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Send me exclusive newsletter and offers from Redodo
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FEATURES
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SPECS
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FAQ
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REVIEWS
One Battery, Whole Boat
Starting, Trolling, Powering: The 3-in-1 Marine Power Solution
Real User Feedback: Why This 12V 165Ah Dual-Purpose Battery Stands Out
1200 CCA Marine Battery Built for Serious Boaters
Stay on the Water Longer with Zero Risk——15% Backup Power Always Has Your Back
The built-in Energy Reserve Mode helps preserve approximately 15% battery capacity, reducing the risk of being stranded on the water after a long day of fishing.
Best 12V Dual Purpose Marine Battery for Starting and Deep-Cycle Power
With massive 165Ah capacity and 2112Wh of energy, it can power trolling motor and marine electronics while still retaining enough reserve power for engine starting.
Flexible Charging Options for Your Group 31 Dual Purpose Marine Battery
SPECS
BATTERY
Cell Type：
LiFePO4 Starting Cells
Warranty：
5 years
Cycle Life：
4000+
Nominal Voltage：
12.8V
Rated Capacity：
165Ah
Energy：
2112Wh
Max. Expansion (Parallel & Series)：
For Starting and Deep cycle: 4P1S; For ONLY Energy Storage: 4P4S
Internal Resistance：
≤40mΩ
Certifications：
Certified by CE, FCC, RoHS, UN38.3, CE RED, FCC ID & Complies with the UL 1973 standard
Hot Cranking Amps (HCA)：
1500
Marine Cranking Amps (MCA)：
1300
Cold Cranking Amps (CCA)：
1200
Bluetooth：
YES
BMS
BMS：
150A
Max. Continuous Output Power：
1920W
CHARGE
Charge Method：
CC/CV
Charge Voltage：
14.6V
TEMPERATURE
Charge Temperature：
-20℃ to 50 ℃ / -4℉ to 122 ℉
Discharge Temperature：
-20℃ to 60 ℃ / -4℉ to 140 ℉
Storage Temperature：
-10℃ to 50 ℃ / 14℉ to 122 ℉
Low-Temperature Protection：
Yes
Low-Temperature Charging Protection Auto Recovery：
Yes
SELF-HEATING
Heating Temperature：
-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.：
33.49lb
Size：
L13*W6.77*H8.5inch
Housing Material：
ABS Housing
Protection Class：
IP67
FAQ
Q: How can I know if this 165Ah dual purpose lithium battery is suitable for starting my boat’s motor?
A:
Please ensure your motor's required CCA is ≤1200A. Also, ensure your alternator's output current is ≤165A.
If you are still unsure, contact us and share your motor’s name and specification. We’ll assist you in determining compatibility.
Q: Can I use this 1200 CCA marine battery in cold weather?
A:
Yes, the battery has low-temperature protection and self-heating function, allowing safe charging in cold conditions and reliable operation in cold conditions.
Q: Can the 165Ah Group 31 dual purpose marine battery be connected in series or parallel?
A:
Yes. For engine starting and deep-cycle use, the dual purpose marine battery supports up to four batteries in parallel. For only energy storage use, the battery supports a 4P4S configuration.
Q: Is the lithium dual purpose battery waterproof?
A:
Yes. This dual purpose lithium marine battery is rated IP67 waterproof for harsh marine environments. However, it is not designed for prolonged submersion in bilge water. For additional protection, we recommend installing it in a waterproof battery box or placing it in an elevated, sheltered area such as inside the cabin.
Q: Can I use the Group 31 marine battery to power my fish finder?
A:
The 12V 165Ah dual-purpose marine battery provides stable, consistent power for fish finders, GPS units, trolling motors, and other onboard electronics. Its large capacity ensures extended runtime for full-day fishing trips.
Q: How do I charge the Redodo lithium dual purpose marine battery?
A:
We recommend charging the dual purpose marine battery by using the following methods:
- - Shore Power: 14.6V 40A LiFePO4 battery charger (≈4.2 hours to full charge)
- - Fuel Outboard Engine Charging: Supports up to 165A max charging current
- - Generator with 12V AC-DC lithium Charger
- - Solar Panel with MPPT controller
For optimal performance and battery longevity, always use a LiFePO4-compatible charger or properly configured charging system.
Read More: How To Charge LiFePO4 Battery Safely?
Q: What’s the difference between this battery and the Redodo 165Ah Bluetooth Battery?
A:
Both of them offer the same 165Ah capacity in a Group 31 size and Bluetooth monitoring, but they are designed for different applications.
This 12V 165Ah Dual Purpose Marine Battery is specifically engineered for marine use, combining 1200 CCA starting power with deep-cycle energy storage; but the 12V 165Ah Group 31 Bluetooth Battery is a dedicated deep-cycle battery, providing continuous power delivery for RVs, solar, off-grid setups, marine electronics, and more.
REVIEWS
Why buy from Redodo?
Grade-A cells at super friendly price
We do 100% testing of all Redodo batteries before shipping to you, with grade-A cells and high-quality materials at radically prices than comparable retails.
2-5 working days fast and free delivery
In order to let you start your quality life faster, our team is able to deliver your order from our US local warehouse to your front door within 2-5 business days.
Lifetime technical consult service
Redodo provides 5-year warranty for batteries (2-year for chargers) and lifetime consultation support, we hope you can feel easy and enjoyable when you use the battery.
We love to help
Our Team injects passion, integrity, respect, and professionalism into our LiFePO4 batteries and business, if you have any questions, please feel free to contact us, we love to help.
