WattCycle Deep Cycle LiFePO4 Batteries & Accessories
Featuring EVE Grade A+ cells, our batteries are equipped with advanced Battery Management System (BMS) technology and low-temperature protection to ensure optimal performance and safety. Enjoy peace of mind with our comprehensive five-year warranty and local free shipping. Complementing our high-quality batteries, we offer a range of accessories, all backed by a one-year warranty for added assurance. Discover the reliability and excellence of WattCycle, designed to power your adventures and everyday needs.
Why 12V LiFePO4 batteries outlast and outperform 12V AGM deep cycle batteries in marine, RV, and off-grid use. 12V LiFePO4 batteries deliver a flatter discharge curve, holding near-constantVoltage until nearly fully depleted—ideal for keeping marine electronics at steady power and RV appliances running strong. Their built-in BMS over-current protection and low-temperature cut-off safeguard cells against abuse and harsh environments, meaning your 12Volt lithium battery lasts thousands more cycles than an AGM under the same load. At roughly half the weight of a comparable 12V AGM deep cycle battery, the 12V LiFePO4 battery also makes hauling, mounting, and maneuvering in tight boat or camper compartments a breeze.
Spec
12V AGM Deep Cycle Battery
12V LiFePO4 Battery
Cycle Life
~500 cycles
6 000+ cycles at 100% DOD
Weight
~60 lbs (27 kg)
~30 lbs (14 kg)
Depth-of-Discharge
50 % usable capacity
80 – 100 % usable capacity
Cost per Cycle
≈ $0.20 (based on $100 battery / 500 cycles)
≈ $0.03 (based on $150 battery / 5 000 cycles)
Maintenance Tips for Your 12V LiFePO4 Battery
Keep your WattCycle 12V LiFePO4 battery in peak form with these smart habits:
Key Tips for Extending Cycle Life
Avoid full discharges: Try to recharge once the battery hits around 20 % remaining—this “partial cycle” approach can roughly double your cycle count on a 12Volt lithium battery.
Use a compatible charger: A charger designed for 12V LiFePO4 battery chemistry helps maintain the right chargeVoltage and current, reducing cell stress.
Maintain moderate charge rates: Charging at no more than 0.5 C (e.g., 50 A on a 100 Ah unit) keeps heat low and preserves internal cell health.
Storage Guidelines
Ideal temperature range: Store at 32–77 °F (0–25 °C) to slow self-discharge and prevent internal resistance build-up.
State of charge for storage: Leave your battery at 50 % state of charge if you won’t use it for more than a month—this sweet spot minimizes wear.
Periodic top-ups: CheckVoltage every 3–4 months and top up to 50–60 % if it falls below 45 %; a brief recharge helps avoid deep self-discharge.
How BMS Over-current Protection and Low-Temperature Cut-Off Safeguard Your Battery WattCycle’s built-in BMS over-current protection acts like a safetyValve, instantly cutting output if a short or surge occurs, so your LiFePO4 cells stay intact. Likewise, the low-temperature cut-off prevents charging below –4 °F (–20 °C), stopping harmful lithium plating. Together, these features keep your 12V LiFePO4 battery running reliably trip after trip.
What Size Lithium Battery for a 12V Trolling Motor?
Rule of thumb: Start with at least a 12V 100 Ah lithium battery for most kayak and RV trolling motors to ensure several hours of run time.
Calculating Ah needs: - Estimate your motor’s draw (e.g., 30 A) × desired runtime (e.g., 4 h) = 120 Ah required. - Add a 20 % buffer for BMS headroom and to avoid full discharge. When to step up: If you plan longer trips, higher-draw motors, or want extra reserve, opt for a 200 Ah or 280 Ah 12V LiFePO4 battery to double your runtime and extend cycle life. For a deeper dive into selecting the ideal 12V trolling motor battery,Visit our dedicated trolling motor battery guide. You’ll gain precise insights into capacity requirements and learn how to choose the most appropriate 12V battery for your kayak and boat devices.
