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11 Year Warranty
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Ionic Lithium 12V 300Ah | LiFePO4 Deep Cycle Battery + Bluetooth + Heater

Fast Free Shipping in the U.S.
11-year warranty

Original price was: $2,990.00.Current price is: $1,999.00.

Availability: 36 in stock

Warranty: 11 Years

Frequently Bought Together With:

Ionic Lithium LiFePO4 12V 10A Charger

These chargers are constant current, constant voltage (CCCV) “Smart” chargers for 12V LiFePO or lead-acid batteries. “Smart” chargers stop charging once it reaches 14.6V.

For safety reasons, the charger times out and stops charging after 72 hours of continuous use. This is indicated by blinking red LEDs. To activate the charger again, simply disconnect and reconnect the power cable.

  • 70% lighter than lead acid batteries
  • Two to four times the service life (3000-5000 cycles)
  • Great for RV and motorhome house battery, solar power storage
  • Battery Management Systems (BMS) with power terminal cut-off and recovery
  • Our heater battery warms up the battery to enable a charger once battery is warmed up
  • Cell balancing and low voltage/over voltage protection, short-circuit protection
  • Bluetooth technology to monitor battery status
  • Maximize your energy potential with 99% Depth of Discharge (DOD)
  • Drop in replacements (plug and play)
  • Run as many needed in parallel
  • Can go up to 4 in series with this battery
  • While not a starting battery, it can be used for starting engines up to 1100A CCA equivalent
  • Comes with an 11 Year Battery Warranty to give you peace of mind with your purchase.
  • Compatible with the following chargers: Ionic, Noco Gen Pro, Dual Pro PS/ Auto, Minnkota Precision, Pro Mariner/Pro Tournament Elite, Stealth, Troll Bridge DC, Power Pole.

Original price was: $2,990.00.Current price is: $1,999.00.

Availability: 36 in stock

Warranty: 11 Years

Frequently Bought Together With:

Ionic Lithium LiFePO4 12V 10A Charger

These chargers are constant current, constant voltage (CCCV) “Smart” chargers for 12V LiFePO or lead-acid batteries. “Smart” chargers stop charging once it reaches 14.6V.

For safety reasons, the charger times out and stops charging after 72 hours of continuous use. This is indicated by blinking red LEDs. To activate the charger again, simply disconnect and reconnect the power cable.

Ionic Lithium 12V 300Ah | LiFePO4 Deep Cycle Battery + Bluetooth + Heater

Sale!

Original price was: $2,990.00.Current price is: $1,999.00.

Fast Free Shipping in the U.S.
11-year warranty

Availability: 36 in stock

Warranty: 11 Years

Frequently Bought Together With:

Ionic Lithium LiFePO4 12V 10A Charger

These chargers are constant current, constant voltage (CCCV) “Smart” chargers for 12V LiFePO or lead-acid batteries. “Smart” chargers stop charging once it reaches 14.6V.

For safety reasons, the charger times out and stops charging after 72 hours of continuous use. This is indicated by blinking red LEDs. To activate the charger again, simply disconnect and reconnect the power cable.

  • 70% lighter than lead acid batteries
  • Two to four times the service life (3000-5000 cycles)
  • Great for RV and motorhome house battery, solar power storage
  • Battery Management Systems (BMS) with power terminal cut-off and recovery
  • Our heater battery warms up the battery to enable a charger once battery is warmed up
  • Cell balancing and low voltage/over voltage protection, short-circuit protection
  • Bluetooth technology to monitor battery status
  • Maximize your energy potential with 99% Depth of Discharge (DOD)
  • Drop in replacements (plug and play)
  • Run as many needed in parallel
  • Can go up to 4 in series with this battery
  • While not a starting battery, it can be used for starting engines up to 1100A CCA equivalent
  • Comes with an 11 Year Battery Warranty to give you peace of mind with your purchase.
  • Compatible with the following chargers: Ionic, Noco Gen Pro, Dual Pro PS/ Auto, Minnkota Precision, Pro Mariner/Pro Tournament Elite, Stealth, Troll Bridge DC, Power Pole.
11 warranty icon
11 Year Warranty
iPhone/Android App
iPhone/Android App
BLUETOOTH CONNECTION
Bluetooth Enabled
Free Shipping
Free Shipping

50%

Lighter

200%

POWER

0%

MAINTENANCE

500%

CHARGING

Product Description

Ionic Lithium Deep Cycle Battery 12V300-EP4S

The Best Value 12V 300Ah Lithium Battery on the Market

rv winter vacationThe Ionic 12V 300ah Lithium Deep Cycle Battery is the most competitively priced lithium deep cycle battery on the market and also comes with an 11 Year Battery Warranty to give you peace of mind with your purchase.

World Class Safety Features

Ionic Deep Cycle 12V300-EP has 12 volts and a 300Ah capacity and is perfect for powering your deep cycle systems. Ionic Deep Cycle has an internal microprocessor controlled battery management system (BMS) that monitors the key operational parameters during charging and discharging, such as voltages, currents and internal temperatures.

rv in snowy forestBuilt for Long Lasting Reliable Power

The Ionic Deep Cycle Battery has a cycle life of 3,000 cycles or about 10 calendar years. Our lithium-ion batteries have a usable capacity of 99% compared to 50-60% for a traditional lead acid battery].

