Home Marine Starting Batteries 12V 20Ah Marine Starting

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surface of LiTime 12V 20Ah marine starting lithium battery

Dimension of LiTime 12V 20Ah Marine Starting Lithium Battery

features of LiTime 12V 20Ah marine starting battery

LiTime 12V 20Ah marine starting lifepo4 battery with 800 CCA, 810 MCA, and 900 HC

chart of litime 12v 20ah lithium cranking marine battery's cranking amps at different temp

top BMW-grade lifepo4 starting cells of litime 12V 20Ah cranking battery

battery management system protection information of litime 12v 20ah marine lithium cranking battery

Low-temp cut off protection feature of litime marine starting battery 12v 20ah

LiTime 12V 20Ah lithium 800cca cranking battery vs AGM battery

applications of litime 12v 20ah marine starting battery - outboard motor and lawn mower

precaution of using LiTime 12v 20ah starting battery

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Features

Starting

Marine starting power—strong, fast, and cold-ready.

Low-Temp

Low-Temp Charging Protection – Stops charging in cold environments to ensure safety and extend battery lifespan.

LiTime 12V 20Ah 800 CCA Marine Starting Lithium Battery

$209.99

$359.99

41% OFF

30-Day Price Guarantee & 7-Day Free Return Policy Included

800 CCA & 810 MCA – Crank up Your Marine Outboard with Ease

Top BMW-Grade Cells: Combines high performance and safety with 5000+ cranking cycles, delivering a luxury-grade and long-lasting marine experience.
45C Peak Discharge Rate: Delivers unmatched starting power, ensuring quick and reliable ignition in any condition.
Reliable in All Conditions: With 800CCA (-10℃), 810MCA, and 900HCA, it ensures powerful starts at any temperature.
Patented Metal Constraint Technology: Effectively prevents heat expansion, enhancing stability, durability, and extending battery life.
20+ Advanced Protections: Low-temp cut-off, overload protection with auto-recovery (30s), salt-spray resistance, moisture-proof.
IP67 Waterproof & Dustproof: Ideal for marine environments.
Compact & Lightweight: 50% smaller and 74% lighter than lead-acid batteries, with a BCI Group U1 size and a weight of just 9.68 lbs. （VS 755 CCA Lead-acid Battery)
Faster Charging: Supports 1.5C (30A) max. charging rate, just 40 mins to be fully charged.
Wide Application: Also for fuel-powered riding lawnmowers, all-terrain vehicles (ATVs), and utility-terrain vehicles(UTVs).
Single Use Only: No series or parallel connections allowed.
Certifications: UL1973 tested, FCC, CE, RoHS, UN38.3.
Safety Guarantee: LiTime batteries are installed to ABYC E-13 standards, fully compliant with lithium battery requirements.
Application Restrictions: DO NOT use as a starter battery in vehicles (cars, bikes, tractors, etc.). Not suitable for Yamaha outboards. For Yamaha compatibility, choose the LiTime 12V 140Ah dual purpose lithium marine battery.
NOT Dual-purpose: For a dual-purpose using, try LiTime 12V 140Ah dual purpose lithium marine battery.
Installation Note: Please do not position the battery with the bolts side downward. Other orientations are permissible.
Tip: Please check the CCA to confirm if this battery is suitable for your engine. If you're unsure, contact service@litime.com .

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$209.99

$359.99

41% OFF

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Free standard shipping on all orders.
Delivered in 2–5 business days.

12V 20Ah Marine Starting

$209.99

$359.99

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Features Specs FAQ Reviews Compare User Manual

Features

Upgrade Your Power: LiTime 12V 20Ah Marine Starting Battery

Discover the perfect replacement for your lead-acid battery with the LiTime 12V 20Ah Marine Starting Battery. Designed to deliver 800 CCA (under -10℃). Featuring top BMW-grade LiFePO4 starting cells, this battery supports a max. charging current of 80A from outboard alternator. Experience superior performance in a more compact and lighter package, making it the ideal choice for any boating enthusiast seeking reliability and efficiency.

features of LiTime 12V 20Ah Marine Starting Lithium Battery

BMW Grade LiFePO4 Starting Cells

BMW-grade starting cells are ideal for high-end automotive production, offering excellent internal resistance and consistent capacity, the cells provide the highest capacity, superior cycling performance, longer lifespan, and robust discharge capabilities, even under long-term high-power use.

