· The following methods can be employed to assess the battery capacity of Dehua lithium battery tea-picking machines:

**Charge-Discharge Testing Method**

- **Charging Process:** Begin by fully charging the battery of the Dehua lithium battery tea-picking machine. During this process, record relevant information such as charging time and current displayed on the charger (if applicable). Typically, as the battery approaches full charge, the charging current will gradually decrease until it nears zero. If you observe that the charging time is significantly longer than usual or if there are abnormalities in the charging current, this may indicate a reduction in battery capacity or potential issues with the battery itself.

- **Discharging Process:** Once fully charged, connect a load that simulates the power requirements of the tea-picking machine's motor (this could be a similar motor or other equivalent loads) for discharging purposes. Throughout this discharge phase, utilize an ammeter and voltmeter to monitor real-time output current and voltage from the battery while recording discharge duration. Calculate actual battery capacity using the formula: "Battery Capacity (Ah) = Discharge Current (A) × Discharge Time (h)." For example, if discharging at 5A over 2 hours results in a calculated capacity of 10Ah (5 × 2 = 10). Compare this actual value against nominal specifications; significant discrepancies suggest diminished capacity necessitating replacement.

**Internal Resistance Testing Method**

- **Measuring Internal Resistance:** Employ a professional internal resistance tester to evaluate your battery’s internal resistance. First, ensure that it is fully charged before connecting positive and negative clips from your tester to their respective terminals on your battery; then read off displayed values directly from your device. Generally speaking, new lithium batteries exhibit low internal resistance levels—if measurements show substantially higher values compared to those found in new units ,it indicates performance degradation which may also impact overall capacity .An increase in internal resistance leads directly towards greater energy loss during both charge/discharge cycles thereby affecting usable output capacities/times .

**Professional Tester Method:** Acquire specialized equipment designed specifically for testing lithium batteries’ capacities .These testers typically offer enhanced precision along with multiple functionalities allowing them automatically conduct comprehensive charge/discharge tests whilst displaying parameters like voltage,current,and remaining capacities instantaneously .Simply connect Dehua’s tea picking machine’s corresponding batteries into these devices following provided operational guidelines ensures accurate assessments without hassle .

**Software Estimation or Battery Management System Detection** *(applicable only when features exist)*

- **Software Estimation:** Certain models within Dehua's range might come equipped with integrated management systems/mobile applications capable providing insights regarding remaining power levels,cumulative charges undertaken,and total usage duration. Although not offering direct measurement capabilities,this method serves well enough as reference point aiding users grasp general state-of-battery health should any inconsistencies arise concerning reported figures indicating possible underlying problems requiring attention.

- **Battery Management System Data Reading:** Should said system possess data reading functions,it allows connection via computer/other devices enabling retrieval recorded metrics pertaining each cycle including power consumption patterns across various stages.By analyzing trends observed through these datasets one can ascertain whether replacements become necessary based upon historical performance evaluations