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WattCycle 12V 100Ah 1200CCA Dual Purpose Marine Cranking Battery with Bluetooth and Self-heating
- Dimensions: 13.94 × 6.93 × 7.36 inches | 24.25 lbs.
- 1200 CCA: Ideal for starting engines, heavy machinery, and outboard motors.
- Deep Cycle Dual Purpose: Suitable for car audio, trolling motors, electronics, golf carts, ATVs, UTVs, and RVs.
- Self-Heating Function: Auto heating at ≤ 0°C / 32°F, stops heating at 5°C / 41°F — built for extreme environments.
- Forced Start Button: Enables emergency power-up when the battery fails to self-start.
- Bluetooth Upgrade: Real-time monitoring via WattCycle App (Android & iOS supported).
- ABYC Certified: Exceeds ABYC lithium safety standards for marine-grade reliability.
- 200A Smart BMS: Supports 200A continuous discharge, 2560W max power output, and full BMS protections.
- IP67 Rated: Water-resistant and rugged for both land and marine use.
- 5000+ Deep Cycles: LiFePO4 cells with greener chemistry, higher energy density, and longer lifespan.
- Better Than Lead-Acid: No sulfation, 1/3 the weight, stronger cranking power, and 2× usable capacity.
- Fast & Flexible Charging: 1C rate compatible with LFP chargers, solar panels, generators, and alternators.
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.
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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:
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Fast, Free Shipping
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30-Day Money-Back Guarantee
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Hassle-Free Warranty
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Lifetime Customer Support
FINALLY a Marine Lithium Battery That Does it All
In this video I showcase to 12V 100AH 1200CCA Dual Purpose Marine Starting and Trolling Battery from Watt Cycle (wow that's a mouthful). Let me know what you think in the comments below!
Complete Feature Integration
WattCycle 12V 100Ah marine starting battery integrates a host of practical features—from Bluetooth 5.0 connectivity and a robust 200A Battery Management System (BMS) to an IP67 waterproof rating, EV Grade A+ cells, self-heating capability, and a forced start button. This comprehensive package makes it a top contender among dual purpose lithium marine batteries, delivering performance and reliability wherever your adventures take you.
Optimized for Cold Weather
Never worry about cold starts again. With an automatic self-heating feature that activates when temperatures drop below 0°C (32°F), this lithium cranking battery warms up until reaching 5°C (41°F), guaranteeing optimal performance. This smart design makes it one of the best starting marine battery options for chilly environments.
Engine Start and Continuous Load Power
Engineered to deliver both the surge for engine starts and sustained power for continuous loads, this marine cranking battery ensures that your boat’s engine and onboard systems receive reliable energy when needed most. It stands out as one of the best starting marine battery solutions available in today’s market.
Bluetooth-Enabled Monitoring
Stay connected with your power source through integrated Bluetooth connectivity. This marine cranking battery lets you monitor charge levels, battery health, and usage details right on your smartphone via the WattCycle app. With smart tracking, managing your lithium cranking battery becomes effortless and efficient.
Powerful Cranking & Deep Cycle
Engineered for strength and endurance, this dual purpose marine battery offers impressive performance—delivering 1200 CCA at 20 seconds and robust 1000 cold cranking amp battery power at 22 seconds. Designed as a lithium marine cranking battery, it sustains over 6,000 deep cycles at 80% depth of discharge, ensuring consistent power for both starting and deep cycle applications. After our extensive experimental testing, Its performance even rivals many models often labeled as a marine cranking battery 1000 CCA.
Outperforming Lead-Acid Alternatives
Experience significant improvements over traditional lead-acid batteries with our marine dual purpose battery. Not only is it lighter and more compact, but it also offers an extended lifespan and reduced maintenance. Whether you need a marine starting battery for your boat or a deep cycle battery for automotive applications, this battery provides superior efficiency and reliability.
Fast Charging and Efficient Energy Management
Time is valuable, and this dual purpose battery is built for rapid energy replenishment. Its fast charging technology minimizes downtime, keeping your system ready for action. As a reliable lithium marine starting battery, it efficiently manages energy, making it an excellent choice for both marine and automotive applications.
Reliable Dual-Mode Power
This 12V 100Ah marine starting battery delivers dependable performance for both watercraft and road vehicles. Designed as a lithium marine starting battery, it provides dual-mode capability that ensures reliable power whether you’re starting an engine or running onboard electronics. Enjoy robust performance and peace of mind on every journey.
