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18% OFF
LiTime 12V 165Ah dual purpose smart self-heating battery
LiTime 12V 165Ah dual purpose smart self-heating battery
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icon shows litime lithium cranking/starting batteries
Marine starting power—strong, fast, and cold-ready.
icon of litime smart bluetooth function batteries
Bluetooth 5.0 for battery status tracking—SOC, voltage, power, and more.
litime self-heating batteries
Smart heating below 41°F for safer cold-weather charging.
function icon of litime low-temp protection batteries
Low-Temp Charging Protection – Stops charging in cold environments to ensure safety and extend battery lifespan.
litime water proof products
Waterproof design for resisting water—safe in wet conditions.

12V 165Ah Dual Purpose Smart Self-Heating

Group 31: L13*W6.77*H8.5 in
1200 CCA and 1300 MCA
Marine Starting + Deep Cycle in One
$569.99
$699.99
47% OFF
litime 12v 20ah lifepo4 marine starting battery
litime 12v 20ah lifepo4 marine starting battery
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icon shows litime lithium cranking/starting batteries
Marine starting power—strong, fast, and cold-ready.
function icon of litime low-temp protection batteries
Low-Temp Charging Protection – Stops charging in cold environments to ensure safety and extend battery lifespan.

12V 20Ah Marine Starting

Group U1: L7.76W*5.2H*6.69 in
BMW-Grade Cells
800 CCA & 810 MCA
$189.99
$359.99
Need Help?
Have Questions or Want to Discuss Your Lithium Power System Needs?

FAQ

Can I use the marine starting 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 lithium cranking 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 & 12V 140Ah Dual Purpose 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.

Can this lithium marine starting battery start my fuel outboard motor?

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

  1. Verify that the CCA (Cold Cranking Amps) required by your fuel outboard motor is less than the battery's CCA value of 650A.
  2. 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 marine starter 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 marine cranking battery in sereis or parallel?

Yes, you can connect the best marine starting battery in sereis 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) 560Ah battery system.

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

2. For ONLY Energy Storage

Support connecting up to 16 identical batteries for up to:4 in series as 48V (51.2V) battery system or 4 in parallel as 560Ah battery system.


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

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

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

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

How many CCA do I need to start my outboard motor?

You need at least the CCA your outboard’s manual specifies (or higher). If your spec is MCA, match MCA instead.

LiTime’s lineup covers small outboards up to 225Hp with options from 800–1300 CCA/MCA.

・Many setups fit the 12V 20Ah lithium Marine Starting battery (800 CCA / 810 MCA).

・ If you want more margin or have a bigger engine/electronics load, choose the 12V 165Ah Dual Purpose (1200 CCA / 1300 MCA).

FAQ

1. Can I run my truck AC while the engine is completely off?
2. How does it help save money in summer?
3. Is it suitable for sleeper cab trucks?
4. Why use lithium battery power instead of idling all night?
5. Can it support parking AC use in summer?
6. What products are recommended for this setup?

The NO.1 LiFePO4 Battery Brand

16 Years of Innovation and Expertise in the #1 LiFePO4 Battery
The No.1 LFP Brand
100% Quality Guarantee
NO.1 LiFePO4 Batery
The industry best lithium battery brand.
NO.1 LiFePO4 Batery
NO.1 LiFePO4 Batery
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.
16-Year Expertise
16 years of trust. Powering 350,000+ users worldwide.
16-Year Expertise
16-Year Expertise
With 16 years of industry experience, LiTime serves over 350,000+ users globally, ensuring quality and trust. LiTime keeps innovating and has your back, always.
One-Stop Solution
Complete LiFePO4 solutions. All in LiTime.
One-Stop Solution
One-Stop Solution
From 12V to 48V, chargers to accessories, LiTime offers the market’s most complete selection—your one-stop power solution, delivering everything you need and more.
24/7 Expert Support
24/7 expert support—before, during, and after your purchase.
24/7 Expert Support
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.
Industry-Leading Tech
Leading LiFePO4 innovation. Powered for what’s next.
Industry-Leading Tech
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
All-in-one battery line. From essential to advanced features.
Cutting-Edge Features
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.
Expert-Backed Quality
Certified. Patented. Proven. LiTime leads with trust.
Expert-Backed Quality
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.