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Epoch Batteries 12V 314Ah (4.02kWh) Eco Series LiFePO4 Battery
SKU:12314-ECO
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$849.00
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$849.00
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Product Highlights
12V 314Ah Eco Series LiFePO4 (4.02kWh): A 12.8V nominal, 314Ah deep-cycle battery that stores 4.02kWh (4,019Wh, nominal) in a BCI Group 31 case, for RV solar, off-grid, marine house power and 12V battery banks. It is not a drop-in replacement for every lead-acid installation: check tray fit, terminal clearance, cable size, overcurrent protection and charger profile first.
Size and Weight: 13.75 × 7.63 × 10 in (349 × 194 × 254 mm), 15.5 in (394 mm) long at the rope handles and 10.5 in (267 mm) high with terminal bolts; 57 lb (25.85kg). Epoch sells a matching tray for the 12300A-H, 12334A-H and 12314-ECO.
250A Smart BMS: 250A maximum continuous discharge for properly designed 3,000W inverter-class systems (inverter DC input within 250A, about 3,200W), and 750A for up to 5 seconds for surge loads such as microwaves, induction cooktops and compressors. Deep-cycle only: not cranking-rated, so not for engine starting.
Charging: 250A maximum continuous charge current from all sources combined, up to 157A recommended, and 14.2V-14.4V bulk/absorption. Use a 12V LiFePO4 charge profile, such as the Epoch 12V 15A Lithium Battery Charger; a smaller charger simply takes longer.
Low-Temperature Charge Protection: No internal heating. The BMS blocks charging below 0°C (32°F) to protect the cells, and the battery can still discharge down to -20°C (-4°F). Charge only between 0°C and 55°C (32°F to 131°F).
Smart BMS (20+ Safety Features): Protects against overcharge, over-discharge, over-current, short circuit, and high and low temperature, with a high-temperature reconnect at 50°C (122°F). It does not replace a correctly sized fuse or DC-rated breaker near the positive terminal.
No Bluetooth: Monitor it with an external shunt-based battery monitor, such as the Victron SmartShunt 500A/50mV sold by Epoch; voltage alone is not a precise state-of-charge reading on LiFePO4.
IP54 Rated: Dust-protected and splash-resistant for everyday mobile, RV, marine and outdoor use. Not waterproof or submersible: do not submerge or pressure-wash it, or install it where standing water can collect.
Expandable: Up to 4 matched 12314-ECO batteries in series (24V, 36V or 48V system classes) and up to 16 in parallel (5,024Ah, 64.31kWh at 12V); the largest bank is 4S16P (64 batteries: 51.2V, 5,024Ah, 257.23kWh).
4,500+ Cycle Life & Low Maintenance: No watering, acid service or routine lead-acid maintenance; routine inspections and terminal checks (8-12 Nm) keep it safe.
6-Year Limited Warranty: 3 years of free replacement, then 40% off MSRP on a replacement battery through Year 6. Register within 90 days or keep your proof of purchase to confirm your coverage start date.
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Epoch Batteries 12V 314Ah (4.02kWh) Eco Series LiFePO4 Battery
Epoch Batteries 12V 314Ah (4.02kWh) Eco Series LiFePO4 Battery
High-capacity Eco Series LiFePO4 power
Epoch 12V 314Ah Eco Series LiFePO4 Battery (4.02kWh)
A value-focused 12V 314Ah lithium battery built for RV solar, off-grid power, and high-capacity 12V deep-cycle battery banks.
The Epoch 12V 314Ah LiFePO4 battery is an Eco Series high-capacity power solution for DIY solar builders, RV converters, off-grid cabin owners, and mobile power systems. With 4.02kWh of stored energy (nominal, at 12.8V), a 250A smart BMS, 750A peak discharge for up to 5 seconds, a BCI Group 31 footprint, an IP54 dust- and splash-resistant enclosure, and a 57 lb weight, this 12V 314Ah lithium battery delivers maximum energy storage per dollar in a simplified, reliable package. It has no Bluetooth or internal heating, which keeps the price down.
