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WattCycle Easter Sale - 6% discount of 12V 20AhBattery Size and weight of WattCycle 12V 20Ah batteryWattCycle 12V 20Ah deep cycle LiFePO4 Battery with low-temperature protectionWattCycle 12V 20Ah Deep Cycle LiFePO4 Lithium Battery2 pcs WattCycle 12V 20Ah Deep Cycle LiFePO4 Lithium Batteries3 pcs WattCycle 12V 20Ah Deep Cycle LiFePO4 Lithium Batteries4 pcs WattCycle 12V 20Ah Deep Cycle LiFePO4 Lithium Batteries.png
WattCycle Easter Sale - 6% discount of 12V 20Ah
Battery Size and weight of WattCycle 12V 20Ah battery
WattCycle 12V 20Ah deep cycle LiFePO4 Battery with low-temperature protection
WattCycle 12V 20Ah Deep Cycle LiFePO4 Lithium Battery
2 pcs WattCycle 12V 20Ah Deep Cycle LiFePO4 Lithium Batteries
3 pcs WattCycle 12V 20Ah Deep Cycle LiFePO4 Lithium Batteries
4 pcs WattCycle 12V 20Ah Deep Cycle LiFePO4 Lithium Batteries.png

【Easter Sale: 6% OFF, Final Price: €84,59】WattCycle 12V 20Ah LiFePO4 Battery

Regular price €89,99 €159,99 | Save €70,00 (43% off)
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Key Features
  • ✔ L185 x W84 x H154mm, 2.05kg
  • ✔ 256W Output Power, 256WWh Usable Energy
  • ✔ 20A Max. Cont. Dis-/Charge Current, 70A ± 10A 1.2s Peak Discharge Current
  • ✔ Support 4P4S Connection to ‭4096‬Wh Energy

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Services and Benefits

Free Shipping

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.


Hassle-Free Warranty

WattCycle guarantees the quality and performance of our batteries and provides a straightforward, hassle-free warranty.
*Please see our Warranty Policy for more details.


Lifetime Customer Support 24/7

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.


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WattCycle Easter Sale - 6% discount of 12V 20Ah

【Easter Sale: 6% OFF, Final Price: €84,59】WattCycle 12V 20Ah LiFePO4 Battery

1 Pack (Final: €84,59) - €89,99
  • 1 Pack (Final: €84,59) - €89,99
  • 2 Pack (€84,13/each) - €178,99
  • 3 Pack (€83,03/each) - €264,99
  • 👍 4 Pack (€82,25/each) - €349,99

【Easter Sale: 6% OFF, Final Price: €84,59】WattCycle 12V 20Ah 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

€89,99
€89,99

TOTAL: €179,98

Small 20Ah Capacity, Huge Potential

WattCycle 12V 20Ah deep cycle LiFePO4 lithium battery with compact size (L185 x W84 x H154mm) and lightweight design (2.05kg) features 20A BMS, supporting 20A max. cont. dis-/charge current, 70A ± 10A 1.2s peak discharge current. Meet all your needs.​

EV Grade A+ LiFePO4 Cells & 20A BMS Protection

​WattCycle 12V 20Ah deep cycle LiFePO4 lithium battery with EV grade A+ cells and 20A BMS ensures more than 10 years lifespan, 5000 - 15000+ cycles life, and multi-protection (overcharge, over-discharge, over-current, short circuits, extreme temperature (High and low-temperature) protection).

Worry-Free Usage In Cold Weather

WattCycle 12V 20Ah deep cycle LiFePO4 lithium battery with low-temperature cutoff protection and IP65 waterproof ensures charging and discharging safely in cold weather. You can use the battery at -20℃-70℃, and charge at 0℃-50℃.​

Deep Cycle, Long-Lasting

WattCycle 12V 20Ah deep cycle LiFePO4 lithium battery with EV grade A+ LiFePO4 cells provides 5000 - 15000 cycles life and more than 10 years lifespan, ideal for multi-applications, such as rid-on toys, surveillance cameras, scooters, fish finders, emergency lightings, and so on.​

PRODUCT DESCRIPTION

Portable Battery Design: The WattCycle 12V 20Ah lithium-ion battery is smaller (L185 x W84 x H154mm) and lighter (2.05kg) than a conventional 12V 20Ah lead-acid battery (AGM battery). Its energy density is 124.88Wh/kg, while the 12V 20Ah lead-acid battery (AGM battery) only achieves 21.58Wh/kg.

EV-Grade A+ LiFePO4 Cells: The WattCycle 12V 20Ah lithium-ion battery is equipped with high-quality EV-grade A+ cells, ensuring a lifespan of over 5000+ cycles and up to 10 years. Compared to lead-acid batteries, WattCycle LiFePO4 batteries are non-toxic, environmentally friendly, offer higher chemical stability, and ensure both quality and safety.

Comprehensive 20A BMS Protection: The WattCycle 12V 20Ah lithium-ion battery features a 20A battery management system (BMS) that protects against over-voltage, over-current, deep discharge, short circuit, overcharge, and extreme temperatures (high/low). It also enables cell balancing.

