After a capacitor is disconnected from a discharge circuit, a residual charge remains on the capacitor, so a voltage is re-established across the capacitor terminals.
电容器从放电电路断开以后，电容器中保持剩余的电荷，从而在电容器的端子之间重新建立起电压。
2
Open circuit voltage to determine the residual capacity of battery, and then adopt different methods to supplement the Germany sunshine battery charging.
开路电压判断电池的剩余容量，然后采用不同的方法对德国阳光蓄电池进行补充充电。
3
With residual voltage automatic release circuit to guarantee the safety.