Black Oak Lithium 12V 108Ah Dual Purpose LiFePO4 Marine Battery - Black Oak LED
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Black Oak Lithium 12V 108Ah Dual Purpose LiFePO4 Marine Battery

Black Oak Lithium 12V 108Ah Dual Purpose LiFePO4 Marine Battery loupe
Black Oak Lithium 12V 108Ah Dual Purpose LiFePO4 Marine Battery
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List Price: $1,528.24
Price: $1,222.59 & Free Shipping
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Introducing Black Oak Lithium's 12V 108 Ah Dual Purpose Lithium Iron Phosphate Battery – the absolute best choice for a dependable lithium workhorse that delivers top notch performance season after season.

Our 12V 108Ah Lithium battery boasts an impressive 1260 cold cranking amps, providing an unparalleled kickstart for your outboard motors.

With an impressive 5,000 charge cycles and an industry best 11 year warranty, Black Oak's patented lithium iron phosphate (LiFePO₄) chemistry ensures your vessel roars to life every time for years to come.

The most reliable marine lithium batteries.

2X the power of AGM

Twice the power of lead-acid and AGM batteries at half the weight.

1/2 The weight of AGM

Up to 60% lighter than the lead-acid or AGM equivalent.

Marine Rated

Our batteries can withstand heavy spray and handle immersion up to 3 feet for over 60 hours.

Lasts 10X as long

Black Oak lithium batteries last 10 times longer life than lead-acid batteries.

Black Oak Lithium battery connected to the app via Bluetooth

Bluetooth Enabled

Seamlessly connect your phone to any Black Oak Lithium Battery to monitor all battery vitals in our app.

More Usable Capacity

Black Oak Lithium batteries allow you to use 100% of their capacity, regardless of the discharge rate.

Built-In Battery Management System (BMS)

Our intelligent BMS not only maintains peak performance but also acts as a guardian, preventing overheating, overcharging, and extending the cell cycle life.

Plug and Play Convenience

Upgrade without the hassle. The 12V 108Ah is a seamless replacement for lead-acid, gel, or AGM batteries. No complicated installations or modifications needed.


-  Black Oak 12V 108Ah Marine Lithium LiFePO4 Battery

-  Solid Brass Hardware

-  Instruction Manuel


- Dual purpose, 1260 cold cranking amps

- Over 5000 Cycles at 80% depth of discharge

- Seamless Bluetooth connectivity

- Series and/or Parallel operation

- Automatic cell balancing system

- IP67 Water and Dust resistant Group 31 case

- Temperature monitoring

- Exceptional voltage stability

- Robust mechanical design

- Maintenance free, Plug & Play replacement

- No hydrogen generation or gas

- Less than half the weight of similarly sized SLA batteries

- Top of class in safety and reliability 

- Stock available for quick delivery in US or worldwide

- Lifetime warranty and support


Black Oak Lithium Limited Warranty 

Black Oak Lithium sets the industry standard with an unmatched 11-year limited warranty against manufacturing defects across all lithium batteries. We offer comprehensive Free replacements for the initial 5 years, after this period, replacements are prorated at a 35% discount off the retail price. Additionally, both Electric Fishing Reel Batteries and Marine Lithium Battery Chargers come with a 2-year complimentary replacement warranty.

What does this warranty cover?

At Black Oak, we take pride in our products. We offer a Limited Warranty ensuring that every lithium battery purchased from, or our authorized dealers and distributors, is free from defects at the time of purchase. This warranty specifically covers any defects in materials and workmanship under standard use throughout the Warranty Period. Should any issues arise due to improper workmanship during normal use and maintenance, Black Oak commits to repairing or replacing the product or its parts at no cost.

How does the warranty work?

If your battery is broken, we'll fix it or give you a new one. Fixable batteries are repaired for free. If the problem is determined to be a manufacturing defect and within 5 years, we replace it for free. After 5 years, we'll fix your battery for free if we can, if not, you can buy a new one for 35% off. It may take up to 1 week to repair your battery. Need a new battery right away? You'll need to pay first, but we'll refund you once we get the old one back and confirm it's defective.

Duration of warranty

We offer an industry leading 11-year warranty on lithium batteries from the date of purchase. Any replacement batteries issued carry the remaining warranty from the date of the original purchase.

What exclusions apply to this limited warranty?

This warranty exclusively covers manufacturing defects. Actions such as jump-starting, short-circuiting, intentional negligence, tampering with manufactures seal, using unauthorized chargers, shipping related damages, incorrect battery installation, breakage due to collisions, improper storage, water damage, temperature damage from extreme heat or cold, or abuse will invalidate the warranty without exceptions. If the battery is determined to be misused, the customer will be responsible for repair charges, which include parts and shipping. Black Oak Lithium retains the discretion to decline any warranty claims.

If you feel you have a warranty issue please start here

If you believe you have a warranty issue that is due to a defect in either material or workmanship please follow these steps.

Read the warranty details section above to determine if your product is in need of a warranty repair or not.

How did you purchase the Product?

I purchased directly from - please review the following information below.

I purchased from an authorized reseller of Black Oak LED - please review the following information and contact the reseller directly to return your product.

Request a Return Merchandise Authorization (RMA) number for a warranty claim by emailing us at

PLEASE NOTE an RMA number is required for all returned packages. Unfortunately, failure to follow this step will result in the package being returned to sender.

