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3-year warranty
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Ionic Lithium 12V 20Ah | LiFePO4 Deep Cycle Battery + Bluetooth

Fast Free Shipping on $150+ in The US
3-year warranty
CODE: JULY4TH FOR ADDITIONAL 10% OFF
CODE: JULY4THDEALER FOR ADDITIONAL 5% OFF
  • 70% lighter than lead acid batteries
  • Two to four times the service life (3000-5000 cycles)
  • Great for marine, RV, floor sweepers, lift gates, UPS systems, solar energy storage
  • Battery Management Systems (BMS) with power terminal cut-off and recovery
  • Built in cold weather protection – Does not take a charge if temperatures are below -4C or 24F in our case. Some variations with part tolerances.
  • 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. Learn more
  • Can go up to 4 in series with this battery
  • Comes with an 3 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.

$199.00

Availability: 65 in stock

Warranty: 3 Years

Frequently Bought Together With:

12 volt 30ah lithium deep cycle battery

Ionic Lithium 12V 30Ah | LiFePO4 Deep Cycle Battery + Bluetooth

  • 70% lighter than lead acid batteries
  • Two to four times the service life (3000-5000 cycles)
  • Great for marine, RV, floor sweepers, lift gates, UPS systems, solar energy storage
  • Battery Management Systems (BMS) with power terminal cut-off and recovery
  • Built in cold weather protection - Does not take a charge if temperatures are below -4C or 24F in our case. Some variations with part tolerances.
  • 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. Learn more
  • Can go up to 4 in series with this battery
  • 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.
12v lifepo 4a charger

Ionic Lithium LiFePO4 12V 4A Charger

  • This smart charger provides a constant current and voltage but will automatically stop charging once you hit 14 volts. This helps maximize the life of your lithium battery.
  • 12V LiFePO 4A charger works with all of our batteries up to 30 Ah and works with lead-acid as well.
  • The charger will time out and stop charging after 72 hours of continuous use, for safety reasons (indicated by blinking red LEDs). To reactivate the charger, disconnect and reconnect the power cable.
  • Charges a 12V 20Ah battery in approximately 5 hours.
  • Charges a 12V 30Ah battery in approximately 7.5 hours.
  • Charges a 12V 9Ah battery in approximately 2 1/4 hours.
  • Charges a 12V 12Ah battery in approximately 3 hours.
  • You can wire this charger in parallel to provide additional charging current to large battery systems.
  • 30-day return policy & free shipping.
- +
  • 70% lighter than lead acid batteries
  • Two to four times the service life (3000-5000 cycles)
  • Great for marine, RV, floor sweepers, lift gates, UPS systems, solar energy storage
  • Battery Management Systems (BMS) with power terminal cut-off and recovery
  • Built in cold weather protection – Does not take a charge if temperatures are below -4C or 24F in our case. Some variations with part tolerances.
  • 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. Learn more
  • Can go up to 4 in series with this battery
  • Comes with an 3 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.
3 warranty icon
3-year warranty
BLUETOOTH CONNECTION
Bluetooth Enabled
iPhone/Android App
iPhone/Android App
Free Shipping
Free Shipping

50%

Lighter

0%

MAINTENANCE

200%

POWER

500%

CHARGING

Product Description

Ionic Deep Cycle 12V20-EP

World Class Safety Features

Ionic Deep Cycle 12V20-EP Lithium Battery has 12 volts and a 20Ah 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. Ionic Deep Cycle Batteries can be hooked up 4 in series and as many needed in parallel.

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 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 line has the best weight to power ratio on the market

At 7.0” (L) x 3.0″ (W) x 6.5” (H) and weighing only 6.6 lbs., the Ionic Deep Cycle 12V20-EP has the best size to power ratio of any deep cycle battery on the market. Connectors: M6 screws 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 10A and max discharge current is 20A / 80A(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
 3 Year Limited Warranty

3 Year Limited Warranty

Looking for lithium marine batteries? Go here.

Ionic Deep Cycle Manual
Bluetooth Guide

ModelIC-12V20-EP
Voltage12V
Capacity20Ah
Energy256Wh
HeatedNo
BluetoothYes
Water RatingWater Resistant
ChemistryLiFePO4
Weight6.6 lbs (2.99 kg)
Dimensions7" (L) × 3" (W) × 6.5" (H)
178x76x165 mm
Terminal TypeM6
Max Charge Current20A
Compatible WithKayak, Marine, RV, Solar
Nominal Voltage12.8V
Nominal Capacity20Ah (256Wh)
BMS / FeaturesYes (internal) with Bluetooth APP support
Max Modules in SeriesUp to 4 (24V/36V/48V system support)
Max Modules in ParallelAs many as needed
Max Charge Voltage14.6 ± 0.1V
Discharge Cut-Off Voltage8.0V
Max Discharge Current20A
Peak Discharge Current70A (3s)
Operating Temperature-4 to 140°F (-20 to 60°C)
Cycle Life3,000 @ 80% DOD
Self-Discharge1–3% per month

Frequently Asked Questions

Will this battery run my fish finder or forward-facing sonar (Garmin LiveScope, etc.)?

Yes — this is one of the most popular small batteries for powering fish finders and forward-facing sonar. Customers run setups like a Garmin LVS 34 LiveScope plus a Garmin chartplotter (under 2A total draw) all day without issue, and it’s a great way to power your electronics without draining your starting or trolling batteries.

How long will it run my electronics?

With 20Ah / 256Wh of capacity and 99% usable depth of discharge, runtime depends on your device’s draw. For a typical forward-facing sonar and screen pulling under 2 amps, customers report 10+ hours of runtime — enough to fish from daylight to dark, and some report a multi-day trip on a single charge. The Ionic Bluetooth app shows real-time remaining runtime based on your actual draw.

Will it fit in my rod box or other tight space?

Yes — at just 7.0″ × 3.0″ × 6.5″ and 6.6 lbs, this is one of the most compact deep-cycle batteries available. Customers note it fits perfectly in a spare rod box alongside a sonar black box. The M6 terminals also let you mount it in any orientation.

What charger do I need, and how long does it take to charge?

You’ll want a LiFePO4-compatible 12V charger such as the Ionic 12V 4A charger, which fully charges this battery in about 5 hours. It’s also compatible with NOCO Gen Pro, Dual Pro PS/Auto, Minn Kota Precision, and other smart lithium chargers. You can use solar chargers and most lead-acid chargers that reach 14.4 – 14.6V (without a “Desulfate” mode). Chargers below 13.6V will only charge to 50% or less.

Can I connect multiple batteries in series or parallel?

Yes. You can connect up to 4 in series (for 24V, 36V, or 48V systems) and as many as needed in parallel to extend run time. Many anglers pair this small battery for electronics with larger Ionic batteries running their trolling motor.

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