WattCycle 12V 100Ah Dual Purpose Marine Battery with Bluetooth and Self-heating
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Local Poland/Germany warehouses, more details in Shipping Policy.

Please see our Warranty Policy for more details.
Please feel free to contact us via Email (support.eu@wattcycle.com) or WhatsApp(+86 153 6140 9198).
WattCycle 12V 100Ah Dual Purpose Marine Battery with Bluetooth and Self-heating
This policy applies to product returns, refunds, and order processing for items purchased through official WattCycle channels and authorized distributors.
Table of Contents
- I. Order Cancellation
- II. Receiving Exception Handling
- III. Return Policy
- IV. Refund Policy
- After-Sales Policy Summary
- VI. Return Procedure
- VII. Special Notes
I. Order Cancellation
Order Status | Processing Method |
Not Shipped | Cancellation request can be submitted for a full refund. |
Shipped | Shipped orders cannot be intercepted or cancelled. Customers may apply for a return and refund after receiving the package in accordance with the return policy, or refuse the package upon delivery. |
II. Receiving Exception Handling
If you discover any of the following issues upon delivery, please contact customer service within 48 hours and provide the required documentation:
Exception Type | Required Documentation |
Product Damaged | Clear photos/videos (showing damage to outer packaging and product) |
Wrong Product Shipped | Photos (showing received product and label) |
Missing Items | Photos (showing all received items) |
Product Not Delivered/Lost | / |
III. Return Policy
1. 30-Day Returns
Within 30 days of receiving your product, if you are unsatisfied and the product meets the following conditions, you may apply for a return:
Return Conditions:
- Product is unused and uninstalled
- Product remains in original condition, no scratches or damage
- All original accessories, manuals, and packaging materials are included
- Valid proof of purchase must be provided
Fee Information:
- Return shipping costs are borne by the customer.
- The refund amount will be your actual purchase price.
2. Returns Beyond 30 Days (Non-Quality Issues)
For returns due to personal reasons beyond 30 days of purchase, depreciation fees will be deducted based on the purchase duration, and restocking fees will apply.
3. Quality-Related Returns
For quality-related returns, please refer to the WattCycle Warranty Policy. Products confirmed to have quality issues within the warranty period are eligible for free replacement or refund.
4. It is recommended to retain the original packaging intact for at least 30 days.
5. Before shipping your return, please take photos of the package, shipping label, and recorded weight. Keeping these records may help avoid potential disputes if any issues occur during transit. Thank you for your cooperation and support.
IV. Refund Policy
1. Refund Process
- After the return request is confirmed by customer service, the product must be shipped back to the designated warehouse.
- Refunds will be processed within 3-5 business days after we receive and inspect the returned product. (If you see that the product has been delivered back to the warehouse, please contact us proactively to initiate the refund.)
2. Refund Method
- Refunds will be issued via the original payment method (PayPal or credit card).
- The refund amount will be calculated after final verification, deducting any applicable fees, and returned through the original payment channel.
3. Refund Inquiry
If you have not received your refund within 7 business days after it has been processed, please follow these steps to check:
- Check your bank account or payment account
- Contact your issuing bank or payment platform (refunds may experience processing delays)
- Contact WattCycle customer service for assistance
After-Sales Policy Summary
Scenario | Resolution | Shipping Responsibility | Notes |
Quality issue (within 6 months) | Free replacement/refund | WattCycle covers shipping costs | Requires quality defect confirmation, valid proof of purchase, and within the warranty period |
Quality issue (after 6 months, within warranty) | Free replacement | WattCycle covers shipping costs | Requires quality defect confirmation, valid proof of purchase, and within the warranty period |
Personal reason (return within 30 days) | Return for refund | Customer bears return shipping | Packaging intact, product in good condition. Warehouse restocking fees will be charged. |
Personal reason (return after 30 days) | Return for refund | Customer bears two-way shipping | Warehouse restocking fees and depreciation fees will be charged. |
Wrong item shipped / Missing item / Transit damage | Free replacement | WattCycle covers shipping costs | / |
Order cancellation (before shipment) | Refund | No shipping charges incurred | / |
Beyond 6 months (non-quality issues) | Returns not accepted | / | / |
VI. Return Procedure
- Contact Customer Service: Reach out via service@wattcycle.com, explain the reason for return, and provide your order number.
- Obtain Authorization: After confirming eligibility for return, customer service will provide a Return Label and return address.
- Pack and Ship: Securely pack the product using the original packaging to ensure safe transit.
- Ship and Track: Send the product back following customer service instructions and retain the tracking number.
- Refund Processing: Once the warehouse receives and inspects the returned item, the refund will be processed.
VII. Special Notes
- We reserve the right to refuse returns for products that have been used, installed, or have incomplete packaging.
- Packages returned directly without confirmation and a Return Label from customer service will not be processed.
- Customized products or those with activated extended warranties may be subject to special return conditions. Please consult customer service.
- This policy applies only to the original consumer and does not apply to secondary resale.
