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WattCycle 12V 100Ah TM Bluetooth LiFePO4 Battery with 120A BMS surge protection for 30-70lbs Trolling Motors
- Born for Trolling Motors: Ideal for 30–70 lbs trolling motors, also suitable for RVs, marine, bass boats, kayaks, pumps, home storage, off-grid setups, and camping.
- Lite for Use: Group 24 size (10.2 × 6.6 × 8.2 in) & lightweight (24.47 lbs) for easy handling.
- Longer Range: 1280Wh capacity supports multiple fishing days, delivering up to 1536W power output.
- Grade-A Cells: 5,000+ cycles @100% DOD, ensuring up to 13 years of use (1 deep cycle/day).
- 120A Smart BMS: 20+ protections including overcharge, over-discharge, overcurrent, overheating, and short circuits; supports 120A continuous and 200A peak current (6s).
- Auto Recovery Function: Automatically reactivates from over-discharge protection without user intervention.
- WattCycle App Control: Monitor SOC and control via app (Android 4.3+/iOS, Bluetooth 5.0, GPS required).
- Your On-Water Insurance Policy: If your cranking battery runs dry, the 200A peak discharge allows you to jump-start most small-to-mid-sized outboards, ensuring you're never left stranded far from the ramp.
- Easy Replacement: 1/3 the size & weight of lead-acid, with 2× energy and 10× longer lifespan.
- Durable & Safe Design: IP67 rated for water, dust, and salt spray resistance; vibration-proof for long-term outdoor use.
- Low-Temp Protection: Auto discharge off < -4℉; charge off < 0℃ / 32℉; resumes charging > 5℃ / 41℉.
- Flexible Charging: Max. 1C fast charging via LFP charger, generator, or solar panel.
- Expandable System: Max. 4S4P configuration for up to 20.48 kWh of energy.
- Certified: SDS / UN38.3 / FCC / CE / ROHS / UL compliant for safety and reliability.
- Unmatched Service: Fast delivery, exclusive 5+2 years warranty, lifetime technical support, and protective packaging.
We offer free shipping within the continental U.S. via UPS Ground or FedEx, with orders typically processed in 1–2 business days and delivered within 2–5 business days. Large products such as 12V 628Ah, 48V 314Ah batteries, or 12kW inverters are shipped by truck (LTL) and require signature upon delivery. After order confirmation, we will contact you by email to confirm shipment, and transportation arrangements typically take about 48 hours. Please note that we do not ship to Alaska, Hawaii, Puerto Rico, or PO Box addresses. Delivery times may vary due to external factors such as carrier delays or weather conditions.
For complete details, please visit:
Shipping Policy.
Our batteries come with a 5-year warranty, which can be extended to 7 years total upon product registration. Accessories are covered by a 1-year warranty, and like-new (refurbished) batteries include a 1-year warranty.
For full terms, conditions, and claim details, please visit:
Perfect for All Your Trolling Motor Needs
Premium Deep Cycle Design
This premium marine deep cycle battery is designed for fishing boats, electric kayaks, and leisure vessels, ensuring a consistent energy supply in every adventure. Its robust design meets the rigorous demands of the marine environment, making it perfect for both casual outings and professional use.
Unmatched Marine Performance
Experience unmatched marine performance with WattCycle's 12V 100Ah Trolling Motor LiFePO4 deep cycle battery, engineered for superior power and reliability. It consistently delivers robust energy to keep your marine adventures smooth and uninterrupted.
Smart Connectivity
The integrated smart real-time status monitor and Bluetooth 5.0 connectivity allow effortless control and monitoring directly from your smartphone. Enjoy immediate access to vital battery metrics that enhance your overall marine experience. With built-in GPS and seamless compatibility with Android and iOS, you stay informed and connected at all times. The intuitive mobile interface makes it simple to track performance and optimize battery usage on the go.
120A Continuous Output for Optimal Performance
The WattCycle 12V 100Ah LiFePO4 trolling motor Battery features an advanced 120A Battery Management System (BMS), enabling a continuous 120A output to deliver exceptional performance for trolling motors and other high-power devices.
Automatic Recovery for Enhanced Safety and Convenience
With built-in protection against overcurrent, over-discharge, and overheating, the battery automatically resumes normal operation without needing to disconnect the load. Once the temperature stabilizes, the system ensures a seamless recovery, keeping your devices running smoothly and safely.
Advanced 8-Protection Safety System
Engineered for comprehensive safety, our battery features 8 critical protection functions designed to shield against a wide range of risks. In addition to low-temperature cutoff, its smart BMS safeguards against overcharge, over-discharge, over-current, short-circuits, overheating, reverse polarity, and overload conditions, ensuring optimal performance in every environment.
How Long Will a 12V 100Ah Trolling Motor Battery Run?
Runtime depends on motor thrust level, speed setting, and boat load. A 12V 100Ah LiFePO4 battery provides about 1280Wh of energy, which can power most fishing boats for several hours depending on motor current draw.
| Thrust | Typical Current Draw | Estimated Runtime |
|---|---|---|
| 30 lb | 25–30 A | 3.3–4.0 hours |
| 40 lb | 35–45 A | 2.2–2.8 hours |
| 55 lb | 40–50 A | 2.0–2.5 hours |
| 70 lb | 50–60 A | 1.8–2.3 hours |
| Note: Runtime estimates assume moderate boat load and optimal battery condition. | ||
WattCycle 12V 100Ah LiFePO4 Trolling Motor Battery
WattCycle is honored to be the official gold sponsor of American Bass Anglers (ABA), marking three consecutive years of successful partnership.
This collaboration underscores our commitment to supporting America's premier bass fishing community with innovative marine energy solutions.
