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

Group 31

Size

Alloy

Internal Frame

Low-Temp

Cut-Off

5.0

Bluetooth

30+

Protections

Self

Heating

Why it stands out

Group 31

Size

Alloy

Internal Frame

Low-Temp

Cut-Off

5.0

Bluetooth

30+

Protections

Self

Heating

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

Sale price $349.99Regular price $549.99 34999:54999 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.
Choose Your Option
Choose Your Option: 1× Battery
Pay conveniently
image/svg+xml Created with Sketch.
Reliable delivery

Free U.S. Shipping — Fast delivery from our U.S. warehouse

Engineer-Level Support — Real help when you need it

10-Year Charger Warranty — Reliable coverage for daily use

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

36V 50Ah TM

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 5.0

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 12V 334Ah battery

  • User manual (DE/EN)

  • Bluetooth app card / warranty card (DE/EN)

  • Quick start guide (DE/EN)

  • 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.