (-20°C) perfect for winter camping, cold-weather RVing, or off-grid living in harsh climates.
Bluetooth connects the battery to a free iOS or Android app. You can see voltage, charge level, temperature, and current in real time. No guessing, no extra gadgets — just quick, clear answers straight from your smartphone.
With 300Ah and 3.84kWh of usable energy, this battery can keep your lights, fridge, and key appliances running for hours. It stores roughly the same energy as three standard 100Ah lithium batteries in one compact unit.
The built-in Battery Management System (BMS) automatically prevents overcharging, over-discharging, short circuits, and overheating. It works quietly in the background so your equipment stays safe and your battery lasts as long as possible.
Rated for 4,000+ charge cycles, this battery keeps performing year after year without water top-offs, terminal cleaning, or equalizing charges. Just install it, use it, and let it work that's the whole routine.
You can connect up to four batteries in series (up to 48V) or in parallel (up to 1,200Ah). This makes it easy to start small and expand your energy storage later without buying an entirely new system.
Epoch stands behind this battery with one of the longest warranties in the industry. That kind of coverage means real confidence in the product and real peace of mind for you over the long haul.
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) Essential Series Specifications |
|
|---|---|
| Cell Configuration | 4S1P |
| Chemistry | LiFePO4 |
| Ah Capacity | 300Ah |
| Max Continuous Discharge Current | 200A |
| Max Charge Current | 200A |
| Max Discharge Peak Current | 400A (3 Seconds) |
| Series / Parallel Configuration | Max (4) in Series / Max (4) in Parallel – 4S4P |
| Voltage | 12.8V |
| Max Charge Voltage | 14.6V |
| Operating Voltage Range | 10.0V – 14.6V |
| 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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