We heard you. Due to overwhelming demand and to ensure none of our community misses out, WattCycle is officially extending our Cyber Monday promotion through Friday, December 5, 2025. This gives you extra time to upgrade your power system with our premium LiFePO4 batteries at our best prices of the year.
During this extended sale, enjoy savings of up to $1,000. Plus, unlock an additional 8% off your entire cart at checkout using code "BlackFriday8%"—no minimum purchase required. Rest assured with our 30-Day Price Protection Guarantee: if any item you purchase drops in price within 30 days, we’ll automatically refund you the difference.
Pay for Energy, Not Just Specs
At WattCycle, we build our batteries around a core principle: you should pay for usable energy (Watt-Hours), not just a capacity rating (Amp-Hours). That’s why we utilize top-tier EV-grade A+ cells and robust Battery Management Systems (BMS) in every product, ensuring long-term performance, safety, and true value across thousands of cycles.
Here are the standout deals from our extended promotion:
The High-Capacity Choice: Identical Energy, Two Voltage Options
For large-scale applications like RVs, off-grid homes, and marine systems, we offer the same massive energy reserve in your preferred voltage.
WattCycle 12V 628Ah Battery
Promotional Price: $999.99 (was $2,599.99) | After using the "BlackFriday8%" battery coupon code, the price is only $920.
Key Specs: 8,038.4Wh of usable energy | 300A BMS | 15,000+ cycle lifespan
Perfect For: 12V systems demanding maximum runtime, such as large off-grid solar setups, full-time RV living, or extended marine voyages. Its substantial 8+ kWh capacity reliably powers heavy-duty appliances like air conditioners and large inverters for prolonged periods.
Product link: Wattcycle 12V 628Ah Ultra LiFePO4 Battery
WattCycle 24V 314Ah Battery
Promotional Price: $999.99 (was $1,999.99) | only $920 after "BlackFriday8%" battery coupon code.
Key Specs: 8,038.4Wh of usable energy | 300A BMS | 15,000+ cycle lifespan
Perfect For: 24V systems requiring high-capacity energy storage. It delivers the same 8 kWh of usable energy as the 12V 628Ah battery at the same price—exemplifying our fair-value philosophy. It is ideally suited for 24V solar integrations, backup power for critical home circuits, large trolling motors, or custom high-power mobile applications.
Product link: WattCycle 24V 314Ah Ultra LiFePO4 Battery
WattCycle 12V 314Ah Mini Battery
Promotional Price: $399.99 (was $629.99) | only $367.99 after "BlackFriday8%" battery coupon code.
Key Specs: 4,019Wh of usable energy | 200A BMS | 15,000+ cycle lifespan
Perfect For: For those seeking optimal value, this 12V 314Ah Mini battery stands out as the best Wh-per-dollar choice in this Cyber Monday sale. Its 4 kWh capacity is an outstanding match for weekend RV getaways, week-long boating trips, essential home backup (e.g., for refrigeration or pumps), or as a primary/expansion battery for over landing and van life builds, offering an ideal balance of size, power, and price.
Product link: WattCycle 12V 314Ah Mini battery
Secure Your Power Upgrade Today
This extended window is your final opportunity in 2025 to invest in durable, high-performance energy storage at significant savings. Choose the WattCycle battery that aligns with your energy needs and system voltage.
Sale Ends: Friday, December 5, 2025, at 11:59pm.
Shop and using your coupon code "BlackFriday8%" at checkout to save.
