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overview of litime 12v 165ah dual purpose marine lithium battery

A Li Time 165Ah dual-purpose marine battery showing its compact dimensions and 33.49 lbs weight

Li Time 165Ah battery highlighting its compatibility with outboard motors under 300HP

Li Time 165Ah battery showing 1200 CCA at 14°F and 1300 MCA at 32°F for cold starts

Li Time 165Ah battery showing app control for its 25% emergency reserve power feature

real-time monitoring with bluetooth of litime 12v 165ah dual purpose marine battery

Comparison showing the Li Time 165Ah battery is lighter and has 8x the lifespan of a lead-acid

Li Time 165ah battery's self-heating feature for safe charging in sub-zero weather.

Li Time 165Ah battery showing its 150A BMS, IP67 rating, and 4000+ deep cycle life

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Features

Starting

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

Bluetooth

Bluetooth 5.0 for battery status tracking—SOC, voltage, power, and more.

Self-Heating

Smart heating below 41°F for safer cold-weather charging.

Low-Temp

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

Waterproof

Waterproof design for resisting water—safe in wet conditions.

New

LiTime 12V 165Ah Dual Purpose Marine Lithium Battery | Bluetooth & 1200 CCA

Q: Can I use this battery to start a car engine?

Important: Please DO NOT use this battery as a starter battery for any type of vehicle, including cars, motorcycles, tractors, etc.For optimal use of the battery, please observe the following safety precautions:1. Engine Compatibility: Not compatible with the outboard motor without a built-in regulator, or older voltage regulators.2. Mounting Requirements: When using in marine starting equipment (such as fuel outboard engines) or in vibrating environments, ensure the battery is securely mounted. It should not be used in areas with severe vibrations, such as tractors.3. Secure Fastening: Ensure the battery is fastened securely when used with outboard engines or in unstable environments to prevent damage from movement.4. Cable Length Considerations: Position the battery as close to the outboard motor as possible, as varying cable lengths can result in voltage loss. If the voltage drop exceeds this range, reduce the total cable length.

Q: Can LiTime 12V 165Ah dual-purpose battery really start my fuel-powered outboard motor?

Yes. With 1200 CCA @14°F and 1300 MCA @32°F, it can reliably crank outboard motors up to 300HP, including Mercury, Honda, Suzuki, Evinrude, and Tohatsu. Before purchasing, check that your motor's required CCA is ≤1200A. If you're unsure, share your motor's CCA/MCA requirements and alternator charging current, and we'll help confirm compatibility.

Q: Can I connect the 12V 165Ah dual-purpose marine battery in series or parallel?

Yes, you can connect the battery in series and parallel. But here are some limitations to follow:1. For Starting and Deep Cycle:Support connecting up to 4 identical batteries in parallel for up to:12V(12.8V) 660Ah battery system.Note: It can only be connected in parallel instead of a series connection.2. For ONLY Energy Storage:Support connecting up to 16 identical batteries for up to: 4 in series as a 48V (51.2V) battery system or 4 in parallel as a 660Ah battery system.To connect in series or parallel, batteries should meet the following conditions:a. identical batteries with the same battery capacity (Ah) and BMS (A);b. from the same brand (as lithium batteries from different brands have their special BMS);c. purchased in near time (within one month).

Q: What should I do when I receive the battery?

1. Charge before first use: The battery may arrive with low SOC due to shipping/storage. Fully charge it with a LiFePO4 charger before use to avoid over-discharge.2. Starting requirements: Battery voltage must be above 11.5V to start a motor. Each start should not exceed 3 seconds; if it fails, wait 15 seconds before retrying. After 3 failed attempts, wait 5 minutes and check for other causes.3. Bluetooth activation: Some Bluetooth batteries may arrive “off,” showing 3–5V. This is normal. Simply connect to an AC-DC LiFePO4 charger or MPPT solar controller for 3–10 seconds to activate.4. Storage tips: For long-term storage, charge to 50% SOC and recharge every 3 months to maintain performance.

Q: Is the dual-purpose battery waterproof?

Yes. The 12V 165Ah marine starting battery is rated IP67 waterproof and dustproof. However, it should not be fully submerged in bilge water. For added protection, we recommend installing it in a waterproof battery box or mounting it in an elevated or sheltered position such as inside the cabin.