LithiumHub Deep Cycle batteries function in the widest range of temperatures with a discharge temperature range (Functional) of –20°C to 60°C (–4°F to 140°F) and a charge temperature range of 0°C to 45°C (32°F to 113°F). Automatically detects if batteries are too cold to take a charge.

The Ionic Deep Cycle Lithium Battery line has the best weight to power ratio on the market

At 20.5” (L) x 10.6″ (W) x 8.7” (H) and weighing only 83.1 lbs., the Ionic Deep Cycle 12V300-EP has the best size to power ratio of any deep cycle battery on the market. This is stored power at it’s best. Connectors: 3/8th UNC Threads allow the battery to be installed in any direction unlike lead-acid batteries which are fixed. Ionic Deep Cycle Batteries self-discharge rate per month is between 1-3% compared to lead-acid batteries which are about 30%. Max charge voltage is 14.6V and the discharge cut-off voltage is 10.5V.

Max charge current is 300A and max discharge current is 200A / 350A(3s). Peak discharge current is 500A (3s). 2500W continuous, 6000W peak (3s). Can be charged with solar chargers. Can be charged with most traditional lead-acid chargers that do not have “Desulfate” mode, provided the current levels do not exceed lithium battery charge specification. Using a traditional lead-acid charger that reaches 14.4-14.6 volts will allow the battery to be fully charged. Chargers that do not exceed 13.6 volts will only charge the battery to 50% capacity or less.

Has Bluetooth connection

Has Bluetooth connection
Can be charged in series

Can be charged in series
Can be charged in parallel

Can be charged in parallel
Free Shipping

Free Shipping
Lithiumhub 30 Day Return Policy

30 Day Return Policy
11 Year Battery Warranty

11 Year Battery Warranty

Looking for lithium marine batteries? Go here.

Model IC-12V300-EP4S
Voltage 12V
Capacity 300Ah, 3840Wh
Chemistry LiFePo
Weight 83.1lbs (37.7kg)
Dimensions 20.5″ (L) x 10.6″ (W) x 8.7″ (H) 521x269x221mm
Life Cycles 3,000 @ 80% DOD
BMS Yes (Internal)
Max Charge Voltage 14.6±0.1V
Discharge Cut-Off Voltage ~8.0V
Max Charge Current 200A
Max Discharge Current 200A
Crank Amps 1100A
Peak Current (3S) (450A)(3S)
Operating Temperature -20~60℃
-4℉~140℉
BCI Group Size 31
Terminal 3/8 UNC Thread

Please read our frequently asked questions page for answers commons questions regarding lithium ion batteries.

Ionic Deep Cycle Manual

Spec Sheet

Bluetooth Guide

Performance Curve

Customer Reviews

Don't just take our word for it! See real feedback from our customers

Customer Reviews
4.5 Based on 11 Reviews
5 ★
82% 
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Filter Reviews:
JW
03/12/2024
Joe W.
US US
I recommend this product

Fix The App!!!!!

I love the batteries. This is the second Ionic 600amph battery that I have purchased and they are great!!! The Ionic app however, is just awful. Is there a particular reason that you don’t fix it so your customers can see multiple batteries at a glance??? Other companies offer this so, I can’t understand why Ionic hasn’t done this yet??? I am running the batteries in parallel and would like to see what they are doing simultaneously and, when I do refresh, they skip around on the screen. I have left a review on Ionic’s website and so have many other people. Some of them have been posted for several years yet, you have done nothing about this problem. Like I said, I love the batteries but FIX THE APP!!! Until such time as you do, I will continue with much less than favorable reviews and I will not recommend the battery. Joe Worsham

TS
03/05/2024
Todd S.
US US
I recommend this product

So far so good

Help and support with questions was very helpful. Haven’t used it a lot yet so far it’s all good.

JF
10/11/2023
Josh F.
US US
I recommend this product

Amazing batteries

So I’ve had these batteries little over a month now and all I can say is wow. We put (2) 300ah in our super c motor home and run everything while Boondocking. Even my wife’s Insta pot and heavy, yet to worry about not having enough power all night. Most the time when I look up how much time are left on the batteries through the Bluetooth it comes with we usually have over four days if we left everything on constantly. Great product so far. Will see how well they do with time and the Arizona heat.

JM
09/05/2023
Jim M.
US US
I recommend this product

One Powerful Battery

One clean, immaculate storage system. From the packaging through the fit, appearance and finish, these Iconic batteries are like nothing else I've ever seen or used. Once connected, the batts spun the Cummins turbo over like a toy. I could not believe all the power behind these lithium batteries. I can't imagine that I ever operated without these powerful Iconic batteries. Simply the best!

D
08/18/2023
dnacpil
United States United States
I recommend this product

Battery is very good so far but the Ionic Blue Battery app is unreliable

So far so good since we replaced our AGM battery 3-4 weeks ago. However, the Ionic Blue Battery app for Androids is not good at all. It's unreliable, unstable and it will not open using cellular data connection, but it opens fine when my Android phone is connected to our home Wi-Fi.


Ionic Lithium 12V 300Ah | LiFePO4 Deep Cycle Battery + Bluetooth + Heater 4.5 stars 11 reviews.

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