LiTime 12V 20Ah 800 CCA Marine Starting Lithium Battery
800 CCA & 810 MCA – Crank up Your Marine Outboard with Ease
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Top BMW-Grade Cells: Combines high performance and safety with 5000+ cranking cycles, delivering a luxury-grade and long-lasting marine experience.
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45C Peak Discharge Rate: Delivers unmatched starting power, ensuring quick and reliable ignition in any condition.
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Reliable in All Conditions: With 800CCA (-10℃), 810MCA, and 900HCA, it ensures powerful starts at any temperature.
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Patented Metal Constraint Technology: Effectively prevents heat expansion, enhancing stability, durability, and extending battery life.
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20+ Advanced Protections: Low-temp cut-off, overload protection with auto-recovery (30s), salt-spray resistance, moisture-proof.
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IP67 Waterproof & Dustproof: Ideal for marine environments.
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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)
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Faster Charging: Supports 1.5C (30A) max. charging rate, just 40 mins to be fully charged.
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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.
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Certifications: FCC, CE, RoHS, UN38.3.
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Safety Guarantee: LiTime batteries are installed to ABYC E-13 standards, fully compliant with lithium battery requirements.
- Smart Storage Mode: May arrive in a low-power state to preserve cell health. This is normal; simply use a 12V 10A charger to wake it to full power.
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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 165Ah dual purpose lithium marine battery.
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NOT Dual-purpose: For a dual-purpose using, try LiTime 12V 165Ah dual purpose lithium marine battery.
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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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Upgrade Your Power: LiTime 12V 20Ah 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.
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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.
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.
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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.
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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.
All-Round Superior to Lead-Acid Battery
Experience unparalleled power with LiTime 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 lithium 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.
Suitable for Fuel Powered Outboard Motor
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Wide Application
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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.
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Trusted Power for Every Journey
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12V 20Ah Marine Starting
Why did I sometimes receive LiTime 12V 20Ah battery with low power or in a state that requires activation?
This is completely normal. Our batteries use high-performance starter cells, which have higher reactivity to deliver stronger starting current. To preserve battery life, the battery enters a low-power protection mode after prolonged storage. If you measure the voltage at this stage, it may read between 3–5V — this is expected. Not to worry. Simply recharge it using a charger with 0V activation function to easily wake the battery.
(We recommend using an official LiTime LiFePO4 battery charger.)
Can I use the 12V 20Ah lithium 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 12V 20Ah 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 12V 20Ah LiFePO4 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 lithium ion battery in series or parallel?
No. It doesn't support battery in series or parallel connection.
I have had the LiTime 12V 20Ah 800 CCA Marine Starting Lithium Battery for over a year. So far it has outperformed any other battery that I have put in my 20hp Gravely mower. I did have some problems early on with what I thought was the battery but ended up being the mower. They did work with me on troubleshooting the battery at that time.
Great little, lightweight power source. Installed in my '97 Champion boat with 150 motor. After charging, went to boat ramp to check if it had the CCA to start the motor. While the engine took several (5) tries to start it fired up. I let it warm up and shut motor off. I then started it several times to simulate actual fishing activity to see how much charge was used each time. It performed phenomenally, once back home I put it on my charger and it was fully charged in less than 2 min
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 !!
Starts right up no issues!
First step in getting my 30yr old Johnson 60hp running again was getting power to the starter. This battery is a champ for getting it started. And I'm counting on this lasting a lot longer than any lead battery. Great labor day deal and value for getting my project started
So far love it. It’s super light weight and small. Would love to find a battery tray to fit it.
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?
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.
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Advantages of Buying from LiTime.com: Benefits, Discounts, And VIP Service
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.
17-Year Expertise
With 17 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.
Power You Can Trust, Backed By Experts
The Power Behind Experts, Adventures, And The World’s Best
