【🍁 Fall Sale, Final €1287,79】WattCycle 12V 628Ah Ultra Lithium Battery with Bluetooth
Estimated dispatch: October 13-17 | Delivery: October 20-31
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- ✔ L480 x W362 x H242 mm, 69.85 kg
- ✔ 3840W Output Power, 8038Wh Usable Energy
- ✔ Equivalent Usable Energy to 2 x 12V 314Ah Mini Bluetooth Batteries in Parallel
- ✔ Ultra-powerful 300A BMS, 300A Max. Cont. Dis-/Charge Current, 310A ± 10A @ 1.2s Peak Discharge Current
- ✔ Real-Time Monitoring via WattCycle App
- ✔ Support 4P4S Connection to 128,6 kWh Energy
- ✔ 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 (service@wattcycle.com) or WhatsApp(+852 5473 5422).

- 1 Pack (Final €1287,79) - €1.369,99
- 2 Pack (€1287,79/each) - €2.739,99
- 3 Pack (€1274,95/each) - €4.068,99
- 4 Pack (€1274,95/each) - €5.425,99
【🍁 Fall Sale, Final €1287,79】WattCycle 12V 628Ah Ultra Lithium Battery with Bluetooth
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
Unleashing the Future of Energy – 12V 628Ah Ultra Bluetooth Battery
Experience cutting-edge LiFePO4 energy storage with the WattCycle 12V 628Ah Ultra Bluetooth battery, designed for unmatched reliability, efficiency, and scalability. Built with EV-grade A+ prismatic cells and a powerful 300A BMS, it provides advanced 6X protection. With configurable 4P × 4S expansion, this LiFePO4 deep cycle battery can scale up to an impressive 128.61kWh, making it ideal for large-scale solar systems, motorhomes, marine vessels, and off-grid installations.
Foremost Bluetooth Monitoring & Control
With built-in Bluetooth 5.0 connectivity, the WattCycle App gives you complete control of your 12V 628Ah Ultra lithium battery right from your smartphone. Instantly track real-time data such as voltage, current, and cell temperature, and adjust key parameters.
This intelligent Bluetooth ensures your 12V 628Ah Ultra LiFePO4 deep cycle battery is always operating at peak performance. Whether powering an off-grid solar system, driving a campervan energy setup, or supporting a marine power bank, you gain full visibility and the ability to fine-tune performance with just a few taps. It’s smarter, safer, and more convenient energy management designed for demanding applications.
Rugged Protection for Extreme Climates
Engineered for reliability in all seasons, the WattCycle 12V 628Ah Ultra Bluetooth lithium battery integrates advanced thermal management to safeguard performance in both freezing winters and sweltering summers. Charging is automatically paused below 0℃ and resumes only once the temperature rises above 5℃, while discharging is halted below–20℃ to prevent internal cell damage.
This intelligent design ensures the 12V 628Ah Ultra LiFePO4 deep cycle battery delivers consistent, uninterrupted energy even in the harshest environments. Whether powering remote off-grid cabins, caravans in icy climates, or marine systems exposed to intense heat, you can count on dependable long-term operation with no compromise in safety or efficiency.
Outstanding Performance Over Lead-acid Batteries
The WattCycle 12V 628Ah Ultra lithium battery sets a new benchmark in durability and safety compared to outdated lead-acid systems. Compared with 3 Pack 12V 200Ah lead-acid batteries, this 12V 628Ah delivers 2.23 times the usable energy of the lead-acid ones. Although it provides more energy, it weighs nearly 50% lighter than the lead acid batteries. Whether installed in a warehouse, boat, or backup power system, this 12V 628Ah battery delivers unmatched reliability and efficiency.
