1. to charge too much money for something
2. to put too much electrical charge into a battery or device

1. an excessive charge or fee

Examples

• The mechanic overcharged me for the simple repair.
• Don’t overcharge your phone battery as it can damage it.
• The restaurant’s overcharge for drinks was outrageous.
• She felt the lawyer had overcharged for basic services.
• If you overcharge the device, it may overheat.
• The customer complained about the overcharge on his bill.