$519.99

$619.99

16% OFF

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

One battery for Two Powers — From Outboard Starts to Onboard Power

2-in-1 Functionality: Powers fuel-powered outboard motor cranking & marine devices (fish finders, trolling motors). Eliminates dual heavy batteries, saves space & cuts extra costs.
Wide Compatibility: Fits most fuel-powered outboard motors, including Mercury, Honda, Suzuki, Evinrude, Tohatsu and more. ABYC-compliant installation standard ensures safe, worry-free cross-brand use.
1200 CCA Starting Power: With 1200CCA(@14°F)/ 1300MCA(@32°F), eliminates the risk of cold-start failure—so your fuel-powered outboard fires up instantly, even on chilly mornings.
Bluetooth 5.0 Monitoring: Remotely OTA upgrade, control discharge & check status via LiTime APP. No more worry about SOC guessing to avoid the unexpected power outages.
25% Emergency Power Reserve: Automatically reserve 25% SOC so you can always restart your engine and return safely—even after a full day of fishing.
Highest Energy Density in Group 31: With 2112Wh in Group 31 size, 1.65x more energy than the same LiFePO4, 3.5x more and half the weight of lead-acid.
Self-Heating Tech: Activates below 41°F (5°C) to ensure charging, heats to 50°F (10°C) for normal use, and stops discharge at -4°F (-20°C) to protect the battery in extreme cold.
10-Year Lifespan: 5000+ cranking/4000+ deep cycles (100%DOD). Outperforms lead-acid (200-500 cycles). 5-year service ensures long-term reliability.

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1 Pack

$519.99 $619.99

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$1,024.38 $1,239.98

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$719.48 $869.98

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$519.99

$619.99

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12V 165Ah Dual Purpose

$519.99

$619.99

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Features Specs FAQ Reviews Compare User Manual

One Battery, Two Powers
— From Outboard Starts to Onboard Power

Tired of carrying two heavy batteries? Only one LiTime 12V 165Ah dual purpose lithium marine battery is born for two purposes. With 1200CCA, it reliably cranks fuel-powered outboard motors up to 300HP, even in cold conditions. With 2112Wh capacity and 4000+ cycles, it keeps your fish finder, trolling motor, lights, and other onboard electronics running without worry.

Li Time 165Ah battery's dual-purpose use: 5000+ cranks and 4000+ deep cycles

Reliable Starts Even in the Cold

No more weak cranking or slow starts. With 1200 CCA at 14°F and 1300 MCA at 32°F, LiTime 12V 165Ah dual-purpose marine battery delivers instant, confident engine starts in any weather. Whether you’re running a Mercury, Honda, Suzuki, Evinrude, or Tohatsu outboard, you’ll have the power you need to fire up quickly and head out without worry.

LiTime 165ah battery showing its 1200 CCA for cold starts and compatibility with major motor brands.

Smart Bluetooth Made Monitoring with Ease

Check battery status, switch on, or manage discharge directly from your phone. Manage 25% emergency reserve or emergency discharge with one tap. Plus, with the newest OTA upgrades, LiTime 12V 165Ah dual purpose lithium battery always stays updated with the latest LiTime BMS features.

A user on a boat viewing the Li Time battery app's data, device controls, and power reserve mode.

Upgrade to 12V 165Ah for Stronger Power

LiTime 12V 165Ah dual purpose lithium battery takes performance to the next level. With 1200CCA@14℉(vs. 1000CCA), 150A BMS (vs. 140A), and 2112Wh energy (vs. 1792Wh), it upgrades from 140ah at smoother engine starts, more reliable power for your electronics, and extended runtime on every trip.

Infographic highlighting the Li Time 165Ah battery's specs: 1200 CCA, 150A BMS, and 2112Wh energy.

Compact Design, Maximum Capacity

LiTime 12V 165Ah dual purpose lithium battery delivers 76% more energy (2112Wh) while saving 50% space and cutting 75% weight compared to two 12V 100Ah lead-acid. Enjoy easier installation, more storage room, and longer runtime—all in the compact Group 31 size.