314Ah
Capacity
4.02kWh
Stored energy
250A
Continuous output
750A
Peak discharge
57 lb
Battery weight
IP54
Splash resistant
Built for high-value power systems
11-year limited warranty3 yrs free replacement
250A smart BMSHigh-current protection
Group 31 sizeHigh-capacity footprint
Low-temp protectionCharge cutoff safety
IP54 enclosureDust and splash resistant
LiFePO4 safetyStable lithium chemistry
Power Heavy Loads with a 250A Smart BMS
Built for 3000W inverter-class systems, RV appliances, solar storage, and off-grid power.
This high-capacity 12V deep cycle battery includes a robust 250A continuous BMS, allowing one battery to support demanding 12V loads when the inverter, cabling, fusing, and low-voltage settings are properly sized. At 12.8V × 250A, the battery can supply roughly 3,200W before inverter efficiency losses, making it a strong fit for many 3000W inverter systems.
The 750A peak discharge rating for 5 seconds helps handle short surge loads from equipment such as microwaves, induction cooktops, compressors, and other off-grid appliances. This model is a deep-cycle battery and should not be used for engine starting unless Epoch confirms compatibility.
Massive Scalability: Series and Parallel Expansion
Build a 12V off-grid battery bank or scale to 24V, 36V, or 48V systems.
The Epoch 12V 314Ah Eco Series supports up to four batteries in series for higher-voltage system designs and up to sixteen batteries in parallel for massive 12V capacity expansion. A full 16-battery parallel bank provides up to 5,024Ah and 64.31kWh of stored energy; the largest series-parallel bank, 4S16P (64 batteries), is 51.2V, 5,024Ah, and 257.23kWh.
For any large off-grid battery bank, use matched batteries of the same model, age, capacity, and state of charge. Balanced wiring, proper busbars, fusing, disconnects, inverter settings, and LiFePO4-compatible charging equipment are required.
Compatible applications
RV solar battery, off-grid battery bank, van power, backup, and marine house systems.
✓RV solar battery banks, camper conversions, travel trailers, and motorhome house-power systems.
✓Off-grid battery bank builds for cabins, tiny homes, sheds, and remote solar systems.
✓Van, overland, and mobile auxiliary power systems requiring high-capacity 12V energy storage.
✓Marine house battery systems for electronics, lighting, pumps, refrigeration, and accessories.
✓Backup power systems for communications, lighting, refrigeration, and critical 12V loads.
✓3000W inverter-class systems when inverter, cables, fusing, and low-voltage settings are sized correctly.
✓Lead-acid replacement projects where tray fit, terminal clearance, cable size, overcurrent protection, and charger profile check out; it is not a drop-in for every installation.
✓24V, 36V, and 48V battery banks using up to 4 batteries in series.
✓Large 12V parallel battery banks up to 16 batteries and 64.31kWh total energy.
Built to Last: 4,500+ Cycles and Essential Safety
Official Eco Series cycle-life rating, low-temperature protection, and advanced BMS safeguards.
The official Epoch product page and data sheet list this model at 4,500+ cycles. It is designed for maintenance-free LiFePO4 service with advanced BMS protection, low-temperature charge protection, over-current protection, short-circuit protection, and high/low temperature disconnects.
Smart Low-Temperature Protection
The Eco Series does not include active internal heating, but it does include a low-temperature charge disconnect. Below 0°C (32°F), the BMS blocks incoming charge current to help prevent permanent lithium cell damage, while still allowing discharge down to -20°C (-4°F). Charge only between 0°C and 55°C (32°F and 131°F).