Contact Information:
📧 Official Customer Service Email: support.eu@wattcycle.com
🌐 Official Website: www.eu.wattcycle.com
Trustworthy Dual Purpose Marine Battery
WattCycle 12V 100Ah dual purpose marine battery can not only start the marine outboard motor but also provide sufficient energy to power the electrical appliances in the motorhome. Whether you are fishing on the water or enjoying the scenery during your camping journey, it's always a reliable energy source.
Note: For use in the motorhome, it can only provide energy as an energy-storing battery. Please do not use it to start the vehicles.
If you have to use it to start the vehicle, please note:
1. The vehicle's engine output voltage needs to be below 14,2V.
2. The location where the battery is placed needs to meet the battery's operating temperature (0℃ - 60℃).
Smart Upgrade, Redefine Marine Experience
WattCycle 12V 100Ah Dual Purpose Marine battery is made of high-quality EV Grade A+ cells, which ensure up to 15000 cycles @ 60% DoD. IP67 waterproof allows you to use the battery for a long time in a marine environment without the damage to the battery.
Compared to other batteries equipped with 100 BMS, the 200A BMS of the 12V 100Ah dual purpose battery makes the Max. continuous discharge current of the battery 200A, meeting your higher power needs.
Marine Battery's Plus Version
Compared to WattCycle 12V 100Ah Trolling Motor battery, this 12V 100Ah Dual Purpose Marine Battery has more 3 advanced functions: self-heating, force start, and engine starter.
Reliable 1200CCA Cold Cranking Power Energizes Your Boat
The BMS (Battery Management System) of a 12V 100Ah marine cranking battery can support a continuous constant discharging current of 200 amperes and can withstand an instantaneous current of 1200 amperes within 3 seconds. When the battery voltage exceeds approximately 14 volts, the BMS activates a passive balancing process at the end of each charge cycle.
Keep Powering Your Trip in Cold Weather
For areas in cold temperatures, the self-heating function of this battery will help a lot. It automatically heats itself when the temperature drops below 0°C. The self-heating process continues until the battery reaches 5°C, ensuring optimal performance in low temperatures. It's the wise energy choice if you would like to ice fish or snow camp.
Forced Start Button, Double Guarantee of Energy & Safety
When the remaining capacity of the LiFePO4 battery drops to 20%, the built-in protection mechanism will be triggered to prevent over-discharge to extend the battery life and ensure safety. The forced start button can temporarily bypass the protection mechanism, release the remaining capacity, and provide emergency power support for the device.
The physical forced start button is not needed for mobile phone operation, you can start the backup power even if your mobile phone is out of power.
Monitoring WattCycle Bluetooth Battery via WattCycle App
Connecting the WattCycle Bluetooth battery with your phone takes just 3 easy steps: Download the WattCycle App from Apple App Store or Google Play, Search for your Bluetooth battery, and Select the battery on the App. On the WattCycle App, you can check the battery's SoC, voltage, current, power, and the working temperatures.
Four Charging Methods, No Fear of Energy Shortage
There are four charging methods to charge the 12V 100Ah marine cranking battery: 14,6V 20A LiFePO4 battery charger, generator with 14,6V 20A AC-DC charger, solar panel with MPPT, and alternator with charger.
Multiple charging methods allow you to use the solar panel with MPPT to charge while sailing, and use a 14,6V 20A LiFePO4 charger on shore to charge. No matter where you are, there is a charging method suitable for you to escort your journey.
Meet Your Various Needs on The Water
WattCycle 12V 100Ah dual purpose marine battery with dual mode of starting the marine outboard motor and storage the energy can satisfy your different needs on the water. Wether you need to start an engine of the boat, or provide energy to fish finder, this two in one battery is a wise choice for you.
PRODUCT DESCRIPTION
Small Battery but Massive Power: With the small size of L354 x W176 x H187 mm(DIN H8), and 11kg light weight, the 12V 100Ah dual purpose battery occupies little space but provides 1280Wh energy and an instantaneous current of 1200A within 3 seconds.
Two in One Battery with Dual Purpose Mode: The dual purpose mode lets you use it to start an engine or store energy, making it a trustworthy choice not only in marine but also in motorhomes and off-grid systems.
Self-heating Suitable for Cold Areas: When the temperature drops below 0℃, the self-heating function will heat the battery automatically to 5℃ and no fear of power outages when the temperature drops below 0℃, letting you have enough usable energy to enjoy snow camping.
1200 Cold Cranking Amps Fit Marine Needs: Providing 1200CCA@20S and IP67 waterproof, the WattCycle 12V 100Ah dual purpose starter battery is perfectly suitable to start an engine in marine environments, ideal companion when you sail on the sea.
Bluetooth 5.0 Connecting: Built-in Bluetooth allows you to check and control the battery conveniently. On the WattCycle App, you can control battery charge/discharge, check battery's SOC, voltage, current, power, single cell voltage and temperature and so on.
Reliable Emergency Energy Backup: When the remaining capacity of the LiFePO4 battery drops to 20%, the built-in protection mechanism will be triggered to prevent over-discharge. The forced start button can temporarily bypass the protection mechanism, release the remaining capacity and provide emergency power support for the device.







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