IP67 Protection, Marine-Grade Confidence

LiTime 12V 165Ah dual purpose lithium battery comes with IP67 protection—water-proof, dust-proof, and salt-spray-proof. Whether you’re navigating rough seas, fishing in saltwater, or docking along the coast, it provides reliable performance and long-lasting durability in the harshest marine environments.

A Li Time 165Ah battery on a beach, highlighting its IP67 waterproof and salt spray-proof rating.

Built for Safety, Proven to Last

LiTime 12V 165Ah dual purpose marine battery features self-developed BMS with 20+ smart protections—guarding against overcharge, over-discharge, overcurrent, overheating, and short circuits. Upgraded with low-temp cut-off, moisture and salt-spray resistance, plus 30s auto-recovery from overload, it ensures dependable performance even in harsh environments.

LiTime 165ah battery highlighting its 20+ protections, including over-charge and short-circuit

One Battery Does It All

LiTime 12V 165Ah dual purpose lithium marine battery lets you crank your outboard with confidence and power your onboard electronics all day—lights, radar, fish finder, and more. One battery, no extra hassle.

Li Time battery's ability to both start an engine and power marine electronics

4 Charging Methods

Whether you use LiFePO4 battery charger, outboard alternator, generator, or solar panel, you can fully charge your battery efficiently and reliably.

BATTERY

Cell Type：

LiFePO4

Warranty：

5 Years

Cycle Life：

≥ 5000 Cranking Times

Nominal Voltage：

12.8V

Rated Capacity：

165Ah

Energy：

2112Wh

Max. Expansion (Parallel & Series)：

Dual Purpose: 4P1S; Energy Storage: 4P4S

Internal Resistance：

≤40mΩ

Certifications：

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

Hot Cranking Amps (HCA)：

1500A

Marine Cranking Amps (MCA)：

1300A

Cold Cranking Amps (CCA)：

1200A(-10°C)

Bluetooth：

√

Self-Heating：

√

BMS

BMS：

150A

Max. Continuous Output Power：

1920W

Max. Continuous Charge Current：

150A

Max. Continuous Discharge Current：

150A

Max. Charge Current (Outboard Alternator)：

165A

CHARGE

Charge Method：

CC/CV

Charge Voltage：

14.4V ± 0.2V

Recommend Charge Current：

33A

TEMPERATURE

Charge Temperature：

-20°C to 50°C / -4°F to 122°F

Discharge Temperature：

-20°C to 60°C / -4°F to 140°F

Storage Temperature：

-10°C to 50 °C / 14°F to 122°F

Low-Temperature Protection：

√

Automatic Discharge Off：

<-4°F/-20°C

Automatic Charge Off：

＜32°F/0°C

Automatic Charging Recovery：

≥41°F/5°C

SELF-HEATING

Heating Temperature：

Charge: -20°C to 5°C / -4°F to 41°F

Approx. Heating Time：

40-70 mins (from -10°C/14°F); 80-120 mins(from -20°C/-4°F)

Required Minimum Charge Current for Heating Function：

15A

OTHERS

Terminals：

M8 Bolts

Weight Approx.：

33.49 lbs

Size：

L13*W6.77*H8.5 in (Group 31 Size)

Housing Material：

ABS

Protection Class：

IP67

LiTime 12.8V 165Ah Dual Purpose Battery - User Manual.pdf

Energy

Max. Expansion (Parallel & Series)

Hot Cranking Amps (HCA)

Marine Cranking Amps (MCA)

Cold Cranking Amps (CCA)

Bluetooth

Self-Heating

12V 165Ah Dual Purpose

$519.99 ~~$619.99~~

2112Wh

Dual Purpose: 4P1S; Energy Storage: 4P4S

1500A

1300A

1200A(-10°C)

√

12V 20Ah Marine Starting

$189.99 ~~$359.99~~

256Wh

1P1S

900A

810A

800A(-10℃); 650A(-18℃)

12V 140Ah Dual Purpose

$476.99 ~~$669.99~~

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

1792Wh

For Starting and Deep cycle: 4P1S; For ONLY Energy Storage: 4P4S

1500A

1200A (0℃)

1000A (-10°C); 900A (-18°C)

√

12V 165Ah Smart

$349.99 ~~$509.99~~

overview of LiTime 12V 165Ah Bluetooth Lithium Battery

2112Wh

4P4S

√

Can I use this battery to start a car engine?