Up to 4096Wh Energy Solution: WattCycle 12V Deep Cycle LiFePO4 batteries support up to 4 in series and 4 in parallel. With the 20Ah lithium batteries, a 48V 80Ah battery system can be built, delivering continuous charge and discharge current of 80A, providing a massive energy of 4096Wh and an output power of 4096W.

Versatile Applications: Ideal for small devices such as fish finders, electric fishing reels, fishing equipment, camping gear, amateur radio equipment, and motorized toy cars.

TECH SPECIFICATIONS

  • Technology LiFePO4 Technology
  • Nominal Voltage 12.8V
  • Standard Charging Voltage 14.6V ± 0.2V
  • Nominal/Usable Capacity 20Ah
  • Max. Continuous Output Power 256W
  • Energy 256Wh
  • Battery Dimensions L185 x W84 x H154 mm
  • Weight 2.05 kg
  • Waterproof Rating IP67
  • Warranty 3 Years
  • Casing Material ABS (Flame-Retardant Plastic) + PC / UL 94 V-0
  • Series & Parallel Configurations Max. 4 in Parallel, Max. 4 in Series
  • BMS 20A
  • Max. Continuous Charge/Discharge Current 20A (1C)
  • Short Circuit Protection Yes
  • Release Condition Cut-Off Load
  • Overheat Protection During Charging 60℃ – 70℃
  • Overheat Protection During Discharging 65℃ – 75℃
  • Overheat Protection Release Condition Drops to 5℃ – 15℃
  • Low-Temperature Protection During Charging -5℃ – 5℃
  • Low-Temperature Protection During Discharging -25℃ – -15℃
  • Low-Temperature Protection Release Condition Rises to 5℃ – 15℃
  • Charging Temperature 0℃ – 65℃
  • Discharging Temperature -20℃ – 70℃
  • Storage Temperature 0℃ – 60℃

FAQ's

How long will a 12V 20Ah battery last​?

The battery’s runtime is determined by many factors, including its capacity, the connected load, and the battery’s condition. For example, a new battery performs better than a used one, as its capacity slightly decreases with the number of charge cycles. However, we can estimate the runtime simply based on power consumption and battery capacity:

Runtime (hours) = Battery Capacity (Wh) / Total Device Power Consumption (W)

For example, if you have a 12V 20Ah battery and connect a 50W lamp and a 50W speaker, the battery will last:
256Wh / (50W + 50W) = 2.56 hours

This simple formula helps you estimate runtime under different loads.

How many watts does a 12V 20Ah battery have?

256W! The WattCycle 12V 20Ah battery has a nominal voltage of 12.8V and a continuous charge/discharge current of 20A (1C), delivering a power output of 256W and an energy storage capacity of 256Wh.

Does this 20Ah battery have low-temperature protection? What does it do?

Yes, the WattCycle 12V 20Ah lithium-ion battery is equipped with low-temperature protection. When the temperature drops below 20°C, the battery will automatically stop discharging. This feature maximizes battery protection and ensures reliable performance in diverse environments.

How long to charge a 12V 20Ah battery​?

If you use a 12V 20A LiFePO4 battery charger to charge a WattCycle 12V 20Ah solar battery, the charging time from 0% to 100% is approximately 1 hour.

Calculation:
Charging Time (hours) = Battery Capacity (Ah) / Charging Current (A)
20Ah / 20A = 1 hour

Note:
This assumes ideal conditions (100% charging efficiency and no energy loss).
Always use a LiFePO4-compatible charger (e.g., 14.6V 20A) to ensure safe and optimal charging.

Can I connect WattCycle 12V 20Ah batteries in series or parallel?

Absolutely! To safely connect WattCycle batteries in series or parallel, follow these guidelines:

  • Same brand
  • Same voltage
  • Same current (capacity)
  • Purchased within 6 months (to ensure consistent performance and aging)

Configuration Limits:
All WattCycle 12V lithium batteries support up to 4 in series and 4 in parallel.
Example: 16 x 12V 20Ah LiFePO4 batteries can form a 48V (51.2V) 80Ah battery system, delivering 4096W output power and 4096Wh energy storage.

Key Notes:

  • Series Connection: Increases voltage (e.g., 4 x 12V = 48V), while capacity (Ah) remains the same.
  • Parallel Connection: Increases capacity (e.g., 4 x 20Ah = 80Ah), while voltage remains the same.
  • Always use batteries with identical specifications and age to avoid imbalances and ensure safety.
  • For large systems, consider a battery management system (BMS) to monitor and balance cells.
How many amps for a 12V 20Ah?​

WattCycle 12V 20Ah battery built-in 20A BMS provides max. continuous discharge/charge current 20 amps.

CUSTOMER REVIEWS

Customer Reviews

Based on 2 reviews
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J
J.A
20ah

Great battery, superb customer service. Use it in battery generator.

A
Anders Öberg
My second buy.

Very good products and nice price!
Recommend to watch this guy and hid reviews..

https://youtu.be/UDkJ7Sq21Qw?si=ii9zW4xCskr9Zy0P

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