LiThink 36V 50Ah Trolling Motor LiFePO4 Battery with 100A BMS, Bluetooth & Self-Heating
LiThink 36V 50Ah Trolling Motor LiFePO4 Battery with 100A BMS, Bluetooth & Self-Heating
LiThink 36V 50Ah Trolling Motor LiFePO4 Battery with 100A BMS, Bluetooth & Self-Heating

Why it stands out

100A BMS

30+ Protections

Alloy

Internal Frame

Group 31

Size

Low Temp

Protection

Self

Heating

Bluetooth® 5.4

App

Why it stands out

100A BMS

30+ Protections

Alloy

Internal Frame

Group 31

Size

Low Temp

Protection

Self

Heating

Bluetooth® 5.4

App

LiThink 36V 50Ah Trolling Motor LiFePO4 Battery with 100A BMS, Bluetooth & Self-Heating

Sale price $399.99Regular price $599.99 39999:59999 Save $200.00
Ten-year warranty & 30-day free return policy included
350A Surge Support
Built for short motor start-up peaks and pulsed trolling loads.
Reinforced Inside
Alloy-frame internal structure for vibration and marine movement.
100A Smart BMS
Stable current support and protection for 36V trolling motor use.
IP67 Protection
Sealed for wet marine compartments and outdoor boat environments.
36V Trolling Motor Ready
Designed for fishing boats, bass boats, and 36V trolling motors.
Bluetooth App
Monitor SOC, voltage, current, temperature, and alerts.
Self-Heating
Supports safer charging in cold-weather conditions.
Group 31 Upgrade
One cleaner lithium solution for many marine battery compartments.
Core Battery Advantages
  • Designed for 36V trolling motors: Built for fishing boats, bass boats, and marine electric propulsion systems that need stable 36V power.
  • Group 31 LiFePO4 upgrade: Helps replace bulky multi-battery lead-acid setups with one cleaner, lighter, and easier-to-install lithium solution.
  • Bluetooth smart monitoring: Check SOC, voltage, current, temperature, alerts, and charging/discharging status directly from the app.
  • Longer-lasting than lead-acid: Rated at 38.4V 50Ah / 1920Wh and designed for 4,000+ cycles, helping reduce maintenance and battery replacement frequency.
Internal Build & Safety
  • Reinforced internal structure: Built with a high-strength alloy frame, fiberglass busbar sleeving, six-sided epoxy insulation plates, and screw-locking hardware to improve vibration resistance and long-term safety.
  • Built for marine movement: Helps reduce risks from vibration, movement, abrasion, and electrical contact during fishing, boating, and trailer transport.
  • IP67 protection: Sealed housing helps protect against dust and water exposure, making it suitable for trolling motor compartments and demanding marine environments.
  • Lightweight marine power: Approx. 15.9 kg / 35.05 lbs, making it easier to carry, install, and remove than traditional lead-acid setups.
  • Solid terminal hardware: M8 × 14 mm terminals with recommended tightening torque of 12 N·m; discharge cut-off voltage: 32.4V.
Power Output & Charging
  • 100A smart BMS: Provides intelligent protection against overcharge, over-discharge, overcurrent, short circuit, and temperature risks while supporting demanding 36V trolling motor use.
  • Max. continuous discharge current: Up to 100A, giving 36V trolling motor systems steady current support for fishing and maneuvering.
  • Surge discharge support: 350A/1s, 250A/3s, 200A/5s, 150A/10s — built to support short motor start-up and pulsed load demands.
  • Max. continuous output power: Up to 3840W, suitable for high-performance 36V marine electric power setups.
  • Charging method: CC/CV charging with 43.8V charge voltage.
  • Charging current: Recommended charging current 10A; max. continuous charging current 100A. Estimated charging time: 10A @ approx. 5 hours.
Cold-Weather Protection
  • Automatic self-heating: When charging in cold conditions, the built-in heating system helps warm the cells for safer winter charging. Minimum charging current required for heating: 10A.
  • Low-temperature charging protection: Charging stops at 0°C / 32°F and resumes at 5°C / 41°F.
  • Typical heating time: Approx. 70–90 minutes from -10°C / 14°F and 100–150 minutes from -20°C / -4°F at 8A heating current.
  • Working temperature range: Charge 0°C to 50°C / 32°F to 122°F; discharge -20°C to 60°C / -4°F to 140°F.
Applications & Expansion
  • Made for trolling motor use: A strong fit for 36V trolling motors, fishing boats, bass boats, small electric boats, and marine accessory power.
  • Cleaner than lead-acid setups: One 36V LiFePO4 battery helps simplify installation compared with using multiple 12V lead-acid batteries in series.
  • Expandable up to 1P2S: Supports series expansion for higher-voltage marine power setups when installed with matching batteries and proper system design.
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36V 50Ah TM Smart