LiTime 12V 20Ah marine starting battery featuring BMW-grade LiFePO4 cells and patented sheet metal constraint structure

⭐Patented Sheet Metal Constraint Structures

Helps to maintain reliable performance and prevent overheating, physical damage, and other safety risks.

⭐Fast Charging and High Power Discharge

Support max. charging current of 80A from outboard alternator and offer 800 CCA

⭐Low Impedance ≤40mΩ

The lower the impedance, the better rate of charge and discharge the cells can go through.

Self-Developed BMS for Cranking up Marine Passion

Distinct from basic BMS with only 5 protections (over-charge, over-discharge, over-current, over-temp, and short-circuit), the LiTime self-developed BMS includes these and offers over 20 protections, such as low-temp cut-off protection, auto-recovery after overload protection (30s), pre-charge function, and resistance to moisture and salt spray.

battery management system protection information of LiTime 12V 20Ah Marine Starting Lithium Battery

Safeguards Longivity and Performance under Low-Temp

The battery features an intelligent cut-off function that halts charging below 0°C (32°F) and discharging below -20°C (-4°F). This low-temperature protection safeguards the battery from damage in cold conditions, extending its lifespan and ensuring long-lasting performance.

low temperature charging off protection feature of LiTime 12V 20Ah Marine Starting Lithium Battery

Born for Marine Outboard with Outdoor-Rated Quality

Engineered for marine excellence, this battery delivers 800 CCA and 810 MCA. Designed with outdoor-rated quality, it features IP67 waterproof and dustproof protection, ensuring reliable performance in any conditions. Born for marine outboard use, it's your ideal companion on the water.

LiTime 12V 20Ah marine starting battery with 800 CCA, 810 MCA, and 900 HCA, IP67 rated for water and dust proof

All-Round Superior to Lead-Acid Battery

Experience unparalleled power with LiTime LiFePO4 marine starting battery, offering all-round superiority over traditional lead-acid batteries. Enjoy over 5000 cranking times and a remarkable 10-year lifespan. LiTime 12V 20Ah marine starting battery is a lightweight, compact, and long-lasting alternative to lead-acid batteries. At 74% lighter and 50% smaller, it offers easy installation and space-saving benefits, ensuring you get the most efficient and reliable energy solution.

LiTime 12V 20Ah marine starting battery, 74% lighter than lead-acid, 3.3X lifespan, and 50% smaller for easy replacement

Three Fast Charging Ways

With the LiTime 12V 20Ah starting battery, you can choose from three convenient charging options to suit your needs. Whether you use a LiFePO4 battery charger, generator, or outboard alternator, you can fully charge your battery efficiently and reliably. We recommend 0.5C(10A) charging current, about 2 hours to charge fully. And only 40 minutes to fully charge if charged with a maximum continuous charge current of 1.5C (30A).Compared with lead-acid battery charging (usually charging current is 0.1C), the max. The charging current of the LiFePO4 battery can shorten the charging time by 15 times, so it can be charged with more power in a shorter period, which can satisfy the demand of going out in a hurry.

recommended 3 charging ways to litime 12v 20ah 800 cca marine starting lithium battery

Back by Professional Testing and Certi & Committed to Provide Best Service

LiTime offers rigorous testing, a 5-year warranty, and fast shipping with local warehouse support for reliable service

Suitable for Fuel Powered Outboard and Riding Lawn Mower

applicable scenarios for litime 12v 20ah 800 cca marine starting lithium battery

Trusted Power for Every Journey

a LiTime 12V 20Ah marine starting battery by an outboard motor

a LiTime 12V 20Ah marine starting battery placed on a boat

A customer on his boat holds the LiTime 12V 20Ah marine starting battery next to the outboard motor

A smiling boater proudly points to his new LiTime 12V 20Ah marine starting battery inside the boat's cockpit

A fisherman on his boat holds a LiTime 12V 20Ah starting battery and gives a thumbs-up

A boater sits next to his outboard motor with the LiTime 12V 20Ah marine starting battery on the deck.

