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12 Volt 300Ah Lithium Deep Cycle Battery w/ Heater

  • 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
  • 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
  • Comes with a 5 year warranty to give you peace of mind with your purchase.
  • Can go up to 4 in series with this battery
  • Can be used for starting engines up to 1100A CCA equivalent
Now shipping internationally to most countries

$2,990.00 $2,299.00

Availability: In stock

Warranty: 5 Years

Ionic Lithium Deep Cycle Battery 12V300-EP4S

The best value 12V 300ah lithium deep cycle battery on the market

The Ionic 12V 300ah Lithium Deep Cycle Battery is the most competitively priced lithium deep cycle battery on the market and also comes with a 5 year 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.

Built 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 traditional lead-acid batteries]. 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. 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
5 Year Warranty

5 Year Warranty
Model IC-12V300-EP4S
Voltage 12.8 V
Capacity 300 Ah
Chemistry Primsmatic- LiFePO₄
Weight 83.1 lbs
Dimensions 20.5×10.6×8.7″
520.7×269.2×221 mm
Life Cycles 3,000 @ 80% DOD
BMS Yes (Internal)
Max Charge Voltage 14.6±0.1V
Discharge Cut-Off Voltage 8 V
Max Charge Current 200 A
Max Discharge Current 200 A
Crank Amps 1100A
Peak Current (3S) 350A
Operating Temperature -20~60℃
-4℉~140℉
BCI Group Size 8D
Terminal UNC 3/8

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

Ionic Deep Cycle Manual

Spec Sheet

Bluetooth Guide

Ionic Bluetooth Monitoring App

Monitor
Your Charge

Ionic Lithium Deep Cycles Batteries are the first ones on the market with built in bluetooth monitoring. Download the app to monitor your battery life at any time. Utilizing bluetooth technology and your smartphone, you'll always know exactly how your battery life is.

Find The Perfect Battery For Your Needs

Check out our common questions and answers here, or

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