As you already know batteries come in different shapes and sizes. (Wait, you don't know? Go back and read the Household Batteries ShopWiki guide.) Appliances that accept standard batteries will always accept rechargeable ones too, so just check what type of batteries your appliance needs and get to shopping:
* Rechargeable 9 V Batteries
* Rechargeable D Batteries
* Rechargeable C Batteries
* Rechargeable AA Batteries
* Rechargeable AAA Batteries
You may have noticed that I neglected to mention rechargeable coin and button cell batteries. That's because those are scarce and generally suffer from poor performance. If a much bigger rechargeable AA battery discharges when not in use, imagine how quickly a button cell will completely drain itself when not in use. Still, chargers are sold.