How long will a 100Ah lithium battery run a trolling motor?

The run time of your trolling motor depends on the amp hour (Ah) capacity of your battery and the motor's current draw. Follow this simple formula:Run Time (hours) = Battery Capacity (Ah) / Motor Current Draw (A)For example:Your trolling motor draws 54A at full throttle. You have a 100Ah battery.Run Time = Battery Capacity / Current Draw= 100Ah / 54A= 1.85 hours= 1 hour and 51 minutesSo the 100Ah battery would run the 54A motor for about 1 hour 51 minutes at full speed.To find low speed run time:If the motor draws 10A at half throttle.Run Time = Battery Capacity / Current Draw= 100Ah / 10A= 10 hours

Can I use LiTime 12V 100Ah TM LiFePO4 lithium batteries as starting batteries?

No. LiTime LiFePO4 lithium batteries are not intended to be used as starting batteries but deep cycle energy storage, please do not use them to start any devices.

Can I charge LiTime 12V 100Ah TM LiFePO4 lithium batteries in cold weather (under freezing temperatures)?

LiTime 12V 100Ah TM LiFePO4 batteries can charge between 32°F to 113°F (0°C to 45°C). The 12V 100Ah TM version has low-temperature charging protection function, it would cut off charging when it's below 0℃.

What is a group 31 battery?

The group 31 batteries is the most popular battery size, measuring approximately L13*W6.8*H9.44 inch, which is widely used in boats, RVs, home storage, and off-grid. LiTime 12V 100Ah TM LiFePO4 battery measures L13*W6.77*H8.43 inch ans is 2~3X lighter and 5X lifespan of traditional group 31 batteries. It is a powerful and compact replacement for group 31 batteries.Suggest reading on Full Guide of Group 31 Battery.

How much does a group 31 battery weigh?

LiTime 12V 100Ah TM LiFePO4 LiFePO4 battery weighing 23.4 lbs, is 1/3 the weight of a traditional group 31 agm battery or group 31 lead acid battery and releases larger energy. It's a perfect replacement to AGM group 31.

Do you have battery box for group 31?

Yes, LiTime has a portable battery box for group 31. Built in voltmeter, it can be used for marine & RV, fitting for group size 24 battery, group 27 battery size and group 31 battery size.

How to charge LiTime 12V 100Ah TM lithium batteries?

1. Using Solar PanelsThe battery can be fully charged in one day (with effective sunshine 4.5 hrs/day) by 300W solar panels. It may take more than one day to fully charge the battery by ≥300W solar panels since the duration and intensity of light would be a great factor for their charging efficiency.Besides solar panels, there are 2 more ways to charge. Suggest reading: 3 reliable ways to charge LiFePO4 lithium batteries2. Generator/AlternatorIf the alternator or generator supports DC output, a DC-to-DC charger is needed to connect the battery to the generator; if your alternator or generator supports AC output, please add a suitable battery charger to connect the battery and the generator according to our recommendations. The Recommended Charging Voltage: 14.2V - 14.6V. The Recommended Charging Current: ① 20A (0.2C): the battery will be fully charged in around 5 hrs to 100% capacity; ② 50A (0.5C): the battery will be fully charged in around 2 hrs to around 97% capacity.3. LiFePO4 Smart ChargersTo charge 12V battery, it is recommended to use 14.6V battery charger.The Recommended Charging Voltage: 14.2V - 14.6V.The Recommended Charging Current: ① 20A (0.2C): the battery will be fully charged in around 5 hrs to 100% capacity; ② 50A (0.5C): the battery will be fully charged in around 2 hrs to around 97% capacity.

Can I connect the batteries more than 4 in parallel?

During use, inconsistencies between cells can increase over time. When connecting too many batteries in parallel, this can cause faster degrading batteries to trigger protection and fail prematurely. Therefore, paralleling more batteries is not always better. The industry standard maximum is 4 paralleled batteries.