We will quickly follow up with a reply email containing directions to process your warranty claim.


Black Oak Lithium 12.8V 108Ah Dual Purpose LiFePo4 Marine Battery Technical Specifications

Nominal Voltage:

Operating at 12.8V, the Black Oak Lithium battery maintains a smooth and steady power output during discharge, eliminating the abrupt declines seen in similarly sized SLA batteries. Experience a seamless and uninterrupted power supply to the last drop.

Nominal Capacity @ 1C:

With a nominal capacity of 108Ah at 1C, this battery delivers consistent and enduring performance.

Charge Voltage:

Maintain optimal charging with a recommended voltage range of 14.45V to 14.60V.

Charge Current (Recommended):

Efficiently charge your battery with a recommended current of less than 50A, ensuring longevity and reliability.

Discharge Voltage Minimum:

Experience prolonged usability with a minimum discharge voltage of 10V.

Discharge Current Max (Constant):

Benefit from a maximum constant discharge current of 2000A, providing substantial power when you need it.

Pulse Current:

Handle peak power demands with a pulse current capability of 3000A.


Weighing just 32lb, the Black Oak Lithium battery is a lightweight powerhouse, ideal for various applications.

BCI Group Number:

Designed to fit Group 31 specifications, this battery aligns seamlessly with industry standards.

Terminals (TPI):

Featuring M8 x 1.25 terminals, the Black Oak Lithium battery ensures secure connections.

Dimensions L x W x H (w/Terminals):

Measuring at 13.25" x 6.7" x 8.5", this battery offers a compact yet powerful solution.

Operating Temperature:

Adapt to challenging conditions with an operating temperature range from -10°C to 45°C during charging and -20°C to 60°C during discharge.

Storage Temperature:

Store your battery with confidence, knowing it can withstand temperatures from -40°C to 50°C.

Optimal Humidity:

Operate in diverse environments with an optimal humidity range of 5% to 95%.

Water/Dust Resistance Rating (IP):

Equipped with an IP67 rating.


Certified for safety and performance with UL1642 and FFC Class B certifications.

Shipping Classification:

Conforming to UN 3480, Class 9 standards, the Black Oak Lithium battery is suitable for safe transportation.

Discover the Black Oak Lithium 12.8V 108Ah Battery – a powerhouse engineered for reliability, performance, and adaptability in any application.


Can I start my boat with this battery?

Absolutely! Our 12-volt, 108 amp-hour dual-purpose Marine Lithium battery is a powerhouse with a whopping 1260 cold cranking amps. It guarantees that your engines will roar to life reliably, and it's not just good for starting – it's got the legendary deep cycle capabilities that define all Black Oak Lithium batteries. So, whether you're kickstarting a boat, car, or truck engine, rest assured, it's got the juice to run all your electronic gadgets too.

Is it really twice as powerful?

You betcha! Here at Black Oak Lithium, we engineer our batteries using lithium iron phosphate technology, and it's a game-changer. Picture this – 60% less weight, a charging speed up to 5 times faster, and a significantly longer lifespan (we're talking 5-10 years longer on average). But here's the real kicker – the flat voltage curve. Unlike those lead acid batteries that start sagging as you use them, our Black Oak Lithium battery maintains a steady voltage for 99% of its charge. That means you're getting all that power down to the last drop and doubling the usable power compared to traditional batteries.

Are these lithium batteries safe?

Absolutely, positively safe and reliable! Our special sauce is Lithium Iron Phosphate (LiFePO4) – no rare earth elements, no heavy metals, and definitely no lead or acid. It's non-toxic, non-corrosive, doesn't off-gas, and requires zero watering or maintenance. Plus, it plays nice in any orientation. And here's the kicker – it won't explode or catch fire. Each Dakota Lithium battery is equipped with a battery management system (BMS) microchip, protecting it from overheating, overcharging, and short-circuiting. We even put it in a rugged, fireproof, and IP67 waterproof case for good measure.

How do I charge this battery up?

Our 12V Lithium battery prefers to be charged with our 12V Lithium Battery Charger


Got any deals for military or first responders?

Absolutely, we do! At Black Oak Lithium, we tip our hats to the brave men and women who safeguard our nation. Military personnel and first responders, present and past, enjoy a sweet 15% discount. And guess what? If there's already a sale happening, we'll toss in an extra percentage just for you. Reach out to us at 800-348-1287 or fill out the form below to snag these special prices.

What exactly does your warranty cover?

We are human, and thus make mistakes. If you believe your light was one of these rare occurrences due to workmanship or material failure, send it back and we will verify. Once confirmed, Black Oak LED will repair, or otherwise replace, your light free of charge.

How can I hop on board as a dealer?

For wholesale and bulk orders, give us a holler at 1-800-348-1287 or drop us an email at

What battery does my RV or camper van need?

Keep it simple – the industry standard house battery size for most RVs, campers, and VanLife setups is a 12V 100Ah Lithium Battery. It's a drop-in replacement for AGM and most lead acid batteries.


Do we have an app?

Yes, use the links below to download the latest version of our app and seamlessly monitor all the vitals of your Black Oak Lithium battery via bluetooth connection.

IOS App Download

Android App Download


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