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12 Volt 125Ah Lithium Deep Cycle Battery

(3 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

$1,029.00$1,079.00

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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
ModelIC-12V125-EP4S
Voltage12V
Capacity125Ah, 1600Wh
ChemistryLiFePo4
Weight34.2 lbs (15.5 kg)
Dimensions12.55″ x 6.5″ x 9.22″
165 x 319 x 234 mm
Life Cycles3,000 @ 80% DOD
BMSYes (Internal)
Max Charge Voltage14.6±0.1V
Discharge Cut-Off Voltage~10.0V
Max Charge Current80A
Max Discharge Current100A
Crank Amps900A
Peak Current (3S)350A
Operating Temperature-20~60℃
-4℉~140℉
BCI Group Size31
Terminal3/8-16 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.

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5 out of 5 stars

3 reviews

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What others are saying

  1. Paul (verified owner)

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

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  2. 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 .

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  3. 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.

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  4. 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.

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  5. Question

    Bullet Bob

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

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    • MK

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

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  6. Rickey Umberger (verified owner)

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

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