ADJ (电池或电器)可充电的 Rechargeable batteries can be recharged and used again. Some electrical products are described as rechargeable when they contain rechargeable batteries.
...a rechargeable battery. 充电电池
...a rechargeable drill. 充电钻孔机
Rechargeable is also a noun.
It is more expensive to run a personal stereo on disposable batteries than on rechargeables. 随身听使用一次性电池比用充电电池更贵。