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✅Like New✅LiTime 12V 100Ah TM LiFePO4 Battery

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Warranty Period Like New Batteries:
12V (≤20Ah): 2 years · 12V (>20Ah): 2 years
24V (≥25Ah) / 36V (≥50Ah) / 48V (all) / 51.2V (≥30Ah): 3 years

The like new batteries: These are open-box returns due to sizing errors. They may show slight cosmetic wear but function perfectly. Buy with confidence.

The very good batteries: These have been tested to ensure full functionality and normal performance.
(1) Cosmetic imperfections may be present, such as visible signs of prior use, light wear, minor scratches, or small areas of label damage, which do not affect product information identification.
(2) Non-personal markings or identifiers may also be present.
These cosmetic conditions do not affect performance, reliability, or normal use.

May be missing accessories (e.g., user manual, bolts). Please contact us directly with any questions prior to purchase. If bolts are missing upon arrival, please contact us and we will ship them to you.

GOLD SPONSOR FOR 2023 LL BRAWL, 2024 MLF
12V marine battery, best lithium battery for 30~70 lbs trolling motors, also suitable for RVs, solar systems, and home energy storage
Low-temperature charging cutoff protection, preventing charging below 0°C to protect the battery and extend its life.
Features robust 20+ layer BMS protection with enhanced moisture, dust and salt spray resistance for reliability in humid environments.
EV Grade-A LiFePO4 cell only, 4000+ cycles at 100% DOD
Ultimate replacement for lead-acid: 1/5 the weight, same power (V.S. a 12V 200Ah lead acid)
L13*W6.77*H8.43 inch, Equivalent to group 31 batteries
Increased instantaneous load capacity for better control of your trolling motor
Upgraded shock resistance for worry-free boating, even in rough waters
Auto overload protection & recovery
Flexible 3 Recharging Ways (LiFePO4 charger/Solar/Generator)
Expandable up to 4S4P for a 48V 400Ah system

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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.

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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.

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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.

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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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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.

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User Insights

I’ve been using the battery primarily as an emergency power backup at home — it gives me peace of mind knowing I’ve got reliable energy if the grid goes down.

Drop in for our travel trailer Great addition to our travel trailer. Now we can spend endless time at a remote campsite without worrying we will run out of power.

Omg awesome! Things are looking great so far. With all the great reviews on the web. I’m feeling pretty good about the two 200 AH batteries I bought. Thank you for a great product

Fairly light weight at 80 lbs. Only took about a day to fully charge with solar panels, and it runs my 3000 W inverter with no issues. 400ah is well worth getting instead of 4-100ah batteries connected together due to less wiring and possible loose connections. Highly recommend.

Installed 2 100ah batteries in boat as my house bank with the Litime DC to DC 40amp charger to protect alternator. I have to say very happy with everything.

Hamjazz

I’ve been using the battery primarily as an emergency power backup at home — it gives me peace of mind knowing I’ve got reliable energy if the grid goes down.

Esther Snow

Drop in for our travel trailer Great addition to our travel trailer. Now we can spend endless time at a remote campsite without worrying we will run out of power.

James

Omg awesome! Things are looking great so far. With all the great reviews on the web. I’m feeling pretty good about the two 200 AH batteries I bought. Thank you for a great product

Allan

Fairly light weight at 80 lbs. Only took about a day to fully charge with solar panels, and it runs my 3000 W inverter with no issues. 400ah is well worth getting instead of 4-100ah batteries connected together due to less wiring and possible loose connections. Highly recommend.

Donald L Anderson

Installed 2 100ah batteries in boat as my house bank with the Litime DC to DC 40amp charger to protect alternator. I have to say very happy with everything.

✅Like New✅LiTime 12V 100Ah TM LiFePO4 Battery

Warranty Period Like New Batteries:
12V (≤20Ah): 2 years · 12V (>20Ah): 2 years
24V (≥25Ah) / 36V (≥50Ah) / 48V (all) / 51.2V (≥30Ah): 3 years