【🛒 Black Friday】Second-hand WattCycle 12V 100Ah Marine Battery with Bluetooth for Trolling Motor
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- ✔ L260 x W168 x H209mm (same size as 12V 100Ah), 11.1kg
- ✔ IP67 Water- and dustproof
- ✔ 1536W Output Power, 1280Wh Usable Energy
- ✔ 115.32Wh/kg Ultra-high Gravimetric Energy Density
- ✔ 120A BMS, 120A Max. Cont. Dis-/Charge Current, 400A ± 50A 1.2s Peak Discharge Current
- ✔ Real-Time Monitoring via WattCycle App
- ✔ Support 4P4S Connection to 20.48kWh Energy
- ✔ Low-Temp CutOff Protection✔ Certifications: IEC, CE-EMC, CE-RoHS, CE-Battery, FCC-SDOC, UN38.3, MSDS
Local Poland warehouse, 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(+852 5473 5422).

【🛒 Black Friday】Second-hand WattCycle 12V 100Ah Marine Battery with Bluetooth for Trolling Motor
Thanks for choosing WattCycle. At WattCycle, we're committed to your satisfaction with our product(s). We guarantee that all WattCycle products are strictly tested by our quality inspectors before delivery.
We understand that there may be situations where you need to return or exchange your purchase. The following "Return & Refund Policy" applies to WattCycle products.
Order Cancellation
WattCycle accepts order cancellation before the product is shipped or produced. If the order is canceled, you will get a full refund via the original payment method within 10 working days (Due to delays in processing refunds from a bank).
WattCycle cannot cancel the order if the product has already shipped out.
Lost / Damaged Products Received
If the product was not delivered or lost, please immediately contact us. We will inquire about the situation and send you a statement. After you sign and send us the statement, we will re-arrange the shipment of your order.
If the product you received was damaged, or if you received an incorrect or incomplete product, please immediately contact us with proof of videos or pictures and product serial number (This number is on a sticker on the product, below the barcode.). After providing the above certificates and serial numbers, we will provide you with a solution based on the damaged or missing items.
30-Days Money-Back Guarantee
Within 30 days of purchase, if you are unsatisfied with the product and there are no quality issues, you are entitled to a refund upon returning the item in its complete, unused condition with original packaging intact. However, you will be responsible for covering the round-trip costs (including shipping fees and handling charges). Costs vary by country/region. Please contact us to confirm the specific costs..
If 30 days have passed since the purchase, a full refund cannot be offered.
Attention: For products that have been used (Unboxing), WattCycle reserves the right to refuse the return.
Return Shipping Cost
WattCycle Pays For Return Shipping
WattCycle will pay for the cost of return shipping if the reason for the return was the result of our error.
Examples of instances may include:
Item arrived defective and cannot be fixed with a replacement part.
We shipped out the wrong item.
We shipped it to the wrong address.
We shipped a duplicate order.
Item malfunctioned during the 30 day returns period. (The customer should install and operate the item properly per the product manual instruction.)
Attention
For items that arrive damaged or are defective, the customer MUST provide videos or photos to support the claim that the item arrived damaged or is malfunctioning. If a customer refuses to or fails to provide videos or photos of a claimed malfunctioning/damaged item, this return will be treated as “buyer’s remorse” and the customer is solely responsible for shipping it back. Once we have received the approved returned item, we will review its condition. If the item is found to be defective, we will issue a refund within 3 working days.
Customer Pays For Return Shipping
In the case of a return due to customer error, return shipping is the customer’s responsibility and shipping charges are paid by the customer. Fees vary by country, please contact us for specific fees.
Attention
Any order offered with special shipping charges is subject to a deduction from our actual outbound shipping costs.
After the 30-day returns period, customers may use the WattCycle Warranty Policy for repairs if the item is faulty or malfunctioning. Please refer to the WattCycle Warranty Policy for details.
Return Item & Address
After confirming with our customer service team that a return is possible, we will provide you with a return solution based on your order's fulfillment warehouse.
If your order was shipped from a German warehouse, we are unable to provide a return label. You will need to contact our customer service team to obtain the return address and arrange the return yourself.
If your order was originally shipped from a Polish warehouse, we will provide you with a return label. You simply need to take the product with the return label attached to a courier station to ship it back.
Return Address: Xixi, Generała Mikołaja Bołtucia 10, Grodzisk Mazowiecki, 05-827, Poland
Refund
For non-quality-related issues and unopened packages, you will be responsible for covering the round-trip costs (including shipping fees and handling charges). Costs vary by country/region.
For quality-related issues reported more than 30 days after the purchase date, WattCycle will provide a partial refund based on the product's usage condition.
Refund Timeline: Once the product is returned to the WattCycle warehouse, WattCycle will process the refund within 7 business days and send you a refund confirmation notification.
Refund Method: The refund will be issued to your original payment method and account.
Attention
If you do not receive the refund within 10 business days, please contact us, and we will assist you in checking the refund status.
Disclaimer
WattCycle does not offer refunds for the following cases:
Price difference of discount or promotional items.
WattCycle products purchased through other entities (e.g., distributors or retail partners).
Returns from a country/region different from the original shipping address of the order. If the return address differs from the original shipping location, resulting in shipping costs exceeding the initial fees, the user will be responsible for covering the additional shipping fees.
Products showing signs of wear, use, or alterations from their original condition.
Products damaged or lost during the return process.