SPECS

BATTERY

Cell Type：

LiFePO4

Warranty：

5 Years

Cycle Life：

4000 Cycles at 100% DOD, 6000 Cycles at 80% DOD, 15,000 Cycles at 60% DOD

Nominal Voltage：

12.8V

Rated Capacity：

20Ah

Energy：

256Wh

Max. Expansion (Parallel & Series)：

1P1S

Internal Resistance：

≤40mΩ

Certifications：

UL-1973, FCC, CE, RoHS, UN38.3

Hot Cranking Amps (HCA)：

900A

Marine Cranking Amps (MCA)：

810A

Cold Cranking Amps (CCA)：

800A(-10℃); 650A(-18℃)

Bluetooth：

Self-Heating：

BMS

BMS：

20A

Max. Continuous Output Power：

256W

Max. Continuous Charge Current：

30A

Max. Continuous Discharge Current：

20A

Max. Charge Current (Outboard Alternator)：

80A

CHARGE

Charge Method：

CC/CV

Charge Voltage：

14.4V±0.2V

Recommend Charge Current：

10A

TEMPERATURE

Charge Temperature：

0℃ to 50℃ / 32℉ to 122℉

Discharge Temperature：

-20℃ to 60℃ / -4℉ to 140℉

Storage Temperature：

-10℃ to 50℃ / 14℉ to 122℉

Low-Temperature Protection：

√

OTHERS

Terminals：

M6 Bolts

Weight Approx.：

9.68 lbs

Size：

L7.76*W5.2*H6.69 inch

Housing Material：

ABS

Protection Class：

IP67

USER MANUAL

LiTime 12.8V 20Ah Marine Starting Battery - User Manual.pdf

COMPARE

Nominal Voltage

Energy

Hot Cranking Amps (HCA)

Marine Cranking Amps (MCA)

Cold Cranking Amps (CCA)

Bluetooth

BMS

12V 20Ah Marine Starting

$209.99 ~~$359.99~~

12.8V

256Wh

900A

810A

800A(-10℃); 650A(-18℃)

20A

12V 140Ah Dual Purpose

$529.99 ~~$669.99~~

the surface of litime 12v 140ah marine dual purpose lithium battery

12.8V

1792Wh

1500A

1200A (0℃)

1000A (-10°C); 900A (-18°C)

√

140A

FAQ

Can I use the battery to start the car engine?

No. Please DO NOT use it as a starter battery for any type of vehicle, suchas cars, motorbikes, tractors, etc.

For better using the battery, here are some safety precautions to notice:

1. Do not use this battery as a starter battery for any type of vehicle, such as cars, motorcycles, trucks, etc.

2. This battery is not suitable for engines (such as outboard motors) that use a charging coil instead of an alternator.

3. When used in marine starting equipment (such as fuel outboard engines) or in environments with vibration, ensure the battery is securely mounted. However, it should not be used in areas with intense vibrations, such as tractors.

4. When using with outboard engines or in shaking environments, make sure to securely fasten the battery to prevent damage from movement.

5. Position the battery closer to the outboard motor, as different cable lengths may cause a certain amount of voltage loss, typically between 3% and 10%. If the voltage drop caused by the cable exceeds this range, the total cable length should be reduced.

6. The 12V 20Ah marine cranking battery supports an IP67 protection rating. To avoid potential issues, do not fully submerge it in bilge water. To prevent parts of the battery from being exposed to water, it is recommended to install the battery in a waterproof battery container and/or place it in an elevated position.

How to know whether the battery can be applied to start my fuel outboard motor?

Please ensure that your fuel outboard motor meets the following conditions when selecting a battery:

Verify that the CCA (Cold Cranking Amps) required by your fuel outboard motor is less than the battery's CCA value of 800A.
If your fuel outboard motor has an alternator, please ensure that the alternator's output current is less than the battery's maximum supported charging current of 80A.