36V 50Ah TM Smart

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10-Year Charger Warranty — Reliable coverage for daily use

30-Day Easy Returns — Simple, stress-free returns

36V 50Ah TM Smart

Simpler 36V Power for High-Thrust Trolling Motors
Replace three 12V batteries with one Group 31 LiFePO4 battery — built with 100A BMS, IP67 marine protection, Bluetooth monitoring, and reinforced internal structure.
Surge Support

Handles short start-up peaks from high-thrust trolling motors.

Bluetooth 5.4

Check battery status before heading back to the ramp.

Self-Heating

Built for cold-weather charging.

Low-Temp Protection

Safer in winter.

100A BMS

More current headroom for high-thrust trolling motors.

36V Trolling Motor Ready

Built for 100–120 lb thrust trolling motor systems.

Alloy Frame Inside

Stronger structure for road vibration.

IP67 Protection

Sealed for wet boat compartments and outdoor use.

Group 31 Marine Fit

Designed for common marine battery spaces.

Bluetooth app

Smarter monitoring, right from your phone.

Real-time data

SOC, voltage, current, and temperature — all in one view.

9 alerts

Key protection alerts help you react faster.

Remote support

Share battery status for quicker troubleshooting.

Series/parallel management

Easier monitoring for expanded battery banks.

Low-battery alert

Know when it’s time to recharge.

Cell monitoring

Track cell voltage for healthier battery performance.

Bluetooth app
Real-time data
9 alerts
Remote support
Series/parallel management
Low-battery alert
Cell monitoring

Industry-Leading Internal Structure

Triple temperature sensing
Real-time thermal monitoring helps protect the cells during charging, discharging, and cold-weather use.
Alloy support frame
Anti-swelling | leak-resistant | vibration-resistant | up to +30% longer cell life
Six-sided epoxy insulation
Full-sided epoxy insulation helps reduce contact risks and improves long-term electrical safety.
Magnetic Emergency Switch
Fiberglass sleeves protect busbars from abrasion and accidental contact under high-current output.
PERFORMANCE & BATTERY LIFE

Long-Lasting 36V Power for High-Thrust Trolling Motors

5,000 +
Cycles @100% DoD
8,000 +
Cycles @70% DoD
15,000 +
Cycles @40% DoD
≤ 2%
Monthly self-discharge
10 Years
Warranty

One 36V 50Ah LiFePO4 battery built for high-thrust trolling motors, fishing boats, and long days on the water — with long cycle life, less maintenance, and a simpler setup than three 12V batteries.

HIGH-OUTPUT PROTECTION

100A Smart BMS. Built for High-Thrust Trolling Motors.

The 100A smart BMS gives your 36V trolling motor system more current headroom while monitoring battery status in real time. It helps protect against overcharge, over-discharge, overcurrent, short circuit, and extreme temperatures — keeping your marine power system safer, steadier, and ready for long days on the water.

Cold-Weather Ready for Fishing Season

The smart BMS pauses charging at 32°F / 0°C and resumes at 41°F / 5°C to help protect the cells. Discharge protection works down to -4°F / -20°C, making it ready for cold mornings, boat storage, and outdoor marine use.

32°F
Charge cut-off
41°F
Charge resumes
-4°F
Discharge cut-off
14°F
Discharge resumes

When charging below 41°F / 5°C, the built-in heater starts automatically and warms the cells to 50°F / 10°C — helping make cold-weather charging safer before your next day on the water.

≤41°F
Auto-heating starts
50°F
Heating stops

2× the capacity, half the weight

Double the capacity, half the weight, and up to 12× the service life — with lifetime energy cost as low as $0.03/kWh.

2× Capacity
Up to 2× more usable energy
1/2 Weight
Up to 50% lighter
12× Lifetime value
Up to 12× longer service life
$0.03 Energy cost
As low as $0.03/kWh over its lifetime

Surge Support for High-Thrust Trolling Motors

Built to help 36V trolling motors handle short start-up peaks, sudden thrust changes, and pulsed marine loads with steadier power on the water.