How to Choose the Version
| Version |  |
 |
| Size | 10.2 x 6.6 x 8.2 inch | 13.94 × 6.93 × 7.36 inches |
| Weight | 23.15 lbs | 24.25 lbs |
| Nominal Voltage | 12.8V | 12.8V |
| Energy | 1280Wh | 1280Wh |
| BMS | 12.8V 120A | 12.8V 200A |
| Waterproof | IP67 | IP67 |
| Bluetooth | Yes | Yes |
| Battery Type | Deep cycle lithium battery | Dual purpose marine cranking battery |
| Application | ● long, steady energy output ● repeated deep discharges ● powering trolling motor and boat device | ● high cranking current ● starting battery design ● engine ignition support |
Trolling Motor Battery vs Outboard Motor Battery
This 12V 100Ah TM LiFePO4 battery is designed specifically for trolling motors and deep cycle marine loads such as fish finders, lights, and onboard electronics. These motors run continuously for hours while you maneuver quietly through fishing areas.
It is not intended for continuous propulsion use on outboard motors, which typically require batteries engineered for sustained high-current discharge and propulsion systems.
Key Differences
| Feature | Trolling Motor Battery | Outboard Motor Battery |
|---|---|---|
| Power Delivery | Continuous deep cycle power | Short high-current burst |
| Typical Use | Electric trolling motors | Starting gasoline outboards |
| Discharge Pattern | Long steady runtime | Instant engine start |
| Battery Type | Deep cycle lithium battery | Marine starting battery |
If you are specifically looking for a lithium battery for an outboard motor, we recommend using WattCycle 1200CCA dual purpose marine cranking battery designed for marine boat starting applications.
Tech Specs
GENERAL
| Dimensions (Inches) | 10.2 (L) x 6.6 (W) x 8.2 (H) |
| Weight | 23.15lbs / 10.5kg |
| Waterproof Rating | IP67 |
| Warranty | 7 years |
| Housing Material | ABS (Flame Retardant Plastic) |
| Terminal | M8 bolts |
BATTERY
| Cell | EV Grade A+ LiFePO4 Cells |
| Nominal Voltage | 12.8V |
| Nominal/Usable Capability | 100Ah |
| Energy | 1280Wh |
| Cycle Life | 5,000+ cycles @100% DOD, 6,000+ cycles @80% DOD, 15,000+ cycles @60% DOD |
| Max Depth of Discharge (DOD) | 100% |
| Max. Expansion | 4S4P |
| Internal Resistance | ≤40mΩ |
BMS
| BMS | 120A |
| Max. Continuous Output Power | 1536W |
| Max. Continuous Charge Current | 120A |
| Max. Continuous Discharge Current | 120A |
| Max. Discharge Current | 220A (≤6s) |
| Peak Discharge Current | 400A (≤0.3s) |
| Primary Current Protection | 220A |
| Secondary Current Protection | 400A |
CHARGE
| Charge Voltage | 14.6V ± 0.2V |
| Charge Method | CC/CV |
| Recommend Charge Current | 20A (0.2C) |
| Charge Temperature | 0℃ to 65℃ / 32℉ to 149℉ |
| Discharge Temperature： | -20℃ to 55℃ / -4℉ to 131℉ |
| Storage Temperature | 0℃ to 55℃ / 32℉ to 131℉ |
| Low-Temperature Protection | Yes (32℉/0℃) |
| Low-Temperature Charging Protection Auto Recovery | Yes (±41℉/5℃) |
Installation Tips for Trolling Motor Batteries
Frequently Asked Questions
Yes. Two identical 12V LiFePO4 batteries can be connected in series to create a 24V battery system.
The WattCycle 12V 100Ah LiFePO4 Trolling Motor Battery is optimized for trolling motor applications. For electric outboard applications, we recommend using the WattCycle Marine Cranking Battery, which is specifically designed to handle the higher power demands and provide optimal performance and safety.
With integrated Bluetooth 5.0 connectivity and real-time status monitoring, you can easily track voltage, charge levels, and overall health via our dedicated mobile app. Please reading WattCycle detailed Bluetooth Guide.
We recommend charging the battery fully with a compatible LiFePO4 charger before its initial use and maintaining a 30%–50% charge for long-term storage to ensure optimal performance.
Yes. The battery features an IP67 waterproof rating and rugged construction designed for harsh marine environments.
Our advanced BMS continuously monitors the current flow and instantly disconnects power if it detects an overload, ensuring that neither the battery nor your devices are exposed to harmful currents.This proactive overcurrent protection automatically resets once safe conditions resume, maintaining optimal performance and extending the battery’s lifespan.
In most trolling motor applications LiFePO4 lithium batteries offer clear advantages over lead acid. They are lighter, deliver a higher usable energy percentage, charge faster, and provide a much longer cycle life with less maintenance. The trade offs are higher upfront cost and the need to use LiFePO4 compatible chargers or charging profiles.
Yes, a 12.8V 100Ah LiFePO4 battery can run a 55lb trolling motor, provided the battery and wiring can handle the motor's continuous current draw. Example calculation: 12.8V × 100Ah = 1,280 Wh. A 55lb motor drawing about 40 A uses roughly 12V × 40A = 480 W, so estimated runtime = 1,280 Wh ÷ 480 W ≈ 2.8 hours. Real runtime depends on propeller, boat load, speed setting, and environmental conditions.
"Marine battery" is a broad term that can include starting batteries, deep cycle batteries, and dual purpose batteries used in boats. A "trolling battery" specifically refers to a deep cycle battery built to supply steady current for electric trolling motors over long durations. Key differences include design for cranking versus deep-cycle discharge, plate construction and thermal management, and typical use cases such as starting a gasoline outboard or powering electronics and electric propulsion.
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