What should I do when I receive the battery?

When you receive your battery, please note that it may have a low State of Charge (SOC) due to transportation and storage. For optimal performance, we recommend charging the battery immediately to avoid over-discharge.

Fully charge the battery with battery charger for LiFePO4 lithium before first use. Battery voltage lower than 11.5V will not be able to start motors.

The duration of a single start cannot exceed 3 seconds.When the primary ignition fails, wait for 15 seconds beforerestarting.If the motor still cannot be started after three ignitions, checkfor other causes and wait 5 minutes before igniting again.

Can I connect the LiTime 12V 20Ah marine cranking battery in series or parallel?

No. It doesn't support battery in series or parallel connection.

REVIEWS

Starting battery

Awesome so far it weighs 9 lbs and replaced a 60 lb dual purpose battery I had to fabricate a battery holder as it was so small but that took an hour so no big deal starts my 60 horse Suzuki 4 stroke no problem and did I mention it weighs 9 lbs !!

Dead battery

The first two times I used it, no problems! It worked perfectly until I unknowingly turned the ignition switch on. The next thing I knew the battery went dead! Now it will not charge. Any suggestions?

This IS #5

I have now completed the battery install of all 5 batteries purchased from Litime. I have a 50 ah from my electronics 3-100 ah wired for 36 volts for my Garmin force trolling motor and the starting battery running th motor and the other electronic stuff needed on my bass boat. So far I cant say enough good things about these batteries. I have not had one fail me yet and they have all the power i need to run everything for several days without recharging. Thank you Litime for such good batteries.

LiTime 12V 20Ah 800 CCA Marine Starting Lithium Battery

Had to charge it twice, but seems to be working great. Plenty of power to start 75 horse outboard

Fair value for the size and capacity

It's a big battery it's longer than a standard battery tray so it will require modification.
But it's a very nice battery so far.
I like the Bluetooth feature where you can check the status and litime has good customer service.

Great lasting power throughout the day!

Great value for these batteries and I am very pleased on how they keep a good charge throughout the day!

Great battery for the money

This battery is VERY light and has held up well on days with multiple starts on a Yamaha 60 2 stroke. I would recommend getting a LiTime charger for this battery to top off the charge the night before you go out on the boat, using the LiTime charger i think gives this battery the best shot at lasting a decent amount of time vs using another brands generic LiFePo4 charger. Even if you get 2-3 years out of these batteries I think they are worth the price as they are 1/4th the price of a Dakota or similar "on-brand" battery.

Size: The size is compact and is very light, I was able to get more storage space and take weight off my skiff to help with draft with just changing the battery to one of these LiTimes, I also have the trolling motor battery thats 100ah and have really enjoyed the weight savings to help me get shallower.

Functionality: The 20ah rating this battery has I believe is true and not inflated, I run speakers and GPS off this battery with the motor off pretty often and sometimes for for a few hours and havent killed the battery yet so it does have good battery life. It has plenty of cranking amps to start my yamaha 60 2 stroke and I would think a 4 stroke 60hp would do well with this battery also.

Starting Battery

Like the size and weight, I have installed it in my boat but have not had a chance to run it

All Reviews

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Why LiTime is Your Best Choice

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TOP 1 LiFePO4 Brand

As the #1 LiFePO4 battery brand, LiTIme leads the market with the most complete power solutions—covering RVs, home storage, marine, golf carts, off-grid systems, and beyond.

15-Year Expertise

With 15 years of industry experience, LiTime serves over 350,000+ users globally, ensuring quality and trust. LiTime keeps innovating and has your back, always.

24/7 Expert Support

With 24/7 expert support and an average 24-hour response time, we ensure you get the help you need, anytime. Whether it's pre-sales or after-sales, we guarantee 100% support every step of the way.

Expert-Backed Quality

LiTime is certified by top organizations like RVDA, backed by over 70+ patents and recognized for quality. Let authorities and patents prove why LiTime leads the way.