Important: Please DO NOT use this battery as a starter battery for any type of vehicle, including cars, motorcycles, tractors, etc.

For optimal use of the battery, please observe the following safety precautions:

1. Engine Compatibility: Not compatible with the outboard motor without a built-in regulator, or older voltage regulators.

2. Mounting Requirements: When using in marine starting equipment (such as fuel outboard engines) or in vibrating environments, ensure the battery is securely mounted. It should not be used in areas with severe vibrations, such as tractors.

3. Secure Fastening: Ensure the battery is fastened securely when used with outboard engines or in unstable environments to prevent damage from movement.

4. Cable Length Considerations: Position the battery as close to the outboard motor as possible, as varying cable lengths can result in voltage loss. If the voltage drop exceeds this range, reduce the total cable length.

Can LiTime 12V 165Ah dual-purpose battery really start my fuel-powered outboard motor?

Yes. With 1200 CCA @14°F and 1300 MCA @32°F, it can reliably crank outboard motors up to 300HP, including Mercury, Honda, Suzuki, Evinrude, and Tohatsu. Before purchasing, check that your motor's required CCA is ≤1200A. If you're unsure, share your motor's CCA/MCA requirements and alternator charging current, and we'll help confirm compatibility.

Can I connect the 12V 165Ah dual-purpose marine battery in series or parallel?

Yes, you can connect the battery in series and parallel. But here are some limitations to follow:

1. For Starting and Deep Cycle:

Support connecting up to 4 identical batteries in parallel for up to:12V(12.8V) 660Ah battery system.

Note: It can only be connected in parallel instead of a series connection.

2. For ONLY Energy Storage:

Support connecting up to 16 identical batteries for up to: 4 in series as a 48V (51.2V) battery system or 4 in parallel as a 660Ah battery system.

To connect in series or parallel, batteries should meet the following conditions:

a. identical batteries with the same battery capacity (Ah) and BMS (A);

b. from the same brand (as lithium batteries from different brands have their special BMS);

c. purchased in near time (within one month).

What should I do when I receive the battery?

1. Charge before first use: The battery may arrive with low SOC due to shipping/storage. Fully charge it with a LiFePO4 charger before use to avoid over-discharge.

2. Starting requirements: Battery voltage must be above 11.5V to start a motor. Each start should not exceed 3 seconds; if it fails, wait 15 seconds before retrying. After 3 failed attempts, wait 5 minutes and check for other causes.

3. Bluetooth activation: Some Bluetooth batteries may arrive “off,” showing 3–5V. This is normal. Simply connect to an AC-DC LiFePO4 charger or MPPT solar controller for 3–10 seconds to activate.

4. Storage tips: For long-term storage, charge to 50% SOC and recharge every 3 months to maintain performance.

Is the dual-purpose battery waterproof?

Yes. The 12V 165Ah marine starting battery is rated IP67 waterproof and dustproof. However, it should not be fully submerged in bilge water. For added protection, we recommend installing it in a waterproof battery box or mounting it in an elevated or sheltered position such as inside the cabin.

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Why LiTime is Your Best Choice

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.

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.

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"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 165Ah Dual Purpose Marine Lithium Battery | Bluetooth & 1200 CCA

One Battery, Two Powers — From Outboard Starts to Onboard Power

Reliable Starts Even in the Cold

Smart Bluetooth Made Monitoring with Ease

Upgrade to 12V 165Ah for Stronger Power

Compact Design, Maximum Capacity

IP67 Protection, Marine-Grade Confidence

Built for Safety, Proven to Last

One Battery Does It All

4 Charging Methods

BATTERY

BMS

CHARGE

TEMPERATURE

SELF-HEATING

OTHERS

12V 165Ah Dual Purpose

12V 20Ah Marine Starting

12V 140Ah Dual Purpose

12V 165Ah Smart

Can I use this battery to start a car engine?

Can LiTime 12V 165Ah dual-purpose battery really start my fuel-powered outboard motor?

Can I connect the 12V 165Ah dual-purpose marine battery in series or parallel?

What should I do when I receive the battery?

Is the dual-purpose battery waterproof?

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TOP 1 LiFePO4 Brand

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One Battery, Two Powers
— From Outboard Starts to Onboard Power