350 A/ 1s
Peak surge output
250 A / 3s
Heavy start-up support
200 A / 5s
High-draw appliance support
150 A / 10s
Stable short-term output
SAFETY & COMPLIANCE

ECE R10 Compliant for 36V Trolling Motor Power

EMC-tested to ECE R10 for reliable use in mobile electrical systems. Built with smart BMS protection, reinforced internal structure, and trusted compliance for high-thrust trolling motors, fishing boats, and marine power systems.

Specifications & box contents

Basic Battery Specifications
Cell type

LiFePO4

Nominal voltage

38.4V

Rated capacity

50Ah

Energy

1920Wh

Cycle life

≥4000 cycles

Internal resistance

≤40mΩ

Battery management system bms

100A

Number of cells

12

Charging Specifications
Charge method

CC/CV

Charge voltage

43.8V

Recommended charge current

10A

Max continuous charge current

100A

Charging time at recommended current

10A @ 5h

Minimum charge current for heating function

10A

Discharging Specifications
Max continuous discharge current

100A

Max continuous output power

3840W

Discharge cut off voltage

32.4V

Surge discharge current

350A @ 1s

250A @ 3s

200A @ 5s

150A @ 10s

Self discharge rate

≤2%

Temperature Specifications
Charge temperature range

0°C to 50°C / 32°F to 122°F

Discharge temperature range

-20°C to 60°C / -4°F to 140°F

Storage temperature range less than 1 year

-20°C to 25°C / -4°F to 77°F

Storage temperature range less than 3 months

-20°C to 40°C / -4°F to 104°F

Storage temperature range less than 7 days

-20°C to 65°C / -4°F to 149°F

Low Temperature Protection & Heating Function
Low temperature charging protection

Yes

Stop charging temperature

0°C / 32°F

Resume charging temperature

5°C / 41°F

Heating temperature

>10°C / >50°F

Approx heating time 8a from 10 c 14 f

70–90 minutes

Approx heating time 8a from 20 c 4 f

100–150 minutes

Physical Specifications
Dimension

339 × 185 × 215 mm

13.34 × 7.28 × 8.46 inch

Battery weight

15.9 kg / 35.05 lbs

Cell weight

11.5 kg / 25.3 lbs

Housing material

ABS

Color

Black

Protection class

IP67

Connection & Installation
Terminals

M8 × 14mm

Recommended terminal torque

12N·m

Expansion Capability
Series and parallel connection

1P2S

What’s in the box

  • LiThink 36V 50Ah battery

  • User manual

  • Bluetooth app card / warranty card

  • Quick start guide

  • 2× LiThink stickers

  • 2× M8 screws & 2× positive/negative terminal caps

Four ways to charge, one versatile battery

Whether you charge with a wall charger, on the road, through solar, or from a generator, your LiThink LiFePO₄ battery stays ready wherever you are.

Charger

Driving

Solar

Generator

FAQs

Still have questions?
Find more information in our FAQ.

Q: What applications is this 36V 50Ah TM battery best suited for?

A: This battery is built for 36V trolling motors, high-thrust fishing boat setups, bass boats, bow-mount trolling motors, and marine power systems. It is a strong option for anglers who want a simpler, lighter lithium setup for long days on the water.

Q: Can this battery replace three 12V batteries in a 36V trolling motor system?

A: Yes. This 36V LiFePO4 battery is designed to replace a traditional 3 × 12V battery setup, helping reduce wiring complexity, save space, and lower overall battery weight compared with multiple lead-acid batteries.

Q: Is it suitable for high-thrust 36V trolling motors?

A: Yes, it is designed for 36V high-thrust trolling motor systems. The 100A smart BMS provides strong current support for demanding trolling motor use, but you should always confirm your motor’s voltage, current, and battery requirements before installation.

Q: What does the 100A smart BMS do?

A: The 100A smart BMS helps support high-current 36V trolling motor loads while protecting the battery from overcharge, over-discharge, overcurrent, short circuit, and extreme temperatures. It also helps keep the battery running safer and steadier during long fishing trips.

Q: Does this battery support surge output?

A: Yes. The battery is designed to handle short start-up peaks and pulsed marine loads from 36V trolling motors. This gives your trolling motor system extra current headroom during start-up, acceleration, and changing water conditions.

Customers praised this 36V 50Ah LiFePO4 trolling motor battery for "reduced weight" and "consistent runtime." Many replaced three 12V lead-acid batteries, saving over 140 lbs. The Bluetooth app, self-heating, and IP67 rating were highlights. Some delivery issues noted, but battery performance remained strong across 4-12 hour trips.

