battery coking

例句：

1. 1.The old battery is starting to coke, which means it's time to replace it.
   旧电池开始老化了，意思是该更换了。
2. 2. The battery in the car has started to coke, so we need to take it to the mechanic for a check-up.
   汽车的电池开始老化了，所以我们需要把它送到修车厂去检查。
3. 3. As batteries age, they become less efficient and can even start to coke, which can lead to reduced performance.
   随着电池老化，它们会变得效率降低，甚至开始老化，这会导致性能下降。