If a smart card (= a plastic card that is used to make payments) is reloadable, you can add more money to the amount that is stored on it.

The company issued reloadable smart cards to all of its customers.

Some re-loadable debit cards put a limit on how much money you can charge to the card each day. 一些可重新充值的借记卡限制了您每天可以从卡中收取的金额。

If a camera is reloadable, you can take out the film that has been used and put new film into it; if a weapon or the bullets, etc. it uses is reloadable, the bullets can be used again after the weapon is fired.

It is rare to see a reloadable film camera these days. 现在很少看到可重新装载胶卷的相机了。

The army had several reloadable rocket launchers.

This pistol uses reloadable ammunition.