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11 Year Warranty
BLUETOOTH CONNECTION
Bluetooth Enabled
iPhone/Android App
iPhone/Android App
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200%

POWER

500%

CHARGING

Ionic Lithium 12V 125Ah | Dual Purpose Starter Battery 1100 CCA + LiFePO4 Deep Cycle + Heater

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11-year warranty

Original price was: $1,249.00.Current price is: $849.00.

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  • Comparable to 900 cranking amps
  • This battery can be used as a starter battery for 250 hp Yamaha or Mercury motors
  • 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
  • Ionic batteries have proprietary software embedded in the BMS to make our batteries 100% compatible with Yamaha or Mercury motors
  • 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
  • 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
  • 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.

Magnuson-Moss Warranty Act: A vehicle manufacturer cannot legally void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)). Ionic Batteries have proprietary software embedded in the Battery Management Systems that make them 100% compatible with Yamaha or Mercury 250 hp motors. Learn More

Original price was: $1,249.00.Current price is: $849.00.

Out of stock

Want to be notified when this product is back in stock?

Ionic Lithium 12V 125Ah | Dual Purpose Starter Battery 1100 CCA + LiFePO4 Deep Cycle + Heater

Sale!

Original price was: $1,249.00.Current price is: $849.00.

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

Out of stock

Want to be notified when this product is back in stock?

  • Comparable to 900 cranking amps
  • This battery can be used as a starter battery for 250 hp Yamaha or Mercury motors
  • 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
  • Ionic batteries have proprietary software embedded in the BMS to make our batteries 100% compatible with Yamaha or Mercury motors
  • 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
  • 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
  • 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.

Magnuson-Moss Warranty Act: A vehicle manufacturer cannot legally void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)). Ionic Batteries have proprietary software embedded in the Battery Management Systems that make them 100% compatible with Yamaha or Mercury 250 hp motors. Learn More

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 12 Volt 125Ah Battery with Heater

ionic bass boatWorld Class Safety Features

Ionic Deep Cycle Lithium Battery 12V125-EPH has 12 volts and a 125Ah capacity and is perfect for powering your deep cycle systems. Can be used as a starting – dual Lithium battery comparable to 900A cranking amps for 250hp engines. 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 12V 125Ah batteries used as starters batteries have been engineered to work with overcharging issues that different outboard marine motors have.  “Ionic 12V 125Ah batteries used as starters batteries will work with outboard motors including Mercury and Yamaha.”

Built for Long Lasting Reliable Power

travel trailer winter batteryThe 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 Lithium Deep Cycle line has the best weight to power ratio on the market

battery for travel trailer in winterAt 12.55” (L) x 6.5″ (W) x 9.22″ (H) and weighing only 34.2 lbs., the Ionic Lithium Deep Cycle 12V125-EPH has the best size to power ratio of any deep cycle battery on the market. Connectors: 3/8 UNC Threads allow the battery to be installed in any direction unlike lead-acid batteries which are fixed. Ionic Lithium 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 80A and max discharge current is 100A / 500A(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.

Product Dimensions

Group 31 measurements

Widest spots. The battery does taper on the very base bottom.
Length : 12.52 in. => 12 1/2 in. => 318mm
Width: 6.496 in. => 6 1/2 in. => 165mm
Height (studs base): 8.465 in. => 8 15/32 in. => 215mm
Height (studs top): 9.2 in. => 9 13/64 in. => 233mm

Fits Group 31 battery trays

YouTube video
YouTube video
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
Model IC-12V125-EP4S
Voltage 12V
Capacity 125Ah, 1600Wh
Chemistry LiFePo
Weight 34.2 lbs (15.5 kg)
Dimensions 12.55″ (L) x 6.5″ (W) x 9.2″ (H)
319x165x234mm
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 50A
Max Discharge Current 100A
Crank Amps 900A
Pulse Discharge Current 500A (3S)
Operating Temperature -20~60℃
-4℉~140℉
BCI Group Size 31
Terminal 3/8-16 UNC Thread
Water Rating Water Resistant

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

Ionic Deep Cycle Manual

Spec Sheet

Bluetooth Guide

Safety Data Sheet

Customer Reviews

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

Customer Reviews
4.9 Based on 58 Reviews
5 ★
97% 
56
4 ★
2% 
1
3 ★
0% 
0
2 ★
0% 
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1 ★
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Filter Reviews:
BR
02/16/2024
Brandon R.
US US
I recommend this product

Ionic 125

Great experience and last forever.

TW
01/31/2024
Tom W.
US US
I recommend this product

Just purchased

Haven't had it on the water yet but the install was simple and the bluetooth was easy to set up. Battery charged quickly as advertised.

J
01/23/2024
James
US US
I recommend this product

App saved a trip

The first trip with the Ionics. Opened the app to check it out and to see what the accessory wattage draw was (two 125s in parallel). App told me the alternator was not charging. humm...Checked connections and did not even need a voltmeter to determine it was the alternator. Would have been possibly stranded if it were not for the app. Fished 5 full days on charged batteries just keeping tabs on the voltage. No problems cranking or powering accessories, live scope and SI. Fished as normal. App saved the guesswork and trip.

KA
01/18/2024
Kris A.
US US
I recommend this product

Best batteries out there

I purchased 2 12v 50ah over a year ago and definitely made me a believer in Ionic lithium batteries. I can get over 20 hours of fishing time in a weekend and still have power left.

LW
12/14/2023
Lindsey W.
US US
I recommend this product

Well pleased!

So far so good! Have used it 3 different days so far. Used as cranking battery and to power (2) Helix 10s and a Garmin 1222 with Livescope. About 9 hrs each day and the percentage left was 70-73 each day. Very little of time was running. Most all was trolling and fishing. Very pleased so far!


Ionic Lithium 12V 125Ah | Dual Purpose Starter Battery 1100 CCA + LiFePO4 Deep Cycle + Heater 4.9 stars 58 reviews.

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