IP54 Splash-Resistant Case and 11-Year Limited Warranty
The IP54 enclosure is dust protected and splash resistant (not waterproof or submersible), making it a practical choice for RV compartments, dry boat consoles, battery boxes, vans, cabins, and protected off-grid installations. The Eco Series is backed by an 11-year limited warranty (3 years of free replacement, then 40% off MSRP on a replacement battery through Year 11); register within 90 days or keep your proof of purchase.
Eco Series feature highlights
Capacity, current output, and simple dependable power.
314Ah high-capacity storageStores 4.02kWh of energy in one practical Group 31 lithium battery.
250A continuous dischargeSupports heavy 12V loads, large DC circuits, and properly sized inverter systems.
750A peak dischargeDelivers short-duration peak current for up to 5 seconds to help handle surge loads.
250A max continuous chargeAccepts up to 250A from all charging sources combined (up to 157A recommended) from properly configured lithium-compatible equipment.
Low-temperature charge disconnectBMS blocks charging below 0°C (32°F) to protect the cells; there is no internal heater.
IP54 splash-resistant caseDust-protected and splash-resistant for protected RV, marine, mobile, and off-grid locations. Not waterproof or submersible.
4,500+ cycle lifeOfficial Epoch product and data-sheet rating for long-life LiFePO4 service.
11-year limited warranty3 years of free replacement, then 40% off MSRP on a replacement battery through Year 11.
No Bluetooth or heaterSimplified Eco Series design prioritizes capacity, current output, and value.
Series and parallel expansionSupports up to 4 in series and up to 16 in parallel when installed as matched batteries.
57 lb weightA high-capacity lithium battery at a fraction of the weight of many comparable lead-acid banks.
Maintenance-free LiFePO4No watering, acid maintenance, or routine lead-acid service required.
Compatible chargers and accessories
Recommended add-ons for a complete installation.
✓Battery tray for Epoch 12300A-H, 12334A-H and 12314-ECO models.✓Victron SmartShunt 500A/50mV Bluetooth battery monitor for external app-based monitoring.✓Epoch 12V 15A Lithium Battery Charger, or a larger LiFePO4-compatible charger programmed to the correct settings (up to 157A recommended, 250A maximum).✓Power distribution blocks, busbars, fuses, disconnects, and properly sized cables.
IP54 splash and dust protection
Dust protected. Splash resistant. Built for protected mobile and off-grid installations.
The IP54 enclosure is suitable for many protected RV, marine, cabin, and outdoor equipment locations. It should not be submerged, pressure washed, or installed in an exposed location where standing water can collect around the battery.
Charging and bank design note
Program your equipment for LiFePO4 and protect every string.
Use LiFePO4-compatible chargers, inverter/chargers, DC-to-DC chargers, and solar controllers set to 14.2V–14.4V bulk/absorption, with up to 157A recommended and no more than 250A from all sources combined, and charge only between 0°C and 55°C (32°F and 131°F). Disable equalization and temperature compensation, install a DC-rated fuse or circuit breaker as close as practical to the positive terminal, torque the M8 terminals to 8–12 Nm (71–106 in-lb), mount the battery upright unless Epoch documentation allows otherwise, and verify cable ampacity, voltage drop, tray clearance (15.5 in at the handles, 10.5 in with terminal bolts), and environmental limits before final installation. The 12314-ECO is not a drop-in replacement for every lead-acid installation.
Specifications:
Epoch Batteries 12V 314Ah (4.02kWh) Eco Series LiFePO4 Battery
The Eco Series is designed to deliver maximum capacity and power at the most competitive price point. It does not include Bluetooth monitoring or internal heating pads, and it uses an IP54 weather-resistant enclosure. It carries a 6-year limited warranty: 3 years of free replacement, then 40% off MSRP on a replacement battery through Year 6. Essential and Pro models add premium features such as Bluetooth, active heating or higher IP ratings, depending on the model. If you want raw, reliable power and massive capacity on a budget, the Eco Series is the value-focused choice.
