1. Temperature control. Any object has its own proper temperature, not too high or too low, so we must control the temperature.
2. Be alert to rainwater. The outer packaging of the battery must be tight enough to guard against the rain.
3, The control of the charging point, this necessary skills to achieve. The number of times the battery is charged and discharged is limited, and we only need to ignore the number of times the charge and discharge are eliminated.
4, The stability of discharge charging. In the process of charging and discharging, there is no sign that the voltage is too high or too low.