【🍁 Fall Sale, Final €144,39】Second-hand WattCycle 12V 100Ah Deep Cycle LiFePO4 Battery
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- ✔ L260 x W168 x H209mm, 10.5kg
- ✔ 1280W Output Power, 1280Wh Usable Energy
- ✔ 121.90Wh/kg Ultra-high Gravimetric Energy Density
- ✔ 100A BMS, 100A Max. Cont. Dis-/Charge Current, 300A ± 50A 1.2s Peak Discharge Current
- ✔ Support 4P4S Connection to 20.48kWh Energy
- ✔ Low-Temp CutOff Protection
Notify me when available
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).

【🍁 Fall Sale, Final €144,39】Second-hand WattCycle 12V 100Ah Deep Cycle 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.
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
WattCycle 12V Flagship Battery
The WattCycle 12V 100Ah LiFePO4 deep cycle battery is engineered with a compact design (BCI Group 24 Size, L260 × W168 × H209 mm) and IP65 water- & dustproof rating. Featuring EV Grade A+ LiFePO4 cells and an advanced 100A BMS, it delivers exceptional performance, enhanced safety, and a stable output of 1280W, making it ideal for both indoor and outdoor energy solutions.

EV Grade A+ LiFePO4 Cells for Longevity
Constructed with premium A+ prismatic lithium cells, the WattCycle 12V 100Ah battery provides: 5000+ cycles @100% DOD, 8000+ cycles @70% DOD, and 15000+ cycles @40% DOD. In comparison, lead-acid batteries typically last only 300–500 cycles. Benefit from:
- High Energy Density
- Long Cycle Life
- Superior safety standards
- Stable and efficient performance

Intelligent 100A BMS Protection
This 12V 100Ah lithium battery integrates a smart 100A Battery Management System (BMS) to guard against overcurrent, overcharge, over-discharge, overload, extreme temperature (high and low temperature), and short-circuit.
- Max. continuous charge-/ discharge current: 100A
- Max. discharge current (1.2s): 300A ± 50A
Extreme Temperature Adaptability
Designed for harsh conditions, the WattCycle LiFePO4 deep cycle battery operates reliably in environments from -20℃ to 70℃ and can be safely charged between 0℃ and 50℃, ensuring dependable performance in both hot and cold climates.
Drop-in Lead-Acid Replacement
Weighing only 10.55kg and compact in size, the WattCycle 12V 100Ah LiFePO4 battery boasts an impressive 121.33Wh/kg energy density, far outperforming traditional lead-acid batteries (27.40Wh/kg). This makes it the smartest and most efficient alternative to lead-acid replacements.
Renewable 20.48kWh Energy Solution
For larger-scale energy needs, the WattCycle 12V 100Ah LiFePO4 batteries support up to 4 in parallel × 4 in series (4P4S). With 16 units, you can build a powerful 48V 400Ah system, providing 20.48kWh usable energy and 20.48kW continuous output power—ideal for residential solar, off-grid, and commercial applications.
Versatile for Multiple Applications
The WattCycle 12V 100Ah lithium battery is a reliable choice for a wide range of scenarios. From campervans, motorhomes, and marine systems to solar energy storage, trolling motors, and off-grid cabins, its EV Grade A+ cells and advanced BMS deliver safe, efficient, and long-lasting energy wherever you need it.
PRODUCT DESCRIPTION
High Energy Density & Lightweight Design: The WattCycle 12V 100Ah lithium battery delivers 1280Wh of energy with a continuous output of 1280W, all in a compact unit weighing only 10.50kg. With an energy density of 121.90Wh/kg, it is nearly five times higher than traditional lead-acid batteries (27.40Wh/kg), making it the perfect upgrade for portable and space-restricted applications.
Premium EV Grade A+ LiFePO4 Cells: Built with advanced EV Grade A+ prismatic cells, the WattCycle 12V 100Ah LiFePO4 deep cycle battery ensures more than 5,000 cycles and a service life of up to 10 years. Compared with lead-acid options, it is eco-friendly, non-toxic, chemically stable, and inherently safer, delivering peace of mind alongside exceptional performance.
Smart 100A BMS Protection: Equipped with a 100A intelligent Battery Management System (BMS), this 12V 100Ah lithium battery provides robust safeguards against over-voltage, over-current, over-discharge, over-charge, short-circuit, and extreme temperature.
Scalable Energy Expansion up to 20.48kWh: For larger setups, the WattCycle LiFePO4 deep cycle battery supports up to 4 units in series and 4 units in parallel. This modular design enables the creation of a 48V 400Ah battery bank, delivering an impressive 20.48kWh of energy and 20.48kW continuous output—suitable for both residential and commercial systems.
Versatile Applications: From campervans, boats, and off-grid cabins to home storage systems, WattCycle deep cycle LiFePO4 batteries deliver dependable power. Lightweight, maintenance-free, and built for demanding environments, this 12V 100Ah lithium battery is the smart choice for modern energy needs.
TECH SPECIFICATIONS
FAQ's
What is the maximum charging current for a 12V 100Ah LiFePO4 battery?
How many watt hours in a 100Ah 12V battery?
Can a 12V 100Ah battery be used in extreme temperatures?
How long will a 12V 100Ah battery last?
What size solar panel to charge 12V 100Ah battery?
Is it better to have a 2 100Ah or 1 200Ah battery?
Can I connect this 12V 100Ah lithium battery with a Mini battery?
What is the difference between a 12V 100Ah battery and a Mini battery?
How long do 4 Parallel 12V 100Ah lithium batteries last?
COMPARISON
Other Brand 12V 100Ah LiFePO4 Battery | WattCycle 12V 100Ah LiFePO4 Battery | 12V 100Ah Lead-acid Battery (AGM Battery) |
L329 x W172 x H214 mm | L260 x W168 x H209mm | L275 x W175 x H190 mm |
11 kg | 10.5 kg | 21.5 kg |
1280Wh Usable Energy | 1280Wh Usable Energy | 600Wh Usable Energy |
0.1056 Wh/cm³ | 0.1402 Wh/cm³ | 0.0656 Wh/cm³ |
116.36 Wh/kg | 121.90 Wh/kg | 27.91 Wh/kg |
€0.0286/kWh (€219.99/pcs @6000 Cycles) | €0.0255/kWh (€195.99/pcs @6000 Cycles) | €0.722/kWh (€129.99/pcs @300 Cycles) |
x Low-Temperature Protection | ✔ Low-Temperature Protection | x Low-Temperature Protection |