But the supercapacitor and chemical battery are not necessarily in competition.
但是，超级电容器和化学电池并不一定竞争。
It is different from a battery, which produces electricity from a chemical reaction.
这与化学电池是不一样的。
When a battery is connected to a load, a chemical reaction begins.
当把电池接到一个负载上，化学反应就开始了。
When a battery is connected to a load, a chemical reaction begins.
当把电池接到一个负载上，化学反应就开始了。
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