Industry-Leading Tech

With EV-grade cells passing 80+ tests and a self-developed BMS with under 1% margin of error, LiTime batteries ensure 15,000 cycles, 20+ protections, and up to 10 years of reliable performance.

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Cutting-Edge Features

LiTime batteries offer a range of advanced features, including Bluetooth, low-temperature protection, self-heating, high-rate discharge, pre-charging, ensuring reliable power and peace of mind in any environment.

User-Driven Power Stories

See how LiTime batteries are changing the way real users power their lives.

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User Insights

litime lithium golf cart battery customer review: a red golf cart sits on grass

Matt Elliott

The weight difference was incredible. One 6v Battery weighed 63 lbs. this battery 38 lbs!

litime customer feedback of using lithium trolling motor battery in kayak

Reel in Florida

I think the mini is the real star of the show. 100ah in this small a package is perfect for kayaks and other small craft.

Patrick Dwivedi

I love the lighter weight of the battery. I no longer need to call on my trusty neighbors to help me install the battery inside my VW Bus.

Paul Muller

Shipping was extremely fast ( received within two days after placing order). Batteries work like a charm for our camper.

[KellG]

For the performance & reliability, I do recommend this battery

A LiTime 51.2V 100Ah battery is placed on carpet, showcasing its features alongside a tennis ball for scale, in a customer review

Dan M

The amount of power that this battery can instantly dump into the cart is awesome.

Eric Anderson

Used my new LiTime 12v 200a batteries for the first time this weekend. Couldn’t be happier!

litime customer feedback of using the battery powering fish finders

mtkeane

I would say that not only are the products great, but so is the customer service.

Greg Sapp

Very impressed with the quality and the documentation provided by LiTime.

customer review of litime lithium 12v 140ah dual purpose marine battery

Reel in Florida

The best upgrade you can make!

Artie H

Li Time US , Great customer support services

litime customer feedback of a man holding a 12v 140ah group 31 battery showing his satisfaction

Andrew Martin

This charger is a beast! Pleasantly surprised so far with LiTime products.

litime lithium golf cart battery customer review: A person stands by the golf cart

John D. Hollingsworth, Jr.

After many months of debate, I finally bit the bullet and rebuilt my Stealth 4x4 cart with the new batteries.

Customer

So far for my golf cart it's been a great battery I got the 10amp charger also no problems.

Eve Ford

Great customer service! The batteries ran our solar system on our camper with no problem.

Klaus Feldmeier

The replacement was straight forward - the new LiTimes batteries are nearly 50% lighter than the lead acid batteries.

Scott Winebarger

No complaints yet, still building my system, so far, I am impressed

[Timothy Vaughan] Vaughan

Already had my 100ah trolling motor battery out several times and it’s delivered in spades. Very happy with my purchase!

John Hogan

Though I had to reconfigure the base of the robot, I have more than enough battery capacity to run for hours.

Perry Mahnke

It's amazing how much lighter the LiTime Mini batteries are, the conversion was easy, and the fit & finish on the LiTime Minis is great.

Anthony Carita

Love how light this battery is. My mower lost about 100 Lbs of weight. The battery has a nice case and looks top quality.

Rob D.

Great Products. Really Great Support.

Matt Elliott

The weight difference was incredible. One 6v Battery weighed 63 lbs. this battery 38 lbs!

Reel in Florida

I think the mini is the real star of the show. 100ah in this small a package is perfect for kayaks and other small craft.

Patrick Dwivedi

I love the lighter weight of the battery. I no longer need to call on my trusty neighbors to help me install the battery inside my VW Bus.

Paul Muller

Shipping was extremely fast ( received within two days after placing order). Batteries work like a charm for our camper.

[KellG]

For the performance & reliability, I do recommend this battery

Dan M

The amount of power that this battery can instantly dump into the cart is awesome.

Eric Anderson

Used my new LiTime 12v 200a batteries for the first time this weekend. Couldn’t be happier!

mtkeane

I would say that not only are the products great, but so is the customer service.

Greg Sapp

Very impressed with the quality and the documentation provided by LiTime.

Reel in Florida

The best upgrade you can make!