The 250A continuous BMS allows the battery to continuously output roughly 3,200 watts at 12.8V before inverter efficiency losses. That makes it a strong match for many 3000W inverter systems when the cables, fusing, inverter settings, and installation are sized correctly. The 750A rating covers surges of up to 5 seconds only, such as a microwave, induction cooktop, or compressor starting. Size the system by the inverter's DC input current, which must stay within 250A; usable AC output is lower because of conversion losses.
Yes. The Epoch 12V 314Ah Eco Series supports up to 4 batteries in series for 24V, 36V, or 48V systems, and up to 16 batteries in parallel for expanded 12V capacity; the largest bank is 4S16P (64 batteries: 51.2V, 5,024Ah, 257.23kWh). Use batteries of the same model, age, capacity, and state of charge, fully charge each one before connecting it, and use matched cabling, proper fusing, and charging equipment rated for the full bank voltage.
Yes. The Eco Series does not include active internal heating pads, but it does include low-temperature charge protection. Below 0°C (32°F), the BMS blocks incoming charge current to help protect the LiFePO4 cells, and the battery can still discharge down to -20°C / -4°F. Charge only between 0°C and 55°C (32°F and 131°F): move a cold battery somewhere warmer and let it stabilize before charging, and never bypass the protection.
The 12V 314Ah Eco Series has an IP54-rated weather-resistant enclosure. It is protected against dust and water splashes from any direction, making it suitable for RV compartments, battery boxes, off-grid cabins, and protected marine spaces. It is not waterproof or submersible: do not submerge or pressure-wash it, or install it where standing water can collect around the battery.
The Epoch 12V 314Ah battery weighs 57 lb. Comparable lead-acid or AGM banks with similar practical usable energy can weigh far more and take up significantly more space, especially because lead-acid batteries are commonly limited to about 50% usable depth of discharge. The exact weight savings depends on the lead-acid bank being replaced.
No. This Eco Series model is built for simplified, high-capacity value. It does not include Bluetooth monitoring or internal self-heating. Use an external shunt-based battery monitor, such as the Victron SmartShunt 500A/50mV sold by Epoch, if your system needs app-based visibility; voltage alone is not a precise state-of-charge reading on LiFePO4.
Use a LiFePO4-compatible charger, such as the Epoch 12V 15A Lithium Battery Charger, or a converter, inverter charger, solar charge controller, or DC-to-DC charger programmed for LiFePO4. Recommended settings include 14.2V–14.4V bulk/absorption, ending when the current falls to C/20 (about 15.7A) or after 15 minutes, float disabled preferred or 13.3V–13.6V, 13.2V re-bulk, equalization disabled, and temperature compensation disabled. Charge at up to 157A (recommended) and never more than 250A from all sources combined; a smaller charger is suitable, it simply takes longer.
Product Documents:
Epoch Batteries 12V 314Ah (4.02kWh) Eco Series LiFePO4 Battery User Manual
Very heavy for a 4D - suggests a lot of plates - more plates the better. Batteries were packaged in an original Renogy box which had foam damage protection. Batteries arrived promptly and are working well.
I have bought 10 sets of these. I used 2 sets to support 2-590watt bifacial and 1 460 watt panel. These are setup vertically. I have them running in serial for a total of of 4 sets. Two of them run to my Anker Solix F3800 plus which allow me to get almost the max of 3200watts. I have 2 F3800 plus with a total of 10 bp3800 batteries for a total of 46,080 wh of storage. I mounted them on 15' aluminum rails. I connected the rails to boards and mounted them with 5" caster wheels which allow me to easily move them to the direction of the sun. This allows me on most days to outproduce my 27 360watt solar panels on my roof. The other 2 sets I each have two 460 watts panels. 1 set I have running to 2 chest freezers and a fridge in the basement. I have 4,000 wh of battery storage. The other set mostly runs my PC gaming area. I have 6,000 wh battery storage.
I have a total of 3.5mwh of battery storage with my electric company.
