The driving range of electric forklifts is jointly affected by multiple factors such as battery performance, operating conditions, operating habits, and environmental conditions. To extend the battery life, we need to start from optimizing usage methods and improving maintenance management. The specific contents are as follows:

1. Core Factors Affecting the Driving Range of Electric Forklifts

Battery Performance

Battery type and capacity: Lithium batteries have higher energy density than lead-acid batteries, with larger capacity and longer range under the same volume. The rated battery capacity (unit: Ah) directly determines the basic range—the larger the capacity, the higher the range potential.

Battery health status: Lead-acid batteries will suffer from plate sulfation and electrolyte loss in the later stage of use, while lithium batteries will experience capacity attenuation after long-term use. The actual range of aging batteries will be 30%–50% lower than that of new batteries.

Battery Management System (BMS): A high-quality BMS can accurately control charging and discharging currents to avoid over-discharging and invalid energy consumption, while a low-quality BMS may cause power waste and shorten the range.

Operating Conditions and Load Conditions

Load weight: The power consumption of the motor and hydraulic system under full-load operation is 2–3 times that under no-load operation. Continuous heavy-load operation will consume power significantly, reducing the driving range by about 40%.

Operating frequency and intensity: High-frequency start-stop and frequent lifting of the forks will increase instantaneous power consumption; long-term continuous operation consumes power faster than intermittent operation.

Driving and operating road conditions: When driving on ramps and uneven ground, the motor needs to output more power to overcome resistance, resulting in a significant drop in range; flat and hardened ground can reduce energy consumption.

Operating and Usage Habits

Driving speed: High-speed driving consumes much more power than medium and low-speed driving, and continuous full-speed operation will shorten the range by 20%–30%.

Energy recovery and utilization: Some electric forklifts are equipped with braking energy recovery function, which can recover part of the power during frequent braking, otherwise there will be no such gain.

Standby energy consumption: If the power is not turned off for a long time during operation intervals, the on-board control system, display screen, etc. will consume power continuously, with the cumulative consumption reaching 5%–10% of the total power.

2. Practical Methods to Extend the Battery Life of Electric Forklifts

Optimize Battery Management and Maintenance

Regular battery maintenance: For lead-acid batteries, replenish distilled water in a timely manner and clean the oxide on the poles; for lithium batteries, regularly check the operating status of the BMS to avoid overcharging and over-discharging.

Select high-energy-density batteries: If conditions permit, upgrade lead-acid batteries to lithium batteries, or replace them with high-capacity battery packs of the same type.

Standardize the charging process: Avoid charging lead-acid batteries before they are fully discharged to reduce the memory effect; adopt the charge-as-you-go mode for lithium batteries and keep the power within the range of 20%–80%, which can extend battery life while ensuring range stability.

Improve Operating and Handling Methods

Reasonably plan the operation route: Reduce invalid driving, prioritize flat routes, avoid frequent climbing and sharp turns, and reduce motor load.

Control driving speed: Maintain medium and low speeds during operation, avoid sudden acceleration and sudden braking, and make full use of the braking energy recovery function.

Reduce standby energy consumption: When the operation interval exceeds 10 minutes, turn off the forklift power in a timely manner or switch to the energy-saving standby mode.

Adapt to the Environment and Auxiliary Measures

Low-temperature environment protection: During winter operation, the battery can be preheated indoors in advance, or the forklift can be equipped with a battery insulation device to reduce range attenuation at low temperatures.

Configure spare battery packs: In high-intensity operation scenarios, prepare spare batteries and replace them quickly when the power is exhausted to ensure continuous operation, which indirectly improves the overall range capacity.