Changes to This Policy
We reserve the right to modify this Return & Refund Policy at any time. We will post any changes to this policy on our website. We appreciate your support! If you have any questions about our shipping policy, please feel free to contact us.
FREQUENTLY BOUGHT TOGETHER
The Best 12V Marine Battery
Integrated with Bluetooth 5.0, a robust 100A BMS, and IP67 waterproof&dustproof protection, the WattCycle 12V 100Ah Marine battery is engineered for superior performance on the water. Designed to go farther, last longer, and deliver smarter power, its compact dimension (L260 x W168 x H209mm) and optimized weight (11.1kg) free up valuable vessel space and payload, which allows you to carry more gear and cruise with confidence for longer.
Monitor Your WattCycle Marine Battery Anytime
Staying connected to your power source is effortless with the WattCycle 12V 100Ah Marine Battery. The simple 3-step process gets you real-time data in moments: Download the WattCycle App, Locate Your Battery via Bluetooth, and Connect to Monitor. You can download the app by scanning the provided QR code or by searching "WattCycle" directly in Google Play or the Apple App Store. Once connected, you gain full visibility over key metrics like State of Charge, voltage, and current, while also having the ability to manage to charge and discharge remotely.
Drop Bulky Lead-acid Battery, Embrace Lightweight LiFePO4 Battery
Unlike traditional lead-acid batteries limited to just 50% depth of discharge, the WattCycle 12V 100Ah Marine Battery delivers 100% usable energy and maintains exceptional performance for over 5,000 cycles at full depth of discharge. This equates to more than 10 years of reliable daily power, even with complete daily charge and discharge cycles.
Three Versatile Charging Options for All-Day Marine Power
Keep your 12V 100Ah Marine Battery powered throughout your voyage with multiple charging solutions. You can efficiently recharge using: ①A LiFePO4 battery charger; ②A compatible generator; ③Solar panels with an MPPT controller while underway.
Important Notice: 1️⃣The WattCycle 12V 100Ah Trolling Motor LiFePO4 battery cannot be used as a starting battery. 2️⃣When charging LiFePO4 batteries, you must use a LiFePO4 battery charger. You cannot use a lead-acid battery charger to charge LiFePO4 batteries. 3️⃣Please use the batteries from the same brand, same voltage, same BMS, same capacity and purchased in 6 months to form the battery system(series or parallel batteries).
Reliable Power for Diverse Marine & Mobile Applications
Engineered for versatility, the compact and powerful WattCycle 12V 100Ah Marine Battery delivers dependable energy wherever your journey takes you. Its portable design and consistent performance make it an ideal power source not only for all marine applications but also for motorhomes, off-grid solar setups, camping adventures, and various other mobile or stationary needs.
PRODUCT DESCRIPTION
Optimized for Trolling Motors: The WattCycle 12V 100Ah LiFePO4 trolling motor battery is purpose-built for European anglers and boat owners who need reliable, long-lasting power on the water. With its compact dimensions (L260 × W168 × H209 mm) and lightweight 11.1kg design, it fits perfectly in kayaks, fishing boats, and sail boats.
Powerful 1.2C High Discharge Performance: Equipped with a 120A high-performance BMS, this LiFePO4 marine battery delivers up to 120A continuous discharge and a 400A peak current for 0.3 seconds — ensuring instant torque and smooth acceleration for trolling motors and electric propulsion systems.
Real-Time Bluetooth Monitoring: Monitor your 12V lithium trolling motor battery in real time using the WattCycle Smart App via Bluetooth 5.0. Instantly access essential information including state of charge (SOC), power output, voltage, current, and temperature, helping you stay in control during every trip.
EV-Grade A+ LiFePO4 Cells for Long Life: Built with EV Grade A+ prismatic LiFePO4 cells, the WattCycle trolling motor battery offers over 5000+ full charge cycles and a service life of up to 10 years — far outperforming traditional AGM or lead-acid marine batteries in both reliability and longevity.
Durable IP67 Waterproof Design: Designed for the harsh marine environment, this IP67-rated LiFePO4 marine battery is resistant to water, dust, and salt spray, making it ideal for freshwater and coastal use. The rugged casing ensures stable operation even in wet, humid, or dusty conditions.
Perfect for Marine & Outdoor Adventures: The WattCycle LiFePO4 trolling motor battery is the perfect energy source for fishing boats, kayaks, and off-grid marine systems across Europe. Delivering stable power, lightweight portability, and advanced smart monitoring, it’s the ultimate solution for eco-conscious boaters seeking performance and peace of mind.
TECH SPECIFICATIONS
COMPARISON
| Other Brand 12V 100Ah Trolling Motor LiFePO4 Battery | WattCycle 12V 100Ah Trolling Motor Bluetooth LiFePO4 Battery | 12V 100Ah Lead-acid Battery (AGM Marine Battery) |
| L329 x W172 x H214 mm | L260 x W168 x H209 mm | L275 x W175 x H190 mm |
| 10.05 kg | 11.1 kg | 21.5 kg |
| 1280W Load Power | 1536W Load Power | 600W Load Power |
| 1280Wh Usable Energy | 1280Wh Usable Energy | 600Wh Usable Energy |
| 0.1056 Wh/cm³ | 0.1402 Wh/cm³ | 0.0656 Wh/cm³ |
| x Bluetooth | ✔ Bluetooth | x Bluetooth |
| ✔ Low-Temperature Protection | ✔ Low-Temperature Protection | x Low-Temperature Protection |
































