Lightweight two-wheel electric vehicles for leisure travel have become popular tools for urban short-distance commuting, community transportation and suburban travel due to their lightweight body, simple operation and flexible passage. The vehicle’s power output, acceleration performance and cruising stability completely depend on the power adaptation capability of the built-in energy storage cells. Power charge and discharge is the core factor affecting the service life, riding experience and use safety of mobility lithium batteries. Many vehicle faults such as weak acceleration, sudden cruising range drop, battery bulging and frequent power failure are not caused by cell quality problems, but performance attenuation resulting from long-term improper power matching and non-standard charge and discharge operations. An in-depth understanding of the dynamic operation logic of power charge and discharge and mastering standardized operation methods can effectively avoid equipment faults and extend the service cycle of energy storage components.

　　The core of power charge and discharge lies in the dynamic process of electric energy input and output of cells within the rated power range. Different power parameters correspond to different working states and loss degrees. The lithium battery devices equipped in mainstream mobility vehicles on the market generally adopt standard voltage specifications with fixed threshold values for maximum charging and discharging power. The battery management system monitors real-time current, voltage and power data to avoid overload operation. Under standard working conditions, constant low-power charge and discharge enables stable and uniform internal chemical reactions and ion migration of cells with almost no additional loss, making it the most suitable working mode for daily travel. In contrast, instantaneous high-power start and stop, continuous high-load discharge and over-standard fast charging will break the cell working balance and accelerate internal aging.

　　Abnormal discharge power is the main cause of premature attenuation of lithium batteries. In daily riding, frequent rapid acceleration, high-speed driving and heavy-load climbing will make the device exceed the rated discharge power instantly, forcing cells to output high-intensity current, resulting in sudden rise of internal temperature and disordered ion movement. Long-term high-frequency overload discharge will cause unbalanced voltage difference of single cells and accelerated electrolyte consumption, directly leading to reduced cruising range and power attenuation. The core reason why many users find the cruising range drops significantly after half a year of use is the long-term high-power discharge that overdraws cell performance. In addition, the low-power discharge mode of low-speed stable riding and constant-speed output can minimize cell loss and maintain the full capacity state of the battery for a long time.

　　Non-standard charging power also seriously damages the core performance of lithium batteries. To save time, many users privately replace with high-current fast charging equipment or use mismatched universal chargers, resulting in excessive charging power. Over-standard fast charging causes cells to continuously receive high-voltage and high-current input in a short period, leading to continuous rise of internal temperature, which not only damages the chemical stability of cells and causes permanent capacity attenuation, but also increases risks such as bulging, overheating and potential safety hazards. Standard charging must follow the low-power constant current and constant voltage mode, with stable energy supplement in the early stage and low-voltage floating charge calibration in the later stage, which fully fits the charging characteristics of lithium batteries, ensuring charging efficiency and comprehensively protecting the cell structure.

　　Ambient temperature directly changes the adaptation threshold of power charge and discharge, which is an easily overlooked maintenance detail. In high-temperature environments, cell activity is greatly improved. If standard power charge and discharge is maintained, power overload and heat accumulation are likely to occur, accelerating component aging. In low-temperature environments, cell activity decreases significantly and internal ion migration is blocked. Forcing high-power discharge will damage the internal cell structure, while high-power charging will cause lithium precipitation and permanent battery damage. Therefore, in hot sun exposure and severe frost and cold weather, users should reduce riding loads, avoid high-power output such as rapid acceleration, and charge the battery at room temperature to avoid power adaptation risks caused by temperature changes.

　　Combined with the usage scenarios of mobility vehicles, the standardized power charge and discharge operation and maintenance scheme can effectively protect lithium battery devices for a long time. In daily riding, prioritize constant-speed driving, reduce high-power discharge operations such as rapid acceleration and heavy-load climbing, and keep cells in a stable output state. Use original matching equipment for charging, adhere to standard low-power slow charging, avoid all over-standard fast charging, and cut off the power in time after full charging to prevent power overload loss caused by long-term floating charging. During long-term idle storage, keep medium battery level, and conduct a regular power charge and discharge cycle every month to activate cell activity, balance the voltage difference of single cells, and prevent performance attenuation caused by standing idle.

　　Meanwhile, actively avoid abnormal power working conditions relying on the intelligent protection function of the battery management system. The system can real-time monitor power, current and temperature data during charge and discharge, and automatically limit current for protection in case of overload, over-temperature, over-voltage and other abnormalities. If users find sudden power drop, abnormal body heating, sudden charging speed change and other problems during use, stop using the equipment immediately and troubleshoot power adaptation faults to avoid continuous cell damage. Scientifically controlling power charge and discharge working conditions and standardizing daily riding and charging habits are the optimal ways to extend the service life of mobility lithium batteries, ensure riding safety and maintain stable cruising range.