However, a new method could lead to portable desalination devices simple enough to run off solar power or a battery, but powerful enough to supply a family, or even a small village, with clean water.
The paper puts forward a new method to measure series battery voltage, mechanical relay is replaced by photoelectric relay to select each battery voltage.
提出一种串联电池组电压测量新方法：光电继电器取代机械继电器选通各节电池电压；
3
This method is only a single function of radiation, no effect on the battery.