Chisen 6-EVF-120- Comprehensive Analysis of the 12V 120Ah Lead-Acid Battery

Lead: The Chisen 6-EVF-120 is a 12V, 120Ah deep-cycle valve-regulated lead-acid (VRLA) battery designed for electric road vehicles such as golf carts, sightseeing cars and electric forklifts.

In the model name, "6" represents the number of cells; each cell has a nominal voltage of 2V, so 6 cells in series give a total voltage of 12V. "E" stands for Electric, "V" for Vehicle, and "F" for acid-proof (valve-regulated sealed). "120" is the rated capacity of 120 ampere-hours (Ah), rated at the 3-hour discharge rate (C3). In other words, discharging at the 3-hour rate with a 40A current for about 3 hours reaches the rated capacity of 120Ah, providing a clear reference of driving range.

Note: Different configurations/versions of the same model may have different dimensions/weights; custom options are available on request.

In the model name, "6" represents the number of cells; each cell has a nominal voltage of 2V, so 6 cells in series give a total voltage of 12V. "E" stands for Electric, "V" for Vehicle, and "F" for acid-proof (valve-regulated sealed). "120" is the rated capacity of 120 ampere-hours (Ah), rated at the 3-hour discharge rate (C3). In other words, discharging at the 3-hour rate with a 40A current for about 3 hours reaches the rated capacity of 120Ah, providing a clear reference of driving range.

The battery uses deep-cycle tubular/flat plates with an enhanced paste formula. The positive and negative plates resist corrosion and tolerate frequent deep discharge. The valve-regulated sealed design makes it maintenance-free. It offers excellent low-temperature performance and charge retention: capacity at -20℃ is no less than 0.70 times the rated capacity, and capacity at 45℃ is no less than 1.05 times, ensuring long-term stable use in outdoor and heavy-duty applications such as sightseeing cars and forklifts.

Electric sightseeing cars / scenic area vehicles: provides smooth and lasting power for passenger transport and climbing needs.

Golf carts: compact size and maintenance-free, ideal for frequent use on the course.

Electric forklifts / AGVs: excellent high-rate discharge performance for in-plant logistics and handling operations.

Low-speed electric vehicles: an economical and reliable power source for township commuting.

Long deep-cycle life: cycle durability of no less than 400 cycles (GB/T 32620.1-2016), tolerant of frequent deep discharge.

Excellent low-temperature performance: capacity at -20℃ is no less than 0.70Cₙ, usable in cold regions.

High-rate discharge: peak power ≥5×U×Cₙ, confidently handles start-stop and high-current conditions.

Maintenance-free: valve-regulated sealed design, no leakage risk, low maintenance cost.

Charging management: cycle (equalizing) charging voltage of 2.40~2.45V per cell (approx. 14.4~14.7V for a 12V battery, 7.2~7.35V for a 6V battery, 9.6~9.8V for an 8V battery); discharge cut-off voltage 1.75V per cell (3-hour rate). Use a smart charger that meets the specification and avoid overcharging or undercharging.

Routine checks: Inspect the battery appearance, terminals and connecting cables regularly, keep the surface clean, and address any swelling, leakage or loose terminals promptly.

Operating environment: Avoid prolonged operation in direct high-temperature sunlight or low-temperature conditions, ensure proper ventilation and heat dissipation, and avoid overloading to extend service life.

Electric sightseeing cars / scenic area vehicles: provides smooth and lasting power for passenger transport and climbing needs.

What about cycle life and low-temperature performance? Cycle durability is no less than 400 cycles (GB/T 32620.1-2016); capacity at -20℃ is no less than 0.70Cₙ, usable in cold regions.

What are the charging parameters? Cycle (equalizing) charging voltage 2.40~2.45V per cell; discharge cut-off voltage 1.75V per cell (3-hour rate).

Is it maintenance-free? Yes. The valve-regulated sealed structure makes it maintenance-free with no leakage risk.

As the electric sightseeing, logistics handling and low-speed mobility markets keep growing, the demand for deep-cycle, long-life power batteries remains steady. The 6-EVF-120, with reliable deep-cycle performance and wide-temperature adaptability, is a trustworthy power choice for scenic areas, factories and logistics sites.

CHISEN Battery is a renowned battery brand and advanced energy storage solution provider. Founded in 2002, CHISEN delivers energy storage solutions to more than 60 countries and regions worldwide. Focused on safety and long service life, CHISEN has earned long-term customer trust with reliable quality.

【Cooperation & Inquiry】For the full datasheet, technical parameters, performance test reports or selection solutions, please contact the CHISEN Battery Business Department. 📱 Phone/WhatsApp: +86 131 6622 6999; 📧 sales@chisen.cn or chisenbattery@gmail.com