  • The bow sits slightly higher and the boat comes onto plane more easily.
  • My boat's draft is noticeably shallower and hole shot improved.
  • The battery is lighter, cleaner to install, and much easier to manage.
Charger (positive)Charging (positive)Motor (positive)App (positive)Capacity (positive)
  • 5 stars: 56 (76%)
  • 4 stars: 13 (18%)
  • 3 stars: 1 (1%)
  • 2 stars: 2 (3%)
  • 1 star: 2 (3%)
B
B.C.

I installed a small charging area in my boat shed so I can leave the battery secured and recharge it between fishing trips. The battery feels solid, the terminals are sturdy, and the compact size made it easy to place on the shelf without taking up too much room.

After my last trip, the Bluetooth app showed about 46% remaining. Using a 43.8V 10A LiFePO4 charger, it took roughly three hours to reach full charge. I like being able to check the SOC, voltage, current, and temperature from my phone without disconnecting anything or using a separate meter.

The lighter weight also makes it much easier to move between the shed and the boat when needed.

B.C. review photo
W
W.L.

I installed this battery on my bass boat to run a 36V trolling motor and have now used it on several fishing trips. On my most recent outing, I was on the water for a little over five hours, mostly using low to medium speed for shoreline fishing, along with frequent position corrections when the wind picked up. The Bluetooth app showed the current usually between about 4A and 12A, with higher short bursts when turning the boat or moving between spots.

I started the day at 100% and returned with approximately 57% remaining. The voltage stayed stable throughout the trip, and I did not experience any sudden cutoffs, alarms, or noticeable loss of trolling power. Being able to check the SOC and current from my phone is especially useful because I no longer have to guess how much capacity is left.

The battery is also much easier to lift and install than the three lead-acid batteries I previously used for the same 36V system. It feels solid, the terminals are sturdy, and it has remained secure despite normal vibration and movement on the boat. Recharging from around 57% to full with my 43.8V 10A charger took a little over two hours.

This has been a practical and dependable upgrade. It provides enough capacity for the way I fish, saves a considerable amount of weight, and keeps the battery setup much simpler.

W.L. review photo
F
F.M.

I just finished installing both batteries in my boat, and everything went smoothly. They fit well in the battery compartment, the terminals feel sturdy, and the existing straps hold them securely in place. The batteries are noticeably easier to handle than my previous lead-acid setup, which made the installation much less difficult. The wiring is now connected and the Bluetooth app recognized the batteries without any problems. I have not completed a full day on the water yet, but the build quality and initial setup have made a very good impression.

F.M. review photo
C
C.

The battery arrived well packed and in perfect condition. It feels solid and well made, but it is still much easier to handle than my old lead-acid batteries. The case, terminals, and carrying strap all look sturdy. I have not tested it on the water yet, but the quality looks very promising so far.

C. review photo
L
L.T.

I purchased two of these batteries for my boat, and my first impression was very positive. Shipping was faster than expected, and both boxes arrived without any visible damage. I had a question about the correct charging voltage before installation, and customer service replied to my email quickly and confirmed that I should use a 43.8V CC/CV LiFePO4 charger. The response was clear and helpful.

As shown in the photo, the battery compartment on my boat is fairly tight, but the batteries fit securely without requiring major modifications. At around 35 lbs each, they were much easier to lift and position than the previous lead-acid setup. The cases feel solid, the terminals are well made, and everything remained firmly in place after securing the batteries with the existing straps. They have also handled normal vibration and movement on the water without any loose connections.

I tested one battery with my 36V trolling motor during a little over four hours of fishing. Most of the trip involved low- to medium-speed trolling, holding position, and making short higher-power corrections when the wind picked up. According to the Bluetooth app, the current was generally around 4–12A during normal use, with brief increases into the low 20A range. The SOC went from 100% to approximately 63% by the end of the trip. Voltage remained stable, and I did not experience any unexpected shutdowns or BMS protection events.

The Bluetooth monitoring is one of the most useful features for me. I can check the remaining charge, voltage, current, temperature, and any warnings without opening the battery compartment. The connection remained stable while I was standing on the deck above the compartment. After the trip, charging from around 63% back to full with a 10A charger took a little over two hours, which was close to what I expected.

