Your Trusted Source For Lithium Battery Products

12 Volt 125Ah Lithium Deep Cycle Battery

(10 customer reviews)
  • 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
  • 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
  • Comparable to 900 cranking amps
Now shipping internationally to most countries

$1,079.00$1,149.00

Clear

Warranty: 5 Years

Ionic Lithium Deep Cycle 12 Volt 125Ah Battery

World Class Safety Features

Ionic Deep Cycle Lithium Battery 12V125-EP 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

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

At 12.55” (L) x 6.5″ (W) x 9.22″ (H) and weighing only 34.2 lbs., the Ionic Lithium Deep Cycle 12V125-EP 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 / 350A(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 and Group 27 battery trays

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-12V125-EP4S
Voltage 12V
Capacity 125Ah, 1600Wh
Chemistry LiFePo4
Weight 34.2 lbs (15.5 kg)
Dimensions 12.55″ x 6.5″ x 9.22″
165 x 319 x 234 mm
Life Cycles 3,000 @ 80% DOD
BMS Yes (Internal)
Max Charge Voltage 14.6±0.1V
Discharge Cut-Off Voltage ~10.0V
Max Charge Current 80A
Max Discharge Current 100A
Crank Amps 900A
Peak Current (3S) 350A
Operating Temperature -20~60℃
-4℉~140℉
BCI Group Size 31
Terminal 3/8-16 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

Safety Data Sheet

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.

Share your thoughts!

5 out of 5 stars

10 reviews

Let us know what you think...

What others are saying

  1. Paul (verified owner)

    Using for a house battery for RV and it has worked perfectly!

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  2. Don Laturell

    This is the second 12V125EP purchased for my RV. While going down the road I charge the batteries from Victron Energy Orion-Tr 12 I 12-9 isolated DC/DC converter. I have both batteries wired in parallel. Before I connected both batteries, I partially discharged one of the 12V125-EP batteries to see how well the two batteries would balance. For the first few minutes, the fully charged 12V125-EP discharged at a rate of 25 Amps into the partially discharged battery. After about 5 minutes both batteries were balanced. Then I fully charged both batteries using a Progressive Dynamics 9245C charger / converter with a PD92201 remote charge pendant. The remote charge pendant manually controls the boost mode placing the charger at 14.6V, ideal for fully charging the 12V125-EP batteries while connected to power at a camp ground. The blue tooth app is used to monitor state of charge. Once the batteries are fully charged, my RV has a switch to disconnect the batteries from the charger / converter. These lithium batteries, unlike lead acid, have a very low self discharge rate. I have done a short term test not charging the two batteries for 2 weeks. This is to test how well balanced both are. After 2 weeks, both batteries are at 99% charge.
    Amazing!

    With 80% DOD, this is like having 400 AH house batteries compared to the old lead acid.

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  3. Danny Clark

    Awesome product light weight and plenty of power. I also like being able to check the condition of the batteries on my phone

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  4. James Pilarski (verified owner)

    Cranking battery is excellent, I’m running dual power poles, Helix 12 & 10 plus all other accessories. Engine cranks over quickly

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  5. Rocco Altobello (verified owner)

    I am impressed by the fast charging of the battery and the weight. Purchased two 50 ah batteries for my trolling motor and one 30ah battery for my sonars great batteries would recommend them to who ever owns a boat. Batteries of the future.

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  6. William Glawson (verified owner)

    Awesome batteries and I always know how much power I have left with the App.

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  7. Tim Gamble (verified owner)

    Very pleased. Quick delivery as well

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  8. RV House Battery

    Don Laturell

    State for charge after 2 weeks (2 batteries in parallel)

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  9. Question

    John Maio

    Looking for a dual purpose cranking and deep cycle marine battery for my bass boat. I saw you 100ah HP. but it doesn’t have cold cranking amps listed and I can’t find any information about warranty

    Any help would be appreciated

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

    • MK

      Both the 12V 100Ah and 125Ah batteries work as dual batteries. The 12V125Ah is recommended to run graphs and start engines up to 250hp. The CCA rating is 900A. All of our batteries have a 5 year warranty with them.

      (0) (0)

      Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  10. Brandon (verified owner)

    I purchased two of the Ionic 125AH blue tooth Li-ion battery’s a little under a year ago . I purchased them to create a large power station in my 86 VW Vanagon to power a mocha machine , pellet smokers, LED lighting for the purest of glamping comforts my mind can think of. Now I’m ordering two more 125AH batteries to create the same setup in my WW2 1946 Karr trailer . Setting up a system like this is very complex which is why the customer service and engineers helped me figure out the best solution for my application/power needs. The blue tooth app. Is very useful and easy to use as well. Thank you Jeff In customer service for helping me with all my questions and guiding me in the SAFE/right direction .

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  11. Rickey Umberger (verified owner)

    Love this battery it’s lighter than most . Bluetooth is awesome on it

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  12. Question

    Bullet Bob

    Can you use a regular 12 volt battery charger to charge the lithium?

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

    • MK

      Yes, most regular lead acid charges will charge our ionic lithium batteries if the charger is under 15V.

      (0) (0)

      Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  13. Bon Gotuaco (verified owner)

    Love this Battery! I run an HDS16 , 12 Live and a Garmin with Livescope. No voltage issues whatsoever. Would recommend this battery to anyone. Also love the 3 50ah TM batteries. Can easily run all day with all of them and fires up my Verado without any concerns.

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  14. Jerry

    Starting a new year with my IONIC 125AMP cranking battery. It has been bullet proof, never letting me down. I run 2 Lowrance Live 12s, livewell full power all day and have never even had a glimpse of a problem. Just the best to be had. Cranking a Yamaha 250 HP SHO 4 stroke. Plus my IONIC trolling batteries are the absolute best.

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

  15. Rick Plummer (verified owner)

    I bought three of the Ionic 125 ah batteries for my bass boat, three battery trays and the 4-bank charger. I’ve got to say I’m very impressed from the quick shipping, expert packaging, and all around support for the products. The blue tooth app is a great tool for keeping track of your batteries. The weight I saved in my boat is just plain crazy. Haven’t got a single negative thing to say about Ionic products. Can’t recommend them strongly enough.

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...

×

Login

Continue as a Guest

Find The Perfect Battery For Your Needs

Check out our common questions and answers here, or

Ask Our Experts Now

Need some help determining exactly which batteries you need for your bass boat, RV, scooter, or other application? Let our lithium battery experts help you find the right battery.

lithiumhub

LET US HELP YOU

FIND THE RIGHT DEEP CYCLE BATTERY

Send us a quick question about your battery needs and our experts will get back to you ASAP.

LithiumHub carries a wide variety of lithium deep cycle batteries for every use case.

We're here to help you find just the right battery.

{"cart_token":"","hash":"","cart_data":""}