How to Choose the Version
| Version | ![]() |
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| 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 | √ | √ |
| Low-tem Protection | √ | √ |
| Function | Dual Protection | Self-heating/1200CCA/Force Start Button |
Deep Cycle & Starting Reliability
Built to deliver consistent power across various applications, this battery excels as a dual purpose marine battery. Whether you require deep cycle endurance for extended use or instant starting power, its design meets both needs. Rely on this lithium marine starting battery to provide versatile performance under any conditions.
Tech Specs
Specifications
| Dimensions | 13.94x6.93x7.36 inch / 354mmx176x187 mm |
| Weight | 24.25lbs /11kg |
| Capacity | 100Ah |
| Energy Storage | 1.28kWh |
| Nominal Voltage | 12.8V |
| Float Voltage | 13.8V |
| Self Discharge Rate | <3%/Month |
Charging
| Max. Charge Voltage | 14.6V |
| Max. Charge Current | 100A |
| Recommend Current | 20A |
| Charge Temperature | 32~131°F/0~55°C |
| Internal Resistance | ≤40mΩ |
Discharging
| Cont. Dischagre Current | 100A |
| Discharge Current | 1200A@20s/1000A@22s/900A@20s/800A@30s |
| Discharge Temp.Range | -4~140°F/-20~60°C |
| Discharge Cut-off Voltage | 10V |
Frequently Asked Questions
A dual purpose marine battery is engineered to deliver both high cranking power for engine starts and a steady deep cycle discharge for powering onboard electronics. Unlike a dedicated deep cycle battery, a dual purpose marine battery or marine dual purpose battery is designed to balance starting capability and energy storage. This means that whether you need the reliable burst of a marine cranking battery or the sustained power of a dual purpose battery, you can depend on its versatile performance. In some cases, advanced versions like a dual purpose lithium marine battery offer even lighter weight and improved efficiency, making them an attractive option for many marine applications.
Compared to lead acid alternatives, our lithium marine starting battery is much lighter and delivers a longer service life with over 6,000 deep cycles. It offers fast charging, lower maintenance, and enhanced efficiency. This lithium cranking battery not only provides powerful 1200 cranking amp battery performance but also maintains consistent energy delivery, positioning it as one of the best starting marine battery options available.
The built-in self-heating function automatically activates when temperatures drop below 0°C (32°F), warming the battery until it reaches 5°C (41°F). This ensures optimal performance in cold weather, making it a dependable lithium cranking battery, especially when cold starts is a concern. Its ability to maintain performance in low temperature reinforces its status as a top marine cranking battery 1200 CCA (cold cranking amps) option.
Engineered to deliver reliable performance in various environments, this battery excels even in harsh conditions. Its self heating feature, robust cold cranking amps (1200 cranking amp battery), and durable construction make it an ideal choice as a marine cranking battery for extreme climates. Whether facing cold weather or high-demand applications, this dual purpose marine battery ensures efficient and dependable power.
Marine starting batteries are primarily designed to provide the high current required to start an engine, not for extended deep cycle use. While some marine batteries are marketed as dual purpose, meaning they incorporate features of both a marine cranking battery and a deep cycle battery, pure marine starting batteries typically excel in short, high power bursts. Our 12V 100Ah marine starting battery is a dual purpose marine battery, Therefore, if you require both reliable starting power and deep cycle capability, consider opting for WattCycle 12V 100Ah dual purpose marine battery that offers a balanced performance.
A marine starting battery is optimized for rapid, high current delivery to crank engines, which differs from the sustained, lower-current draw needed by trolling motors. Although a standard marine starting battery may power a trolling motor briefly, it is not the ideal choice for prolonged deep cycle use. For users who require both engine starting power and consistent energy for trolling motor operation, a dual purpose lithium marine battery such as Our 12V 100Ah marine starting battery—might be the better solution, ensuring you get the best starting performance along with reliable power over time. because WattCycle 12V 100Ah marine starting battery is a dual purpose marine battery.
While a marine starting battery is engineered for the specific demands of marine environments, many of its features, such as high cranking amps, can make it compatible with car engines. However, it’s important to verify that the battery’s specifications match your vehicle’s requirements. For instance, a marine cranking battery with ratings such as a 900 cranking amp battery or even a marine cranking battery 1000 CCA might work effectively, but it may not always provide the deep cycle performance expected in car audio or accessory systems. Always consult your vehicle’s manual and a professional before substituting a marine battery for an automotive one.Q8: Will a fish finder drain a dual purpose marine battery?Fish finders typically consume very little power compared to other onboard systems, so they are unlikely to significantly drain a dual purpose marine battery. Whether you’re using a traditional marine starting battery or a dual purpose lithium marine battery, the energy draw from a fish finder is minimal. However, if you have multiple electronic devices running simultaneously for extended periods, it is wise to monitor the battery charge and recharge as needed to maintain optimal performance for both starting and deep cycle applications.


