你可以在夜里给电池充电。

You can recharge the battery overnight.

每个电池都放在相互分开的格子中

[as determiner]each battery is in a separate compartment

电池取走后，根本无法驱动。

With the battery removed it was incapable of being driven at all.

电池电源。

[as modifier]battery power.

电池的电用完了。

The battery has run down.