So far, the batteries appear well built and suitable for a marine environment. The lighter weight, stable trolling motor performance, and ability to monitor the system through the app make them a noticeable improvement over my old batteries. Based on the shipping experience, customer support, installation, and first several trips on the water, I am very satisfied with the purchase.

L.T. review photo
S
S.L.

I use this with a 36V trolling motor, and the biggest benefit is simplicity. One battery is easier to wire, charge, and monitor than multiple 12V batteries. The app shows useful details like voltage, current, temperature, and remaining capacity.

S.L. review photo
R
R.

Scan the QR code on the battery, app opens, done. No holding buttons or resetting things. Now whenever I'm within 20 feet of my kayak, the app automatically updates. I can check my battery level from my truck before even unloading. The connection stays solid, never drops.

R. review photo
K
K.R.

Ordered on a Tuesday, arrived Thursday. Packaging was impressive, foam on all six sides. The battery was wrapped in a thick plastic bag too, probably for moisture protection. Came with a paper manual that actually had useful wiring diagrams, not just generic safety warnings. No damage, no dents. Plugged it in and it worked immediately.

K.R. review photo
H
H.

After switching to lithium, the bow sits slightly higher and the boat comes onto plane more easily. I bought the battery mainly for the trolling motor, but the weight reduction has improved the overall feel of the boat too.

C
C.

I have used this battery in both warm summer weather and cool spring mornings. The app temperature reading has been useful because the battery compartment is more exposed than I originally realized.

A
A.

The battery sat in storage for nearly a month between trips and lost very little charge. I checked it through the app before loading the boat and did not need to top it up.

A
A.

The biggest improvement for me is the reduced maintenance. The whole installation feels less complicated.

C
C.

The battery arrived and works as expected, but the outer carton had visible dents from transport.

E
E.

No problem with the battery so far, but the courier left the parcel at the wrong entrance of the building. I had to ask around before finding it.

H
H.S.

I came back from my longest trip with roughly one-quarter remaining. Charging at 10A took a little under four hours. That was close to what I expected based on the amount used, and the charge percentage increased steadily without jumping around.

O
O.B.

After about two months of weekend fishing, the capacity feels consistent. I normally charge after every second short trip instead of after every outing. The main improvement for me is not just runtime—it is having fewer connections that can loosen or corrode.

F
F.M.

I run a 36V trolling motor on an 18-foot aluminum fishing boat. At low settings, power consumption is quite modest, but it rises quickly when moving between spots. The battery gives me enough reserve that I no longer avoid using higher power when I actually need it.

J
J.F.

The battery arrived with no damage and the terminals were protected well. I had ordered a charger separately and wanted to make sure the voltage was correct. Support confirmed the 43.8V setting through email, and the system has charged normally since then.

b
b.

I store the boat in an unheated building. During a cold morning, the charger stayed connected but the cells did not begin charging immediately. The heating function came on first, and normal charging started later. It was useful being able to follow the temperature in the app rather than wondering whether something was wrong.

A
A.G.

We had a rough day with constant crosswind, so the trolling motor was working almost continuously. After around three and a half hours, the remaining capacity was in the low 40% range. No interruptions, no warning messages, and no obvious drop in thrust.

R
R.T.

I have the battery mounted under the rear deck, and the Bluetooth signal reaches the front casting platform without a problem. What surprised me most was seeing how much the current changes when the motor is fighting wind compared with cruising in calm water.

E
E.V.

The battery itself is heavier than a small 12V lithium battery, but still much easier to handle than the three AGMs it replaced. Installation took about an hour because I removed several old jumper cables and rearranged the charger leads. The result is much cleaner.

L
L.H.

Took it out for the first time on a fairly calm lake. We fished for just over four hours, moving slowly along weed lines and using spot lock quite a bit. I did not keep checking the percentage all day, but there was still a little over half left when we loaded the boat.

S
S.M.

I wanted to get rid of the three-battery setup in my bass boat, mainly because of the weight and all the extra cables. This single 36V battery cleaned up the compartment nicely and made the stern noticeably lighter. I have used it on five trips now and the trolling motor has stayed strong from launch to return.

J
J.R.

After one longer trip, I returned with just under 30% remaining. Using a 43.8V 10A charger, it took a little over three and a half hours to get back to full. The app made it easy to confirm when charging had actually finished.

I
I.C.

The battery compartment occasionally gets wet when water comes over the rear deck, so the IP67 rating mattered to me. I still keep the battery properly secured and protected, but it is good to know the case is designed for this kind of environment.