Artie H

Li Time US , Great customer support services

Andrew Martin

This charger is a beast! Pleasantly surprised so far with LiTime products.

John D. Hollingsworth, Jr.

After many months of debate, I finally bit the bullet and rebuilt my Stealth 4x4 cart with the new batteries.

Customer

So far for my golf cart it's been a great battery I got the 10amp charger also no problems.

Eve Ford

Great customer service! The batteries ran our solar system on our camper with no problem.

Klaus Feldmeier

The replacement was straight forward - the new LiTimes batteries are nearly 50% lighter than the lead acid batteries.

Scott Winebarger

No complaints yet, still building my system, so far, I am impressed

[Timothy Vaughan] Vaughan

Already had my 100ah trolling motor battery out several times and it’s delivered in spades. Very happy with my purchase!

John Hogan

Though I had to reconfigure the base of the robot, I have more than enough battery capacity to run for hours.

Perry Mahnke

It's amazing how much lighter the LiTime Mini batteries are, the conversion was easy, and the fit & finish on the LiTime Minis is great.

Anthony Carita

Love how light this battery is. My mower lost about 100 Lbs of weight. The battery has a nice case and looks top quality.

Rob D.

Great Products. Really Great Support.

Power You Can Trust, Backed By Experts

The Power Behind Experts, Adventures, And The World’s Best

Media

Association

"Globally trusted, LiTime’s innovation in energy solutions sets a new industry standard."

"LiTime combines cutting-edge technology with unmatched reliability, powering users' lives worldwide."

"LiTime’s LiFePO4 batteries provide outstanding performance, making it the top choice for customers."

"LiTime delivers powerful, reliable, and sustainable energy solutions tailored to meet every need."

"LiTime’s customer-centric approach drives the development of unparalleled energy solutions."

"LiTime's energy solutions combine advanced R&D with real-world user insights for unmatched reliability."

"With extensive research backing it, LiTime’s products are engineered for superior quality and durability."

"Renowned for its exceptional battery technology, LiTime is a trusted leader in energy innovation."

"The world trusts LiTime for innovative and dependable energy solutions, powering homes and businesses."

"LiTime's global reputation for excellence is built on performance, reliability, and cutting-edge technology."

"LiTime’s LiFePO4 batteries are the perfect fusion of innovation and reliability for every user."

"LiTime’s commitment to research ensures their products remain at the forefront of energy solutions."

"LiTime's power solutions are trusted by users globally, offering unmatched performance and longevity."

"LiTime’s success stems from combining groundbreaking technology with a deep understanding of customer needs."

"LiTime pioneers the future of energy with innovation, reliability, and sustainability."

LiTime batteries are installed to ABYC E-13 standards, fully compliant with lithium battery requirements.

Powering passion on the water – as a member of IGFA.

Proud Member of GCSAA – Trusted by golf course professionals nationwide.

Member of RVDA – Serving the RV Industry with advanced lithium power.

Powering the RV lifestyle with Escapees-backed lithium technology.

Official FMCA commercial member delivering trusted power for motorhome owners.

Supporting professional anglers and sustainable fishing through the National Professional Anglers Association.

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LiTime 12V 20Ah 800 CCA Marine Starting Lithium Battery

Features

Upgrade Your Power: LiTime 12V 20Ah Marine Starting Battery

BMW Grade LiFePO4 Starting Cells

Self-Developed BMS for Cranking up Marine Passion

Safeguards Longivity and Performance under Low-Temp

Born for Marine Outboard with Outdoor-Rated Quality

All-Round Superior to Lead-Acid Battery

Three Fast Charging Ways

Back by Professional Testing and Certi & Committed to Provide Best Service

Suitable for Fuel Powered Outboard and Riding Lawn Mower

Trusted Power for Every Journey

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12V 20Ah Marine Starting

12V 140Ah Dual Purpose

FAQ

Can I use the battery to start the car engine?

How to know whether the battery can be applied to start my fuel outboard motor?

What should I do when I receive the battery?

Can I connect the LiTime 12V 20Ah marine cranking battery in series or parallel?

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TOP 1 LiFePO4 Brand

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