Epoch Batteries 12V 314Ah Eco Series LiFePO4 Lithium Battery
Save 0%
Save %
Original price
$849.00
-Original price
$849.00
Original price
$849.00
$849.00-$849.00
Current price
$849.00
| /
✓ Authorized Epoch Batteries Dealer ✓ Lowest Price Match Guarantee ✓ FAST & FREE Shipping: In Stock Ready To Ship ✓ Questions? Talk to a Epoch Batteries Expert: 1-303-876-7654
Login for Exclusive Member Pricing.
Not a member? Create a Free Account.
Epoch 12V 314Ah Eco Series LiFePO4 Battery (4.02kWh, Group 31)
314Ah in a Group 31 case — more capacity than Epoch's 300Ah Essential Series, at a considerably lower price, with a higher cycle rating. The trade is Bluetooth and internal heating, which the Eco Series doesn't have, and a 6-year warranty rather than 11.
4,020Wh with 250A of continuous discharge and 750A for five seconds, in a 57 lb case that fits the compartment your lead-acid battery came out of. For an RV, van, cabin or off-grid shed in a temperate climate, this is the most capacity per dollar in Epoch's range. Renewable Outdoors is an authorized Epoch dealer — call us at (303) 876-7654 and we'll help you decide between Eco and Essential.
6-Year Warranty
Lowest Price Guarantee
Authorized Epoch Dealer
Free Shipping
0% APR Financing
Expert Support: (303) 876-7654
Why the Eco Series 314Ah
314Ah — 4.02kWh
More capacity than Epoch's 300Ah Essential, in the same Group 31 footprint at a lower price.
250A Continuous, 750A Peak
Enough for a 2,000W inverter with real surge headroom for motor and compressor startup.
4,500+ Cycles
Higher than the Essential Series rating — the Eco range economises on features, not cells.
57 lbs for 4kWh
A lead-acid bank giving the same usable energy would weigh well over 200 lbs.
Sixteen in Parallel
Scales to a very large 12V bank, or up to four in series for 48V.
Full BMS Protection
Overcharge, over-discharge, over-current, short circuit and temperature protection.
What's Included
What You Get
1 × Epoch 12V 314Ah Eco Series LiFePO4 battery
Documentation and warranty paperwork
The Eco Series has no internal heating and no Bluetooth. Charging requires 32°F or above; discharge is fine to −4°F. A lithium-profile charger and cables are separate — Epoch's 12V 50A charger suits this capacity. Note the case is 15.5 inches across the handles and up to 10.5 inches tall with terminals, so measure your compartment against those figures.
Epoch 12V 314Ah Eco Series Specifications
Cell Chemistry
LiFePO4 (lithium iron phosphate)
Rated Capacity
314Ah — 4.02kWh
Nominal Voltage
12.8V
Maximum Charge Voltage
14.6V
Operating Voltage Range
10.0–14.6V
Maximum Continuous Discharge
250A
Maximum Continuous Charge
250A
Peak Discharge
750A for 5 seconds
Series Configuration
Up to 4 in series (48V)
Parallel Configuration
Up to 16 in parallel
Cycle Life
4,500+ cycles
Charging Temperature
32°F to 131°F (0°C to 55°C) — no internal heating
Discharging Temperature
−4°F to 140°F (−20°C to 60°C)
Storage Temperature
32°F to 95°F (0°C to 35°C)
Internal Heating
No
Ingress Protection
IP54 — dust-protected, splash-resistant
Bluetooth
Not included on the Eco Series
BMS Protection
Overcharge, over-discharge, over-current, short circuit, high and low temperature protection
Case Size
Group 31
Dimensions
13.75" L (15.5" with handles) × 7.63" W × 10.0–10.5" H
Weight
57 lbs (approx. 25.85 kg)
Certifications
UL1642 cells; IEC 62619:2022; CE; RoHS
SKU
12314-ECO
Warranty
6-year warranty
6-Year Warranty
Epoch backs the Eco Series with a 6-year warranty and a 4,500+ cycle rating.
Lowest Price Guarantee
Found it cheaper elsewhere? Call us at (303) 876-7654 before you buy.
Authorized Epoch Dealer
Genuine Epoch hardware with full manufacturer support behind it.
Epoch 12V 314Ah Eco Series LiFePO4 Battery (4.02kWh, Group 31): Frequently Asked Questions
Why is this cheaper than the 300Ah Essential Series when it holds more?
Because you're not paying for Bluetooth, internal heating or the 11-year warranty. The cells and the BMS protections are comparable, and the Eco Series is actually rated for more cycles. If those three features don't matter for where the battery lives, this is straightforwardly better value.
How does the Eco Series differ from Essential, Pro and Elite?
Eco is the entry point. It has no Bluetooth, no internal heating, and a 6-year warranty rather than 11 — but the cells are the same LFP chemistry, the BMS protections are there, and the cycle rating is actually higher than the Essential Series at 4,500+. It's the right buy when the battery lives somewhere warm and dry and you don't need app monitoring. If you need to charge below freezing, or want to see state of charge on your phone, step up to Essential.
What will 4kWh run?
A 12V compressor fridge, lighting, water pump, fans, laptops and charging for a day and a half to two days with no input. Through a 2,000W inverter, roughly 3.2kWh of AC after losses — coffee maker, microwave in bursts, TV, tools. Call us at (303) 876-7654 with your loads and we'll be specific.
Can I charge it below freezing?
No. Charging needs 32°F or above, because there's no heater. Discharge is fine down to −4°F. If the battery lives in an unheated space through a real winter and you need to charge it there, buy a heated model — an unheated lithium battery will simply refuse the charge rather than accept a damaging one.
Will it fit a Group 31 tray?
The base footprint is Group 31, but it's 15.5 inches across the handles and up to 10.5 inches tall with the terminal bolts. Those are the figures to measure against, not the base dimensions — it's the most common fit surprise with batteries this size.
Is 250A of discharge enough for a 3,000W inverter?
A 3,000W inverter draws roughly 250A at 12V at full output, so it's right at the limit with no headroom. For a 3,000W inverter you'd want two of these in parallel, or a 24V/48V architecture. For a 2,000W inverter, a single battery is comfortable.
How many can I put in parallel?
Up to sixteen, though in practice a 12V bank beyond three or four batteries starts to make less sense than moving to 24V or 48V, because the cable sizes get unwieldy. Happy to talk through the architecture with you.
Why lithium iron phosphate rather than lead-acid?
You can use nearly all of the rated capacity rather than half, so an LFP battery does the work of a lead-acid one twice its size. It weighs roughly a third as much for the same usable energy. And it lasts thousands of cycles instead of a few hundred, so cost per useful cycle is far lower despite the higher purchase price.
What charger should I use?
One with a LiFePO4 profile. For a battery this size Epoch's 12V 50A charger is the sensible match — a 15A charger would take over twenty hours from empty. If you're charging from solar or an alternator, the charge controller or DC-DC charger needs a lithium profile too.
Is there any way to monitor it?
Not over Bluetooth on the Eco Series. You'd use a shunt-based battery monitor, or read state of charge from your inverter or charge controller. If phone monitoring matters, the Essential Series 300Ah adds it.
Do you offer financing or price matching?
Yes. We offer 0% APR financing options through Affirm at checkout, and our Lowest Price Guarantee applies — if you find this cheaper at another authorized dealer, call us at (303) 876-7654 before you order and we'll take care of it.
