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Wattcycle 12V 100Ah Group 31 Pro LiFePO4 Battery with 110A BMS
- Upgraded 110A BMS Protection: Max 110A continuous discharge | full protection from overcharge, over-discharge, overcurrent, short circuit & overheating.
- Lead-Acid Replacement: Same size, 2/3 lighter, 2× usable energy & 10× lifespan compared to old Group 31 batteries.
- High Energy Output: 1280Wh capacity | 1408W max output for longer runtime & higher power appliances.
- Premium EV Grade A+ Cells: 5000–15000 cycles DOD | 10+ years lifespan for superior reliability.
- Best Value: Only $0.16 per Wh on average | maintenance-free | saves ~$65.4/year (1 cycle/day).
- Low-Temperature Cut-Off: Auto discharging cut-off < -4℉ | charging cut-off < 32°F | resumes > 41°F.
- Versatile Applications: Ideal fit for large RVs, vans, campers, trolling motors, bass boats, marine, home storage, mowers, off-grid systems & golf carts.
- Reinforced Design: IP65 waterproof rating | built-in metal frame for internal stability & vibration resistance.
- DIY Power Expansion: Supports up to 4S4P configuration — build a 20.48 kWh power station.
- Fast & Flexible Charging: Up to 1C rate | compatible with LFP charger, generator, and solar panel.
- Reliable Service: Fast shipping & delivery | 5+2 years warranty | professional tech support | safe packaging.
- Certified Quality: IEC / ROHS / CE / FCC / UN38.3 / Class 9.
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
12V 100Ah Pro Lithium Battery Tech Specs
GENERAL
| Dimensions (Inches) | 13.0 (L) x 6.9 (W) x 8.7 (H) |
| Weight | 23.0lbs |
| Waterproof Rating | IP65 |
| Warranty | 7 years |
| Housing Material | ABS (Flame Retardant Plastic) |
| Terminal | M8 bolts |
12V 100AH Pro 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 |
Battery BMS
| BMS | 110A |
| Max. Continuous Output Power | 1408W |
| Max. Continuous Charge Current | 110A |
| Max. Continuous Discharge Current | 110A |
| Max. Discharge Current | 300±50A (≤5s) |
12V 100AH Pro Lithium Battery Charge Specs
| Charge Voltage | 14.6V ± 0.2V |
| Charge Method | CC / CV |
| Recommend Charge Current | 20A (0.2C) |
| Charge Temperature | 0℃ to 50℃ / 32℉ to 122℉ |
| Discharge Temperature: | -20℃ to 70℃ / -4℉ to 158℉ |
| Storage Temperature | -10℃ to 50℃ / 14℉ to 122℉ |
| Low-Temperature Protection | Yes (32℉/0℃) |
| Low-Temperature Charging Protection Auto Recovery | Yes (41℉/5℃) |
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.