Scalable High-capacity Energy Solutions
Each WattCycle 12V 628Ah Ultra LiFePO4 battery delivers an impressive 8,038.4Wh of usable energy in a compact design (L480 x W362 x H242 mm | 69.85 kg). For larger projects, up to 16 units can be configured in a 4P4S system(4 in parallel and 4 in series), creating a powerful 51.2V 2512Ah bank with a massive 128.61kWh capacity. This modular architecture ensures maximum flexibility, allowing you to scale energy storage from a single battery to a full residential microgrid or large-scale commercial backup system.
Three Charging Methods, Always Stay Energized
There are 3 charging methods to charge the 12V 628Ah Ultra Bluetooth LiFePO4 battery, making you no longer fear energy shortage. Charging it with the WattCycle 12V 60A LiFePO4 battery charger, it only takes 10.46 hours to fully charge the 12V 628Ah Ultra battery, significantly faster than traditional lead-acid batteries. For added convenience, 2 additional charging methods are provided: solar panels with an MPPT and generators, which offer versatile solutions to keep your battery powered in any environment, whether on the road, at sea, or off-grid.
Reliable Energy Solutions for Whatever Life You Lead
The WattCycle 12V 628Ah Ultra LiFePO4 battery is engineered for versatility, making it the ideal choice for both residential and commercial energy needs. From home energy storage and remote off-grid microgrids to marine vessels and long-distance campervan travel, this LiFePO4 deep cycle battery provides stable, long-lasting power. In mission-critical systems such as UPS backup or telecom stations. Whether powering a cabin, supporting a solar array, or delivering reliable energy on the water, the WattCycle 12V 628Ah Ultra lithium battery ensures dependable performance for today’s most demanding applications.
PRODUCT DESCRIPTION
Resilience for Extreme Energy Needs: The WattCycle 12V 628Ah Ultra Bluetooth LiFePO4 Battery redefines energy storage with massive capacity and intelligent design. Built with advanced LiFePO4 technology, it ensures unmatched reliability, high cycle endurance, and scalable energy for motorhomes, yachts, solar storage, and commercial backup systems.
Ultra-High Usable Energy of 8,038Wh: Compact yet powerful, this battery provides more than 8kWh of storage in a single unit (L480 × W362 × H242 mm, 69.85 kg). Equivalent to two 12V 314Ah batteries in parallel, it maximizes space and energy efficiency for motorhomes, off-grid homes, and marine applications.
Premium EV-Grade A+ Cells: Manufactured with prismatic automotive-grade cells, this 12V 628Ah Ultra lithium leisure battery offers superior stability, safety, and durability. It achieves over 6,000 cycles at 80% DoD, delivering up to a decade of reliable use—far exceeding standard lithium batteries.
Smart Bluetooth Monitoring & Flexible Expansion: Monitor real-time performance—voltage, SoC, current, temperature via the WattCycle app. Configure up to 4 in parallel (2,512Ah) or 4 in series (51.2V) for a total 128.61kWh capacity. After expansion, users can easily track each battery’s status and manage charging/discharging through Bluetooth.
Powerful 300A Continuous Discharge: Equipped with a robust 300A BMS, the battery delivers 3,840W continuous output, supporting heavy-duty inverters, industrial-grade equipment, and high-demand off-grid systems.
Triple Energy Density of Lead-Acid: At 115Wh/kg, this LiFePO4 deep cycle battery achieves three times the energy density of traditional lead-acid batteries. Lightweight yet powerful, it is ideal for campervans, marine vessels, and mobile energy storage solutions. Constructed with recyclable materials, it is maintenance-free and eco-friendly.
Advanced 8-Fold Safety Protection: The integrated 300A BMS provides critical safeguards, including over-charge, over-discharge, over-current, short-circuit, and temperature protections. Charging cut-off: -5°C to 60°C; discharging cut-off: -25°C to 75°C, ensuring safe use in extreme environments.
Wide Application & Optimized Lifetime Value: Designed for off-grid residences, solar storage systems, motorhomes, boats, farms, UPS backup, and emergency power, the WattCycle 12V 628Ah Ultra offers exceptional longevity, reducing overall cost of ownership and ensuring energy independence.