【Back in Stock: 5% OFF】WattCycle 12V 300Ah (280Ah) Mini LiFePO4 Battery
Expected Delivery on - .
This battery model Label is wrong, actually is the 12V 280Ah Mini battery (equipped with rated 280Ah but tested ≥310Ah battery cells).
- ✔ Equipped with EVE LF280K-280Ah grade A+ LiFePO4 cells
- ✔ L384 x W194 x H248mm, 27kg
- ✔ 33% smaller than 3 pack of 12V 100Ah (same capacity)
- ✔ 2560W Output Power, 3584Wh Usable Energy
- ✔ 200A BMS, 200A Max. Cont. Dis-/Charge Current, 600A ± 50A 1.2s Peak Discharge Current
- ✔ Support 4P4S Connection to 57.344kWh Energy
Services and Benefits
Enjoy free & fast shipping to most European countries on WattCycle orders. Ship from Germany or Poland. Your package will typically arrive within 2-7 business days, so you can sit back and relax without worry.
*Please see our Shipping Policy for more details.
WattCycle guarantees the quality and performance of our batteries and provides a straightforward, hassle-free warranty.
*Please see our Warranty Policy for more details.
We'll Always be There for You.
If you have any questions or concerns, feel free to contact us via Email (service@wattcycle.com) or WhatsApp.

- 1 Pack - €559,99
- 12V 300Ah Mini with a monitor - €649,99
- 👍 2 Pack (€526,77/each) - €1.108,99
- 3 Pack (€521,55/each) - €1.646,99
- 4 Pack (€516,09/each) - €2.172,99
【Back in Stock: 5% OFF】WattCycle 12V 300Ah (280Ah) Mini LiFePO4 Battery
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.
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:
Discounted 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.
Contact
Shenzhen Washi Energy Co., Ltd.
Room A503, Building A, Lankun Group, Baoxin Road, Dajingshan, Buxin Community, Xin'an Street, Baoan District, Shenzhen
FREQUENTLY BOUGHT TOGETHER
Beyond Rated Capacity, Up to 314Ah Capacity
WattCycle randomly selected 20 pcs 12V 300Ah (280Ah) Mini deep cycle LiFePO4 cells for voltage, internal resistance, size (length x width x height), capacity, weight, and appearance testing before the products were shipped. From the 6th column of the report, we can see that the capacity range of the tested batteries is 311Ah — 314Ah! That's amazing!
Mini Size, Massive Power
WattCycle 12V 300Ah (280Ah) Mini deep cycle LiFePO4 battery is equipped with EVE LF280K-280Ah grade A+ cells and 100% all-round safe BMS protections, providing up to 15000+ cycles life massive and 3584 Wh energy.
Ultra-high Energy Density, Perfect Lead-acid Replacement
WattCycle 12V 300Ah (280Ah) Mini LiFePO4 battery with only 27 kg weight and massive 3584 Wh energy is known as an ultra-high energy density battery (132.74 Wh/kg), 1.6 times more powerful than 3 pcs 12V 100Ah lead-acid batteries.
Place The Mini Battery As You Expect
WattCycle 12V 300Ah (280Ah) Mini batteries use an iron bracket to fix the battery cells inside, and the battery shell adopts a square structure. You can place the battery according to your needs, except that the top cover cannot touch the ground.
Smaller Size, Same Capacity
3 pcs 12V 100Ah lead-acid batteries are connected in parallel to form a 12V 300Ah battery system (1800 Wh), but the space occupied will be more than a WattCycle 12V 300Ah (280Ah) Mini LiFePO4 battery (3584 Wh), and only half the energy than WattCycle.
IP65 Waterproof & Dustproof
WattCycle 12V 300Ah (280Ah) Mini battery with IP65 water- and dustproof can be used in most outdoor applications, such as marine, camping, RV life, etc.
Massive 3584 Wh Energy, Power More Applications
3584 Wh energy and 2560 W output power meet your indoor power demands and elevate your outdoor adventure experience. As Your Partners From Now Until Forever.
Versatile Power Solution
Designed to be powerful and portable, the WattCycle 12V 300Ah (280Ah) Mini battery is light to carry and reliable to power your devices anywhere — ideal for RVs, Yachts, UPS, and off-grid living applications.
PRODUCT DESCRIPTION
Extreme Compact & Lightweight Design: The dimension of WattCycle 12V 280Ah Mini deep cycle LiFePO4 battery is L384 x W194 x H248mm, weight is 27kg, which is smaller and lighter than most 12V 280Ah batteries on the market. It is the best choice for your RV, home storage, and even your boat!
EVE LF280K-280Ah Cells: WattCycle 12V 280Ah Mini LiFePO4 battery is equipped with EVE LF280K-280Ah grade A+ LiFePO4 cells (rated voltage is 3.2V, rated capacity is 280Ah; however, the actual capacity measured is ≥ 310Ah), ensuring top-tier safety, energy density, power, and stability.
100% All-around 200A BMS Protection: WattCycle 12V 280Ah Mini LiFePO4 battery with high-performance 200A BMS manages charge and discharge cycles, ensuring a maximum output and input current of 200A. Also, it can protect our battery against overcharge, over-discharge, over-current, short circuits, and extreme temperature (High and low-temperature environments).
Ultra-high Energy Density: With a high energy of 3584Wh and only 27kg lightweight, WattCycle 12V 280Ah Mini battery is known as the ultra-high energy density battery. 3584Wh / 27kg = 132.74Wh/kg! Compared to buying 3 12V 100Ah lead-acid batteries, this battery is your best lead-acid alternative.
Expandable up to 57,34kWh Energy Solution: All WattCycle 12V batteries can support 4 in series and 4 in parallel. If 16 pcs 12V 280Ah Mini batteries are connected in 4 in series and 4 in parallel, a 51.2V 1120Ah battery system can be formed, which can release 40.96kW continuous power and 57.34kWh energy.
TECH SPECIFICATIONS
COMPARISON
Other Brand 12V 280Ah LiFePO4 Battery | WattCycle 12V 280Ah LiFePO4 Battery | Other Brand 12V 300Ah LiFePO4 Battery |
EV Grade A LiFePO4 Cells | EVE LF280K-280Ah | EV Grade A LiFePO4 Cells |
280Ah | 280Ah (Initial Capacity ≥ 310Ah) | 300Ah |
L522 x W240 x H218 mm | L384 x W194 x H248 mm | L522 x W240 x H218 mm |
26.85 kg | 27 kg | 29.09 kg |
✔ Low-Temperature Protection | ✔ Low-Temperature Protection | x Low-Temperature Protection |